{"id":396,"date":"2026-07-31T03:13:54","date_gmt":"2026-07-31T09:13:54","guid":{"rendered":"https:\/\/lgcmm.izt.uam.mx\/?page_id=396"},"modified":"2026-10-07T02:12:26","modified_gmt":"2026-10-07T08:12:26","slug":"experimental-physics","status":"publish","type":"page","link":"https:\/\/lgcmm.izt.uam.mx\/?page_id=396","title":{"rendered":"Experimental Physics"},"content":{"rendered":"\n<div class=\"lgm-hero\">\n    <div class=\"lgm-overlay\"><\/div>\n\n    <div class=\"lgm-content\">\n\n        <span class=\"lgm-subtitle\">\n            symposium on\n        <\/span>\n\n        <h1 class=\"lgm-title\">\n            Experimental Physics\n        <\/h1>\n\n        <div class=\"lgm-divider\"><\/div>\n\n\n    <\/div>\n<\/div>\n\n<style>\n\n.lgm-hero{\n    background:#69725E; \/* Dusty Olive *\/\n    color:white;\n    padding:120px 30px;\n    text-align:center;\n    position:relative;\n    overflow:hidden;\n}\n\n.lgm-overlay{\n    position:absolute;\n    inset:0;\n    background:\n    radial-gradient(circle at top right,\n    rgba(215,133,33,.12),\n    transparent 45%);\n}\n\n.lgm-content{\n    position:relative;\n    z-index:2;\n    max-width:900px;\n    margin:auto;\n}\n\n.lgm-subtitle{\n    display:block;\n    letter-spacing:4px;\n    text-transform:uppercase;\n    color:#D78521;\n    font-size:.95rem;\n    margin-bottom:18px;\n    opacity:0;\n    animation:fadeUp 1s .3s forwards;\n}\n\n.lgm-title{\n\n    font-family:\"Times New Roman\", Times, serif;\n    font-size:clamp(2.8rem,6vw,5.5rem);\n    font-weight:500;\n    line-height:1.1;\n    margin:0;\n\n    color:#E6E4CD;\n\n    opacity:0;\n    transform:translateY(30px);\n    animation:fadeUp 1s .6s forwards;\n\n}\n\n.lgm-divider{\n\n    width:180px;\n    height:2px;\n\n    margin:30px auto;\n\n    background:linear-gradient(\n        90deg,\n        transparent,\n        #D78521,\n        transparent\n    );\n\n    opacity:0;\n\n    animation:fadeUp 1s forwards;\n    animation-delay:1s;\n\n}\n\n.lgm-description{\n\n    max-width:700px;\n    margin:auto;\n    color:#E6E4CD;\n    font-size:1.1rem;\n    line-height:1.8;\n\n    opacity:0;\n    animation:fadeUp 1s 1.6s forwards;\n\n}\n\n@keyframes fadeUp{\n\n    from{\n        opacity:0;\n        transform:translateY(35px);\n    }\n\n    to{\n        opacity:1;\n        transform:translateY(0);\n    }\n\n}\n\n@keyframes expandLine{\n\n    from{\n        width:0;\n    }\n\n    to{\n        width:180px;\n    }\n\n}\n\n.lgm-hero::before{\n\n    content:\"\";\n    position:absolute;\n    width:650px;\n    height:650px;\n    border:1px solid rgba(230,228,205,.08);\n    border-radius:50%;\n    left:-250px;\n    top:-220px;\n\n}\n\n.lgm-hero::after{\n\n    content:\"\";\n    position:absolute;\n    width:500px;\n    height:500px;\n    border:1px solid rgba(230,228,205,.05);\n    border-radius:50%;\n    right:-180px;\n    bottom:-180px;\n\n}\n\n<\/style>\n\n\n\n<div style=\"margin-top:var(--wp--preset--spacing--20);margin-bottom:var(--wp--preset--spacing--20);height:38px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<section class=\"superplenary\">\n\n    <div class=\"superplenary-container\">\n\n        <div class=\"lgm-divider\"><\/div>\n\n\n<style>\n\n.lgm-divider{\n\n    width:180px;\n    height:2px;\n\n    background:linear-gradient(\n        90deg,\n        transparent,\n        #D78521,\n        transparent\n    );\n\n    margin:35px auto;\n\n}\n\n<\/style>\n\n        <span class=\"super-label\">Superplenary<\/span>\n\n        <h2>\n            Telechelic polymers for sustainable polyolefins\n        <\/h2>\n\n        <div class=\"super-content\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/07\/Marc-Hillmyer.png\" alt=\"Speaker\">\n\n            <div class=\"super-info\">\n\n                <h3>\n                    Marc A. Hillmyer\n                <\/h3>\n\n                <p class=\"institution\">\n                    Department of Chemistry, University of Minnesota. \n                <\/p>\n\n                <p>\n                   Polyolefins are ubiquitous. They are lightweight, strong, and stable. These features render them useful in countless applications. Unfortunately, these attributes also contribute to the accumulation of persistent plastic waste in the environment. While polyolefins can be mechanically recycled, often this results in an inferior product and is in part the reason that only a small percentage of polyolefin products are effectively recycled. We have embarked on an effort to prepare polyolefins with functional groups at their chain ends. These telechelic polyolefins can be stitched together to form high molar mass plastics and thermosets. By virtue of the synthetic pathway used to make these materials, we generate products that include weak links along the backbones of the polymer chains. These links can be chemically cleaved to quantitatively deconstruct the material and allow for efficient chemical recycling back to the starting telechelic polymers that can be subsequently repolymerized. Our approach takes advantage of a tandem catalysis strategy that is perfectly atom economic and readily scalable. In this lecture I will discuss the preparation of the telechelic polyolefins and their use in the preparation of degradable polyolefin-based plastics and thermosets. I will also report on their materials properties, scalability, and recyclability.\n                <\/p>\n\n            <\/div>\n\n        <\/div>\n\n    <\/div>\n\n<\/section>\n\n\n\n<style>\n\n.superplenary{\n\n    background:#550527;\n\n    padding:100px 20px;\n\n    color:#F8F7F2;\n\n    overflow:hidden;\n\n}\n\n\n.superplenary-container{\n\n    max-width:1100px;\n\n    margin:auto;\n\n    text-align:center;\n\n}\n\n\n\/* L\u00ednea dorada *\/\n\n.super-line{\n\n    width:120px;\n\n    height:2px;\n\n    background:#D78521;\n\n    margin:0 auto 35px;\n\n}\n\n\n\/* Etiqueta *\/\n\n.super-label{\n\n    font-family:\"Times New Roman\", serif;\n\n    letter-spacing:.4em;\n\n    text-transform:uppercase;\n\n    font-size:.8rem;\n\n    color:#E6E4CD;\n\n}\n\n\n\/* T\u00edtulo *\/\n\n.superplenary h2{\n    font-family:\"Times New Roman\", serif;\n    font-weight:400;\n    font-size:3rem;\n    margin:25px 0 60px;\n    letter-spacing:.03em;\n    color:#F8F7F2 !important;   \n}\n\n\n\/* Contenido *\/\n\n.super-content{\n\n    display:flex;\n\n    align-items:center;\n\n    justify-content:center;\n\n    gap:60px;\n\n    text-align:left;\n\n}\n\n\n\/* Foto *\/\n\n.super-content img{\n\n    width:280px;\n\n    height:280px;\n\n    object-fit:cover;\n\n    border-radius:50%;\n\n    border:3px solid rgba(215,133,33,.8);\n\n}\n\n\n\n\/* Informaci\u00f3n *\/\n\n.super-info{\n\n    max-width:450px;\n\n}\n\n\n.super-info h3{\n\n    font-family:\"Times New Roman\", serif;\n\n    font-size:2rem;\n\n    font-weight:400;\n\n    margin-bottom:10px;\n\n    color:#F8F7F2 !important;\n\n}\n\n\n.institution{\n\n    color:#D78521;\n\n    letter-spacing:.15em;\n\n    text-transform:uppercase;\n\n    font-size:.85rem;\n\n}\n\n\n.super-info p{\n\n    color:#E6E4CD;\n\n    line-height:1.7;\n\n}\n\n\n\n\/* Animaci\u00f3n scroll *\/\n\n.superplenary{\n\n    opacity:0;\n\n    transform:translateY(50px);\n\n    transition:1s ease;\n\n}\n\n\n.superplenary.show{\n\n    opacity:1;\n\n    transform:translateY(0);\n\n}\n\n\n\n@media(max-width:800px){\n\n    .super-content{\n\n        flex-direction:column;\n\n        text-align:center;\n\n    }\n\n\n    .superplenary h2{\n\n        font-size:2rem;\n\n    }\n\n}\n\n<\/style>\n\n\n\n<script>\n\ndocument.addEventListener(\"DOMContentLoaded\",()=>{\n\n\nconst section=document.querySelector(\".superplenary\");\n\n\nconst observer=new IntersectionObserver(entries=>{\n\n\nentries.forEach(entry=>{\n\n\nif(entry.isIntersecting){\n\nsection.classList.add(\"show\");\n\n}else{\n\nsection.classList.remove(\"show\");\n\n}\n\n\n});\n\n\n},{threshold:.2});\n\n\nobserver.observe(section);\n\n\n});\n\n<\/script>\n\n\n\n<script data-wp-block-html=\"js\">\n<script>\n\nconst observer = new IntersectionObserver((entries)=>{\n\nentries.forEach(entry=>{\n\nif(entry.isIntersecting){\n\nentry.target.classList.add(\"show\");\n\n}\n\n});\n\n},{threshold:.15});\n\ndocument.querySelectorAll(\".speaker-card\").forEach((card,index)=>{\n\ncard.style.transitionDelay=(index*0.08)+\"s\";\n\nobserver.observe(card);\n\n});\n\nobserver.observe(document.querySelector(\".section-title\"));\n<\/script>\n\n<section class=\"speakers-section\">\n\n<h2 class=\"section-title\">Plenary Speakers<\/h2>\n\n<div class=\"speaker-grid\">\n\n<\/div><\/section>\n\n<div class=\"contributions-banner\">\n    <span>Contributions<\/span>\n<\/div>\n\n<!-- ===================================================== -->\n<!-- CONTRIBUTORS -->\n<!-- Todas las tarjetas de contributors van dentro de este grid -->\n<!-- ===================================================== -->\n\n<section class=\"speakers-section contributions-section\">\n\n    <div class=\"speaker-grid\">\n\n<!-- CONTRIBUTOR 1 -->\n        <div class=\"speaker-card\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/04\/People.png\" class=\"speaker-photo\" alt=\"Contributor name\">\n\n            <h3>Rodrigo S\u00e1nchez Garc\u00eda<\/h3>\n\n            <p class=\"institution\">\n                Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\n            <\/p>\n\n            <h4 class=\"talk-title\">\n                Applying microrheological approaches to granular media \n            <\/h4>\n\n            <button class=\"view-details-btn\" type=\"button\" data-name=\"Rodrigo S\u00e1nchez Garc\u00eda\" data-institution=\"Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\" data-talk=\"Applying microrheological approaches to granular media\" data-photo=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/04\/People.png\" data-abstract=\"Microrheology is a rich and active field of microscopic soft matter research. Extending its insights to suitable granular systems requires modifying the frameworks used for colloidal systems in addition to different experimental approaches. Novel techniques are presented as well as results from granular submonolayers at interfaces.\" data-bio=\"More about this speaker soon\">\n                View Details\n            <\/button>\n\n        <\/div>\n\n<!-- CONTRIBUTOR 2 -->\n        <div class=\"speaker-card\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Anna-Kozina.jpg\" class=\"speaker-photo\" alt=\"Contributor name\">\n\n            <h3>Anna Kozina<\/h3>\n\n            <p class=\"institution\">\n                Institute of Chemistry, Universidad Nacional Aut\u00f3noma de M\u00e9xico\n            <\/p>\n\n            <h4 class=\"talk-title\">\n                Assembly of bullet-shaped colloids at an air\/water interface \n            <\/h4>\n\n            <button class=\"view-details-btn\" type=\"button\" data-name=\"Anna Kozina\" data-institution=\"Institute of Chemistry, Universidad Nacional Aut\u00f3noma de M\u00e9xico\" data-talk=\"Assembly of bullet-shaped colloids at an air\/water interface\" data-photo=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Anna-Kozina.jpg\" data-abstract=\"The shape anisotropy of colloids controls particle interactions at fluid interfaces and, consequently, colloidal assembly. The preferred orientation of rod-shaped particles at flat interfaces depends on the specific particle shape, aspect ratio, and contact angles. We have studied anisotropic bullet-shaped colloids at an air\/water interface using optical microscopy. We found that the asymmetric deformation of the interface around the microbullets leads to strong capillary attraction. This attraction is orientation-dependent and results in preferential lateral interactions between particles. A series of laterally aligned microbullets forms smectic-like domains, which subsequently attract one another, resulting in the development of a rigid, gel-like monolayer. The structure of this monolayer strongly resembles smectic-like order at short length scales, whereas at larger distances it exhibits disorder attributed to different domain orientations.\" data-bio=\"More about this speaker soon\">\n                View Details\n            <\/button>\n\n        <\/div>\n\n<!-- CONTRIBUTOR 3 -->\n        <div class=\"speaker-card\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Pedro-Diaz.jpg.webp\" class=\"speaker-photo\" alt=\"Contributor name\">\n\n            <h3> Pedro D\u00edaz-Leyva <\/h3>\n\n            <p class=\"institution\">\n                Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\n            <\/p>\n\n            <h4 class=\"talk-title\">\n                What can a minimal Yukawa model say about rhombic\u2013triangular coexistence in gravity-confined charged colloids?\n            <\/h4>\n\n            <button class=\"view-details-btn\" type=\"button\" data-name=\"Pedro D\u00edaz-Leyva\" data-institution=\"Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\" data-talk=\"What can a minimal Yukawa model say about rhombic\u2013triangular coexistence in gravity-confined charged colloids?\" data-photo=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Pedro-Diaz.jpg.webp\" data-abstract=\"Charged colloids sedimenting against a single wall form quasi-two-dimensional layers whose structure depends on the gravitational P\u00e9clet number (Pe) and the screening parameter (\u03ba\u03c3). Recent light-microscopy experiments on nine such samples reported triangular order, disordered fluid layers and, for intermediate parameters, a coexistence of triangular and rhombic domains, identified by order parameters of the wall-adjacent layers [1]. We ask whether a minimal model reproduces this classification. We performed AI assisted [2] Monte Carlo simulations of polydisperse Yukawa spheres under gravity next to a charged wall, using the experimental values of Pe and \u03ba\u03c3 of each sample. To avoid biasing the in-plane crystal geometry, we implemented a lateral cell whose aspect ratio and shear angle fluctuate at fixed area, and compared it with rectangular boxes commensurate with a triangular lattice. Conventional bond-orientational parameters (\u03c86, \u03c84, g6(r), g4(r)) computed in the wall layer of fixed-box simulations do not separate the samples classified as rhombic\u2013triangular from the triangular ones. In the theory of confined Yukawa systems, however, rhombic order is a stacking property, so we introduced an interlayer registry measure, validated against the exact T = 0 lattice geometry. With it, one of the three rhombic\u2013triangular samples shows a registry anomaly, beyond the trend with Pe set by the triangular samples, that survives the variable box. The anomaly observed in the other two with a fixed box disappears when the box is free to change shape. We discuss what this implies for the classification and the limitations of this preliminary analysis.\n\n[1] S. L\u00f3pez-Godoy and A. Kozina, J. Chem. Phys. 165, 024901 (2026).\n[2] Anthropic, Claude Sonnet 5 (large language model), https:\/\/www.anthropic.com\/claude (2026).\n\" data-bio=\"More about this speaker soon\">\n                View Details\n            <\/button>\n\n        <\/div>\n\n<!-- CONTRIBUTOR 4 -->\n        <div class=\"speaker-card\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/04\/People.png\" class=\"speaker-photo\" alt=\"Contributor name\">\n\n            <h3> Evelyn F. Huerta <\/h3>\n\n            <p class=\"institution\">\n                Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\n            <\/p>\n\n            <h4 class=\"talk-title\">\n                Photonic applications of sodium-zinc phosphate glasses activated Dy\u00b3\u207a\/Tb\u00b3\u207a and Dy\u00b3\u207a\/Tb\u00b3\u207a\/Eu\u00b3\u207a\n            <\/h4>\n\n            <button class=\"view-details-btn\" type=\"button\" data-name=\"Evelyn F. Huerta\" data-institution=\"Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\" data-talk=\"Photonic applications of sodium-zinc phosphate glasses activated Dy\u00b3\u207a\/Tb\u00b3\u207a and Dy\u00b3\u207a\/Tb\u00b3\u207a\/Eu\u00b3\u207a\" data-photo=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/04\/People.png\" data-abstract=\"Sodium-zinc-phosphate glasses doped with Dy\u00b3\u207a\/Tb\u00b3\u207a and Dy\u00b3\u207a\/Tb\u00b3\u207a\/Eu\u00b3\u207a ions were synthesized by the melt-quenching method and investigated through photoluminescence and luminescence decay measurements. The Dy\u00b3\u207a\/Tb\u00b3\u207a co-doped glass exhibits yellow-green emission under 349 nm excitation, resulting from efficient non-radiative energy transfer from Dy\u00b3\u207a to Tb\u00b3\u207a. In the tri-doped system, the emission color can be tuned from yellowish-orange to reddish-orange by changing the excitation wavelength. Energy transfer processes from Dy\u00b3\u207a to Tb\u00b3\u207a\/Eu\u00b3\u207a and from Tb\u00b3\u207a to Eu\u00b3\u207a were identified and found to significantly influence the luminescent behavior. These results demonstrate the potential of Dy\u00b3\u207a\/Tb\u00b3\u207a and Dy\u00b3\u207a\/Tb\u00b3\u207a\/Eu\u00b3\u207a activated sodium-zinc-phosphate glasses as tunable photonic materials for lighting and display applications.\" data-bio=\"More about this speaker soon\">\n                View Details\n            <\/button>\n\n        <\/div>\n\n<!-- CONTRIBUTOR 5 -->\n        <div class=\"speaker-card\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Elias-Perez.jpeg\" class=\"speaker-photo\" alt=\"Contributor name\">\n\n            <h3> El\u00edas P\u00e9rez <\/h3>\n\n            <p class=\"institution\">\n                Institute of Physics, Universidad Aut\u00f3noma de San Luis Potos\u00ed \/ Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\n            <\/p>\n\n            <h4 class=\"talk-title\">\n                Wetting of liquids on rough surfaces: An effective surface tension approach\n            <\/h4>\n\n            <button class=\"view-details-btn\" type=\"button\" data-name=\"El\u00edas P\u00e9rez\" data-institution=\"Institute of Physics, Universidad Aut\u00f3noma de San Luis Potos\u00ed \/ Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\" data-talk=\"Wetting of liquids on rough surfaces: An effective surface tension approach\" data-photo=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Elias-Perez.jpeg\" data-abstract=\"The wetting of a liquid on a flat surface is characterized by the angle between the liquid and the surface, Young (1805). However, this equation is not valid for rough and\/or inhomogeneous surfaces. To address this, Wenzel (1936) and Cassie\u2013Baxter (1944) proposed alternative equations that account for roughness and inhomogeneity, respectively. In this talk, we present an approach based on an equation of state among the three surface tensions of wetting, utilizing an effective interfacial tension that implicitly includes information regarding surface roughness, liquid\u2013surface interaction, and surface inhomogeneity. This approximation adequately describes the wettability of liquids on a rough surface and validates the use of effective surface tension.\" data-bio=\"More about this speaker soon\">\n                View Details\n            <\/button>\n\n        <\/div>\n\n<!-- CONTRIBUTOR 6 -->\n        <div class=\"speaker-card\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Jaime-Santoyo.jpg\" class=\"speaker-photo\" alt=\"Contributor name\">\n\n            <h3> Jaime Santoyo Salazar <\/h3>\n\n            <p class=\"institution\">\n                Department of Physics, Centro de Investigaci\u00f3n y de Estudios Avanzados del IPN (Cinvestav)\n            <\/p>\n\n            <h4 class=\"talk-title\">\n                Iron oxide nanoparticles and polyphenols in theranostics development\n            <\/h4>\n\n            <button class=\"view-details-btn\" type=\"button\" data-name=\"Jaime Santoyo Salazar\" data-institution=\"Department of Physics, Centro de Investigaci\u00f3n y de Estudios Avanzados del IPN (Cinvestav)\" data-talk=\"Iron oxide nanoparticles and polyphenols in theranostics development\" data-photo=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Jaime-Santoyo.jpg\" data-abstract=\"Currently, research on superparamagnetic iron oxide nanoparticles (SPIONs) coated with organic materials has generated promising contributions in the field of biomedicine. The magnetic domains targeting from SPIONs &lt; 20 nm have contributed to the formulation and control of nanostructured systems focused on the development of several functions from: (1) targeting and accumulation of SPIONs in biological media; (2) endocytosis through the addition of functional organic coatings with hydroxyl (-OH), amine (-NH2), carboxyl (-COOH) bonds, among other organic chains; and (3) local stimulation by AC magnetic field induction. This has allowed to open new alternatives in the development of possible applications of the theranostics that defines the integration of several functions in nanostructured systems: (1) Heat generation therapy or magnetic hyperthermia; (2) Drug release; and (3) Diagnosis agents for Magnetic Resonance Imaging (MRI). In our laboratory, we have focused on binding organic chains from polyphenols to the surfaces of SPIONs. This allows us to generate SPIONs with Fe-OH and\/or Fe-COOH bonds on the surface. The vision is to take advantage of these configurations in the formulations of theranostics development for cancer treatment and other diseases. Finally, some preliminary results will be presented.\" data-bio=\"More about this speaker soon\">\n                View Details\n            <\/button>\n\n        <\/div>\n\n<!-- CONTRIBUTOR 7 -->\n        <div class=\"speaker-card\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Monica-Ledesma.jpg.webp\" class=\"speaker-photo\" alt=\"Contributor name\">\n\n            <h3> M\u00f3nica Ledesma Motolin\u00eda <\/h3>\n\n            <p class=\"institution\">\n                Department of Chemistry, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\n            <\/p>\n\n            <h4 class=\"talk-title\">\n                Internal structure of thermoresponsive microgels: from synthetic PNIPAM to biocompatible HPC\n            <\/h4>\n\n            <button class=\"view-details-btn\" type=\"button\" data-name=\"M\u00f3nica Ledesma Motolin\u00eda\" data-institution=\"Department of Chemistry, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\" data-talk=\"Internal structure of thermoresponsive microgels: from synthetic PNIPAM to biocompatible HPC\" data-photo=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Monica-Ledesma.jpg.webp\" data-abstract=\"Microgels are colloidal particles formed by cross-linked polymers that respond to stimuli, such as pH, hydrostatic pressure, ionic strength, and\/or temperature. Thermosensitive microgels undergo a volume phase transition in response to a change in temperature defined as the lower critical solution temperature (LCST). One of the most extensively studied thermosensitive polymers is poly(N-isopropylacrylamide) (PNIPAM) because its LCST lies between 32\u201334 \u00b0C, however, its applications are limited by its poor biocompatibility. In contrast, less-explored polymers such as hydroxypropyl cellulose (HPC) represent a novel approach. This session presents advances in the synthesis and internal morphology of thermosensitive pNIPAM and HPC microgels.\" data-bio=\"More about this speaker soon\">\n                View Details\n            <\/button>\n\n        <\/div>\n\n<!-- CONTRIBUTOR 8 -->\n        <div class=\"speaker-card\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Roberto-Olayo.jpeg\" class=\"speaker-photo\" alt=\"Contributor name\">\n\n            <h3> Roberto Olayo-Valles <\/h3>\n\n            <p class=\"institution\">\n                Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\n            <\/p>\n\n            <h4 class=\"talk-title\">\n                PCL\/Magnetite\/PPy composite particles: characterization of their molecular interaction with IgM and their performance as contrast agents\n            <\/h4>\n\n            <button class=\"view-details-btn\" type=\"button\" data-name=\"Roberto Olayo-Valles\" data-institution=\"Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\" data-talk=\"PCL\/Magnetite\/PPy composite particles: characterization of their molecular interaction with IgM and their performance as contrast agents\" data-photo=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Roberto-Olayo.jpeg\" data-abstract=\"The use of 'smart materials' in nanomedicine has enabled the development of systems that respond to external stimuli to treat disease. This talk presents progress designing composite particles with a polycaprolactone (PCL) matrix embedded with magnetic nanoparticles coated with plasma-polymerized pyrrole (PPy), which serve as a platform for drug release triggered by high-frequency fields. Results provide insight into interactions between particles and immunoglobulins, as well as their potential use in medical imaging.\" data-bio=\"More about this speaker soon\">\n                View Details\n            <\/button>\n\n        <\/div>\n\n<!-- CONTRIBUTOR 9 -->\n        <div class=\"speaker-card\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Reyna-Mendez.jpeg\" class=\"speaker-photo\" alt=\"Contributor name\">\n\n            <h3> Reyna M\u00e9ndez Camacho <\/h3>\n\n            <p class=\"institution\">\n                Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\n            <\/p>\n\n            <h4 class=\"talk-title\">\n                From epitaxy to quantum confinement: self-assembly and modeling of semiconductor nanostructures\n            <\/h4>\n\n            <button class=\"view-details-btn\" type=\"button\" data-name=\"Reyna M\u00e9ndez Camacho\" data-institution=\"Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\" data-talk=\"From epitaxy to quantum confinement: self-assembly and modeling of semiconductor nanostructures\" data-photo=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Reyna-Mendez.jpeg\" data-abstract=\"The direct integration of III\u2013V semiconductors with silicon offers an attractive route to combining the optical and electronic properties of both material systems on a single platform. In this context, epitaxial self-assembly provides a bottom-up strategy for producing functional nanostructures without lithographic processing. In particular, high-index Si substrates allow crystallographic orientation to serve as a growth design parameter: during molecular beam epitaxy, the surface spontaneously evolves into faceted configurations and highly anisotropic morphologies, including wire-like and pyramidal structures. This talk will present experimental and modeling results aimed at understanding the mechanisms governing this process and their relationship to the properties of the resulting nanostructures.\n\nThe evolution of these morphologies and their description through different nonlinear models of surface dynamics will be discussed, with an emphasis on the formation of ordered patterns and their transition to more complex, branched structures. At a second modeling scale, the design of one-dimensional nanostructures using effective potentials will be addressed as a predictive tool prior to experimental implementation. This approach enables the analysis of coupling and tunneling between structures, the formation of coherent states and electronic bands, and the modification of these states by external electric fields. In regimes of stronger confinement, the same framework allows the emergence of strongly correlated electronic states in quantum wires to be explored.\n\nOverall, this work connects the control of growth and nanostructure geometry with the confinement phenomena that modulate their electronic properties, through an approach that integrates experiment and modeling across multiple scales.\n\n\" data-bio=\"More about this speaker soon\">\n                View Details\n            <\/button>\n\n        <\/div>\n\n<!-- CONTRIBUTOR 10 -->\n        <div class=\"speaker-card\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Cesar-Guarin.jpeg\" class=\"speaker-photo\" alt=\"Contributor name\">\n\n            <h3> C\u00e9sar A. Guar\u00edn Dur\u00e1n <\/h3>\n\n            <p class=\"institution\">\n                Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\n            <\/p>\n\n            <h4 class=\"talk-title\">\n                Surface-enhanced effects of tailored gold nanomaterials on anthracene and formaldehyde\n            <\/h4>\n\n            <button class=\"view-details-btn\" type=\"button\" data-name=\"C\u00e9sar A. Guar\u00edn Dur\u00e1n\" data-institution=\"Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\" data-talk=\"Surface-enhanced effects of tailored gold nanomaterials on anthracene and formaldehyde\" data-photo=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Cesar-Guarin.jpeg\" data-abstract=\"This study explores the use of nanomaterials as systems capable of modifying the optical properties of molecules placed on their surface [1]. The talk will address the fabrication of gold nanomaterials (Au-NMs) with various morphologies, ranging from isolated nanoparticles to thin films [2]. Characterization using transmission electron microscopy (TEM), profilometry, and UV-Vis spectroscopy revealed that the substrate and the local refractive index are the primary determinants of film continuity and plasmonic resonance frequency. The thicknesses of the Au-NMs were determined to be precisely controlled within the range of 8 \u00b1 4 to 58 \u00b1 8 nm. The research includes the study of the optical response of these Au-NMs via computational electromagnetics simulations (SCUFF-EM) to analyze the near-field electric amplification effect (E\/E\u2080). Using these Au-NMs, the effect on anthracene and formaldehyde, two well-known atmospheric pollutants, was investigated. The results indicate that the field distributions induce an increase in the radiative rate (kr) observed in time-resolved fluorescence measurements, and that the NM is also capable of exerting an electrochemical effect on formaldehyde molecules [3,4]. The study aimed to outline routes for the development of miniaturized analytical architectures utilizing NMs, which is essential for advancing the in situ detection of analytes in accordance with environmental monitoring requirements.\n\n[1] S. Enoch and N. Bonod (Eds.), Plasmonics: From Basics to Advanced Topics, Vol. 167, Springer (2012).\n[2] J. T. Lue, Physical properties of nanomaterials, Encyclopedia of Nanoscience and Nanotechnology 10(1), 1\u201346 (2007).\n[3] L. G. Mendoza-Luna, C. A. Guar\u00edn, E. Haro-Poniatowski and J. L. Hern\u00e1ndez-Pozos, Results in Optics 19, 100803 (2025).\n[4] D. H. Werner, S. D. Campbell and L. Kang, Nanoantennas and Plasmonics: Modelling, Design and Fabrication, IET (2020).\n\" data-bio=\"More about this speaker soon\">\n                View Details\n            <\/button>\n\n        <\/div>\n\n<!-- CONTRIBUTOR 11 -->\n        <div class=\"speaker-card\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/04\/People.png\" class=\"speaker-photo\" alt=\"Contributor name\">\n\n            <h3> Juan Ortiz <\/h3>\n\n            <p class=\"institution\">\n                 LANIREM, Juriquilla, Universidad Nacional Aut\u00f3noma de M\u00e9xico\n            <\/p>\n\n            <h4 class=\"talk-title\">\n                Physical concepts in magnetic resonance imaging techniques\n            <\/h4>\n\n            <button class=\"view-details-btn\" type=\"button\" data-name=\"Juan Ortiz\" data-institution=\" LANIREM, Juriquilla, Universidad Nacional Aut\u00f3noma de M\u00e9xico\" data-talk=\"Physical concepts in magnetic resonance imaging techniques\" data-photo=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/04\/People.png\" data-abstract=\"More about this speaker soon\" data-bio=\"More about this speaker soon\">\n                View Details\n            <\/button>\n\n        <\/div>\n\n<!-- CONTRIBUTOR 12 -->\n        <div class=\"speaker-card\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Alessio-Franci.jpg\" class=\"speaker-photo\" alt=\"Contributor name\">\n\n            <h3> Alessio Franci <\/h3>\n\n            <p class=\"institution\">\n                 Department of Electrical Engineering and Computer Science (Montefiore Institute), University of Li\u00e8ge\n            <\/p>\n\n            <h4 class=\"talk-title\">\n                New technologies and practices for pPPy functionalization of HD-MEA chips and pPPy-based modulation of large neural circuit activity\n            <\/h4>\n\n            <button class=\"view-details-btn\" type=\"button\" data-name=\"Alessio Franci\" data-institution=\" Department of Electrical Engineering and Computer Science (Montefiore Institute), University of Li\u00e8ge\" data-talk=\"New technologies and practices for pPPy functionalization of HD-MEA chips and pPPy-based modulation of large neural circuit activity\" data-photo=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Alessio-Franci.jpg\" data-abstract=\"More about this speaker soon\" data-bio=\"More about this speaker soon\">\n                View Details\n            <\/button>\n\n        <\/div>\n\n<!-- CONTRIBUTOR 13 -->\n        <div class=\"speaker-card\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Screenshot-2026-10-03-at-18.48.33.png\" class=\"speaker-photo\" alt=\"Contributor name\">\n\n            <h3> Carlos Alberto Reynoso Mej\u00eda <\/h3>\n\n            <p class=\"institution\">\n                Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\n            <\/p>\n\n            <h4 class=\"talk-title\">\n                Advances and new technologies in radionuclide therapy\n            <\/h4>\n\n            <button class=\"view-details-btn\" type=\"button\" data-name=\"Carlos Alberto Reynoso Mej\u00eda\" data-institution=\"Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\" data-talk=\"Advances and new technologies in radionuclide therapy\" data-photo=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Screenshot-2026-10-03-at-18.48.33.png\" data-abstract=\"More about this speaker soon\" data-bio=\"More about this speaker soon\">\n                View Details\n            <\/button>\n\n        <\/div>\n\n<!-- CONTRIBUTOR 14 -->\n        <div class=\"speaker-card\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Gerardo-Felix.jpg\" class=\"speaker-photo\" alt=\"Contributor name\">\n\n            <h3> Gerardo F\u00e9lix Mart\u00ednez <\/h3>\n\n            <p class=\"institution\">\n                Department of Electrical Engineering, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\n            <\/p>\n\n            <h4 class=\"talk-title\">\n                Talk Title: To be announced\n            <\/h4>\n\n            <button class=\"view-details-btn\" type=\"button\" data-name=\"Gerardo F\u00e9lix Mart\u00ednez\" data-institution=\"Department of Electrical Engineering, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\" data-talk=\"Talk Title: To be announced\" data-photo=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Gerardo-Felix.jpg\" data-abstract=\"More about this speaker soon\" data-bio=\"More about this speaker soon\">\n                View Details\n            <\/button>\n\n        <\/div>\n\n<!-- CONTRIBUTOR 15 -->\n        <div class=\"speaker-card\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Screenshot-2026-10-07-at-2.14.02.png\" class=\"speaker-photo\" alt=\"Contributor name\">\n\n            <h3> V\u00edctor Manuel Lara Camacho <\/h3>\n\n            <p class=\"institution\">\n                Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\n            <\/p>\n\n            <h4 class=\"talk-title\">\n                Talk Title: To be announced\n            <\/h4>\n\n            <button class=\"view-details-btn\" type=\"button\" data-name=\"V\u00edctor Manuel Lara Camacho\" data-institution=\"Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\" data-talk=\"Talk Title: To be announced\" data-photo=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Screenshot-2026-10-07-at-2.14.02.png\" data-abstract=\"More about this speaker soon\" data-bio=\"More about this speaker soon\">\n                View Details\n            <\/button>\n\n        <\/div>\n\n<!-- CONTRIBUTOR 16 -->\n        <div class=\"speaker-card\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/04\/People.png\" class=\"speaker-photo\" alt=\"Contributor name\">\n\n            <h3> Jos\u00e9 Luis Rosas-Huerta <\/h3>\n\n            <p class=\"institution\">\n                Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\n            <\/p>\n\n            <h4 class=\"talk-title\">\n                Bandgap tuning in perovskites compounds for applications in energy conversion or storage devices\n            <\/h4>\n\n            <button class=\"view-details-btn\" type=\"button\" data-name=\"Jos\u00e9 Luis Rosas-Huerta\" data-institution=\"Department of Physics, Universidad Aut\u00f3noma Metropolitana-Iztapalapa\" data-talk=\"Bandgap tuning in perovskites compounds for applications in energy conversion or storage devices\" data-photo=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/04\/People.png\" data-abstract=\"Perovskites compounds are one of the ne plus ultra compounds among all the complex oxides, since they present a wide variety of properties as ionic-electrical conductivity for use in fuel cells; photocatalytic, semiconductor and optical for their implementation in energy generation and\/or storage, such as in solar cells and hydrogen production; magnetoresistance and high spin polarizability for application in information storage devices and spin valves. The bandgap tuning is one of the most studied lines for energy conversion, as an example perovskite Sr\u2082FeNbO\u2086 shows a semiconductor and antiferromagnetic behavior, whereas the Sr\u2082FeMoO\u2086 is conductor and half-metal. Therefore, a modulated transition of these properties can be achieved through the substitution of Nb by Mo. Another exciting system is Sr\u2082Fe\u2081\u208b\u2093Nb\u2081\u208a\u2093O\u2086, which changes from metal (x = 1.0) to semiconductor one (x = 0.5) as the Nb content increases, but also exhibits photocatalytic properties for x = 0.5 and 1.0, which is a compatible unusual properties. These and other interesting results are presented in this work from an experimental and computational simulation perspective.\" data-bio=\"More about this speaker soon\">\n                View Details\n            <\/button>\n\n        <\/div>\n\n<!-- CONTRIBUTOR 17 -->\n        <div class=\"speaker-card\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/04\/People.png\" class=\"speaker-photo\" alt=\"Contributor name\">\n\n            <h3> Eliel Carvajal Quiroz <\/h3>\n\n            <p class=\"institution\">\n                Graduate Studies Section, ESIME-Culhuac\u00e1n, Instituto Polit\u00e9cnico Nacional\n            <\/p>\n\n            <h4 class=\"talk-title\">\n                Ion Batteries. The whole picture: from modelling to energy management\n            <\/h4>\n\n            <button class=\"view-details-btn\" type=\"button\" data-name=\"Eliel Carvajal Quiroz\" data-institution=\"Graduate Studies Section, ESIME-Culhuac\u00e1n, Instituto Polit\u00e9cnico Nacional\" data-talk=\"Ion Batteries. The whole picture: from modelling to energy management\" data-photo=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/04\/People.png\" data-abstract=\"Any device, even being extensively used, represents a challenge to propose improvement. That is the reason why ion-batteries\u2019 performance remains an active area for research, to improve the performance of any battery at any application, because there are differences between batteries for heart peace-markers, cell phones or drilling tools. Being focused on the batteries used in electric vehicles, the researchers in our group explore diverse compounds with perovskite-type structures (e.g., CaSnO3, SrZnO3, EuFeO3, GdTiO3, LaTiO3, etc.) that can serve as electrodes or electrolytes in such batteries. One subgroup investigates those compounds by means of numerical calculations in the framework of the Density Functional Theory. Another subgroup search for energy harvesting systems which allow to store energy in perovskite-based devices, being that energy harvested from the wind, mechanical processes, heat or static reflective-refractive systems. Finally, a third subgroup evaluates the performance of the harvesting\/conversion\/supply process by means of fuzzy controller management of the harvesting process. Some key results include volume changes (strontium stannates undergo contractions of 0.66% and 1.38% (Li doped configurations) and 0.48% and 0.98% (Na-doped configurations), dopant species and pressure dependence because the compressive strength of lanthanum titanate depends on the position of the substitutional Li \u2014though all systems exhibit ductility\u2014 and Li ionic conductivity decreases as hydrostatic pressure rises, and efficiency achieved under controlled conditions which suggests promising potential for the efficient and sustainable use of energy harvested via a concentrator, and also that a fuzzy control system optimizes the energy consumption extending the main battery's lifespan.\" data-bio=\"More about this speaker soon\">\n                View Details\n            <\/button>\n\n        <\/div>\n\n<!-- CONTRIBUTOR 18 -->\n        <div class=\"speaker-card\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/04\/People.png\" class=\"speaker-photo\" alt=\"Contributor name\">\n\n            <h3> Jos\u00e9 Agust\u00edn Palmas Le\u00f3n <\/h3>\n\n            <p class=\"institution\">\n                Universidad Aut\u00f3noma del Estado de Hidalgo\n            <\/p>\n\n            <h4 class=\"talk-title\">\n                Microstructural control and dielectric\u2013ferroelectric response of La\/Nb-co-doped BaTiO\u2083 ceramics prepared from hydrothermally synthesized powders\n            <\/h4>\n\n            <button class=\"view-details-btn\" type=\"button\" data-name=\"Jos\u00e9 Agust\u00edn Palmas Le\u00f3n\" data-institution=\"Universidad Aut\u00f3noma del Estado de Hidalgo\" data-talk=\"Microstructural control and dielectric\u2013ferroelectric response of La\/Nb-co-doped BaTiO\u2083 ceramics prepared from hydrothermally synthesized powders\" data-photo=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/04\/People.png\" data-abstract=\" La- and Nb-co-doped BaTiO\u2083 ceramics were fabricated from hydrothermally synthesized powders to clarify the relationship between dopant content, structural distortion, microstructural evolution, and dielectric\u2013ferroelectric performance. La\u2082O\u2083 and Nb\u2082O\u2085 were added in equal weight proportions at x = 0, 0.5, 1.0, and 2.0 wt.% of each oxide (corresponding to total oxide additions of 0, 1.0, 2.0, and 4.0 wt.%, respectively), and the resulting compositions were denoted as BT\u2013xLN. The dopants were introduced by high-energy mechanical milling, followed by sintering at 1300 \u00b0C for 4 h. X-ray diffraction, Rietveld refinement, Raman spectroscopy, high-resolution scanning electron microscopy, density and porosity measurements, dielectric spectroscopy, and polarization\u2013electric field characterization were employed. The undoped and BT\u20130.5LN samples retained the clearest tetragonal distortion, with c\/a ratios of 1.007 and 1.011, respectively, whereas higher dopant contents produced a pseudocubic-like average structure. Moderate La\/Nb addition reduced grain size, improved densification, and promoted a more homogeneous microstructure. Consequently, the BT\u20130.5LN composition exhibited the highest relative permittivity, approximately 3700 at 10 kHz, together with a Curie temperature near 103 \u00b0C, a maximum polarization of approximately 10.0 \u03bcC cm\u207b\u00b2, and the highest remanent polarization of 2.7 \u03bcC cm\u207b\u00b2. Further dopant addition resulted in submicrometric grains, increased porosity, reduced tetragonal distortion, and suppressed dielectric and ferroelectric responses. The observed behavior indicates that the electrical properties are governed by the coupled evolution of lattice distortion, crystallite and grain size, and porosity rather than by dopant concentration alone. These results identify BT\u20130.5LN as an effective compositional window for balancing densification, microstructural homogeneity, tetragonal-phase stability, and electrical performance in BaTiO\u2083-based functional ceramics.\" data-bio=\"More about this speaker soon\">\n                View Details\n            <\/button>\n\n        <\/div>\n\n<!-- CONTRIBUTOR 19 -->\n        <div class=\"speaker-card\">\n\n            <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Screenshot-2026-10-07-at-2.11.35.png\" class=\"speaker-photo\" alt=\"Contributor name\">\n\n            <h3> Julieta Mateos <\/h3>\n\n            <p class=\"institution\">\n                United Imaging Healthcare\n            <\/p>\n\n            <h4 class=\"talk-title\">\n                The Physics of Measuring Brain Structure: From MRI to Quantitative Characterization\n            <\/h4>\n\n            <button class=\"view-details-btn\" type=\"button\" data-name=\"Julieta Mateos\" data-institution=\"United Imaging Healthcare\" data-talk=\"Iron oxide nanoparticles and polyphenols in theranostics development\" data-photo=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Screenshot-2026-10-07-at-2.11.35.png\" data-abstract=\"Magnetic resonance imaging is, at its core, a physics experiment: nuclear spins in a magnetic field produce signals that we reconstruct into images of the living brain. But an image is not yet a measurement. Extracting quantitative information about brain structure requires defining meaningful observables, understanding how acquisition and processing affect them, and assessing their uncertainty and reproducibility. In this talk, I will present my doctoral and postdoctoral research on brain morphometry as a case study of this measurement problem.\n\nBrain anatomy is commonly described in terms of size: volume, cortical thickness, and surface area. Yet the brain is a highly folded three-dimensional structure, and regions of similar size can differ markedly in their geometry. I will discuss two geometric observables that go beyond size: sulcal width, which characterizes the opening of cortical folds, and three-dimensional tortuosity, which quantifies how anatomical structures curve and twist in space. I will show how these quantities can be defined and extracted from MR images, how acquisition and processing choices influence their measurement, and how they can reveal structural alterations that may remain hidden when size alone is considered.\n\nThese examples also illustrate a fundamental connection between instrumentation and measurement. Advances toward higher-field MRI systems, including 5 T and 7 T, can provide increased signal-to-noise ratio and enable higher spatial resolution, potentially revealing anatomical features that are difficult to resolve at conventional field strengths. At the same time, higher fields introduce new physical and technical challenges, emphasizing that what we are able to measure is inseparable from the capabilities and limitations of the instrument itself.\n\nTogether, these examples illustrate a broader challenge at the intersection of experimental physics and quantitative imaging: how advances in instrumentation, image formation, and quantitative analysis can expand the range of measurable features in a complex biological system such as the human brain. They also highlight open problems where physicists can contribute to developing new ways of observing and quantifying brain structure.\" data-bio=\"More about this speaker soon\">\n                View Details\n            <\/button>\n\n        <\/div>\n\n    <\/div> <!-- ESTE ES EL CIERRE DEL GRID CORREGIDO -->\n<\/section> <!-- ESTE ES EL CIERRE DE LA SECCI\u00d3N CORREGIDO -->\n\n<!-- MODAL (una sola vez, fuera del grid) -->\n<div class=\"speaker-modal-overlay\" id=\"speakerModalOverlay\">\n    <div class=\"speaker-modal\" role=\"dialog\" aria-modal=\"true\" aria-labelledby=\"modalSpeakerName\">\n        <button class=\"speaker-modal-close\" id=\"speakerModalClose\" aria-label=\"Close\">\u00d7<\/button>\n        <img decoding=\"async\" src=\"\" class=\"modal-photo\" id=\"modalPhoto\" alt=\"\">\n        <h3 id=\"modalSpeakerName\"><\/h3>\n        <p class=\"institution\" id=\"modalInstitution\"><\/p>\n        <h4 class=\"talk-title\" id=\"modalTalk\"><\/h4>\n\n        <div class=\"modal-details\">\n\n            <h5>Abstract<\/h5>\n            <p id=\"modalAbstract\"><\/p>\n\n            <h5>Biography<\/h5>\n            <p id=\"modalBio\"><\/p>\n\n        <\/div>\n    <\/div>\n<\/div>\n\n<style>\n\n.speakers-section{\n    padding:90px 20px;\n    background:rgba(230,228,205,.55);\n    backdrop-filter:blur(3px);\n}\n\n.section-title{\n    text-align:center;\n    font-family:\"Times New Roman\", Times, serif;\n    font-size:3rem;\n    color:#550527;\n    margin-bottom:60px;\n}\n\n.speaker-grid{\n    display:grid;\n    grid-template-columns:repeat(auto-fit,minmax(300px,1fr));\n    gap:35px;\n    max-width:1400px;\n    margin:auto;\n}\n\n.speaker-card{\n    background:white;\n    border-radius:22px;\n    padding:35px;\n    box-shadow:0 12px 30px rgba(0,0,0,.08);\n    transition:.35s;\n    border-top:6px solid #D78521;\n    display:flex;\n    flex-direction:column;\n    align-items:center;\n}\n\n.speaker-card:hover{\n    transform:translateY(-8px);\n    box-shadow:0 18px 45px rgba(0,0,0,.15);\n}\n\n.speaker-photo{\n    width:130px;\n    height:130px;\n    border-radius:50%;\n    object-fit:cover;\n    display:block;\n    margin:auto;\n    border:5px solid #69725E;\n}\n\n.speaker-card h3{\n    margin-top:20px;\n    text-align:center;\n    font-family:\"Times New Roman\", Times, serif;\n    color:#221D23;\n}\n\n.institution{\n    text-align:center;\n    font-style:italic;\n    color:#69725E;\n    margin-bottom:18px;\n}\n\n.talk-title{\n    text-align:center;\n    color:#550527;\n    font-size:1.1rem;\n    min-height:60px;\n}\n\n\/* Button replaces <summary> \u2014 same look, now triggers the modal instead of inline expansion *\/\n.view-details-btn{\n    cursor:pointer;\n    background:#69725E;\n    color:white;\n    padding:12px 24px;\n    border:none;\n    border-radius:10px;\n    text-align:center;\n    font-weight:bold;\n    font-size:1rem;\n    margin-top:20px;\n    transition:background .25s;\n}\n\n.view-details-btn:hover{\n    background:#550527;\n}\n\n\/* ---------- CONTRIBUTIONS BANNER ---------- *\/\n\n.contributions-banner{\n    background:#550527;\n    padding:28px 20px;\n    text-align:center;\n}\n\n.contributions-banner span{\n    font-family:\"Times New Roman\", Times, serif;\n    font-size:2.2rem;\n    letter-spacing:1px;\n    color:#F4F1EA;\n}\n\n\/* ---------- MODAL ---------- *\/\n\n.speaker-modal-overlay{\n    display:none;\n    position:fixed;\n    inset:0;\n    background:rgba(34,29,35,.6);\n    backdrop-filter:blur(4px);\n    z-index:1000;\n    align-items:center;\n    justify-content:center;\n    padding:20px;\n}\n\n.speaker-modal-overlay.open{\n    display:flex;\n}\n\n.speaker-modal{\n    background:#fff;\n    border-radius:22px;\n    padding:45px;\n    max-width:560px;\n    width:100%;\n    max-height:85vh;\n    overflow-y:auto;\n    position:relative;\n    border-top:6px solid #D78521;\n    box-shadow:0 25px 60px rgba(0,0,0,.3);\n    animation:modalPop .25s ease;\n}\n\n@keyframes modalPop{\n    from{ opacity:0; 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Their analysis in electrophysiological experiments provides valuable information on the synaptic dynamics of cortical neurons under both physiological and pathological conditions [1,2]. Physiological signals have been shown to exhibit fractal properties, characterized by long-range correlations and 1\/f type power spectra (pink noise), which have been associated with homeostatic mechanisms and may be linked to chaotic dynamics described by random matrix theory [3\u20135]. The analysis of physiological signals exhibiting 1\/f noise is based on three fundamental measures: the Hurst exponent (H) which quantifies long-range correlation structure; the correlation dimension (D) which provides information about the underlying organization of the dynamics; and the correlation dimension (C) which allows for the discrimination between deterministic behavior and stochastic processes [6]. In this work simulated miniature postsynaptic currents modeled as time series are analyzed to characterize their complexity from a dynamical systems perspective. We present the computational framework that reproduces in silico an experiment involving in neurons. The biophysical model incorporates the properties of the neuronal membrane and excitatory synapses with physiologically relevant kinetic parameters, as experimentally implemented using the Patch-Clamp technique [7]. The different conditions of synaptic activity observed in vivo are emulated under two regimes of presynaptic stimulation: random and correlated. Subsequently, long range values obtained from the power spectral density (PSD) are used to characterize mPSC, while assessing and accounting for the possible presence of 1\/f behavior. [1] Johnston et al.,Foundations of Cellular Neurophysiology (MIT Press,1994); [2] A. L. Moreno-Salinas, et al., Front. Neurosci. 13, 700 (2019); [3] A. Eke, et al., Eur J Physiol 23, R1 (2002); [4] R. Fossion, et al., in Quantitative models for microscopic to macroscopic biological macromolecules and tissues (Springer, 2018); [5] E. Faleiro, et al., PRL 93, 244101 (2004); [6] Shu et al., AWE 2, 100028 (2025); [7] N. Graziane, et al., Electrophysiological analysis of synaptic transmission, 2nd ed., Vol. 470 (Springer, 2016).\n                    <\/p>\n\n                <\/div>\n\n            <\/article>\n\n\n            <!-- =================================================\n                 RESEARCHER 2\n                 ================================================= -->\n\n            <article class=\"ecr-card\">\n\n                <div class=\"ecr-photo-wrapper\">\n                    <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/04\/People.png\" alt=\"Jaime Alejandro Franco Medrano\" class=\"ecr-photo\">\n                <\/div>\n\n                <div class=\"ecr-info\">\n\n                    <h3>\n                        M\u00f3nica Ledesma Motolin\u00eda\n                    <\/h3>\n\n                    <p class=\"ecr-institution\">\n                        Universidad Aut\u00f3noma Metropolitana Unidad Iztapalapa\n                    <\/p>\n\n                    <h4 class=\"ecr-talk-title\">\n                        Internal structure of thermoresponsive microgels: from synthetic PNIPAM to biocompatible HPC\n                    <\/h4>\n\n                    <p class=\"ecr-abstract\">\n                        Microgels are colloidal particles formed by cross-linked polymers that respond to stimuli, such as pH, hydrostatic pressure, ionic strength, and\/or temperature. Thermosensitive microgels undergo a volume phase transition in response to a change in temperature defined as the lower critical solution temperature (LCST). One of the most extensively studied thermosensitive polymers is poly(N-isopropylacrylamide) (PNIPAM) because its LCST lies between 32\u201334\u00b0C, however, its applications are limited by its poor biocompatibility. In contrast, less-explored polymers such as hydroxypropyl cellulose (HPC) represent a novel approach. This session presents advances in the synthesis and internal morphology of thermosensitive pNIPAM and HPC microgels.\n                    <\/p>\n\n                <\/div>\n\n            <\/article>\n\n\n            <!-- =================================================\n                 RESEARCHER 3\n                 ================================================= -->\n\n            <article class=\"ecr-card\">\n\n                <div class=\"ecr-photo-wrapper\">\n                    <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/04\/People.png\" alt=\"Marco Antonio Zurita Mart\u00ednez\" class=\"ecr-photo\">\n                <\/div>\n\n                <div class=\"ecr-info\">\n\n                    <h3>\n                        Jes\u00fas G\u00f3mez Santana\n                    <\/h3>\n\n                    <p class=\"ecr-institution\">\n                        Universidad Aut\u00f3noma Metropolitana \n                    <\/p>\n\n                    <h4 class=\"ecr-talk-title\">\n                        Granular Dynamics in Air-Liquid Interface\n                    <\/h4>\n\n                    <p class=\"ecr-abstract\">\n\n                       The rheology and dynamics of granular systems, which are inherently out of thermodynamic equilibrium, are relatively poorly understood despite being of considerable interest for applications, as well as in their own right as an important regime of statistical physics. Furthermore, measuring a system\u2019s rheology via individual particle motions, the basis of microrheology, is of interest as its macroscopic analogue.\n                    <\/p>\n\n                <\/div>\n\n            <\/article>\n\n       \n\n        <\/div>\n\n    <\/div>\n\n<\/section>\n\n\n<style>\n\n\/* =========================================================\n   LGCMM 2026\n   EARLY-CAREER RESEARCHERS\n   ========================================================= *\/\n\n\n\/* =========================================================\n   SECTION\n   ========================================================= *\/\n\n.ecr-section {\n\n    background:#F6F4EE;\n\n    color:#550527;\n\n    padding:90px 30px;\n\n    overflow:hidden;\n\n}\n\n\n\/* =========================================================\n   CONTAINER\n   ========================================================= *\/\n\n.ecr-container {\n\n    max-width:1500px;\n\n    margin:auto;\n\n    text-align:center;\n\n}\n\n\n\/* 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font-size:1.15rem;\n\n    line-height:1.35;\n\n    font-weight:400;\n\n    color:#550527;\n\n    margin:0 0 15px;\n\n}\n\n\n\/* =========================================================\n   ABSTRACT\n   ========================================================= *\/\n\n.ecr-abstract {\n\n    font-family:\"Times New Roman\", Times, serif;\n\n    font-size:.94rem;\n\n    line-height:1.6;\n\n    color:#333;\n\n    text-align:justify;\n\n    margin:0;\n\n}\n\n\n\/* =========================================================\n   MATHJAX\n   ========================================================= *\/\n\n.ecr-abstract mjx-container {\n\n    max-width:100%;\n\n    overflow-x:auto;\n\n    overflow-y:hidden;\n\n}\n\n\n\/* =========================================================\n   ANIMACI\u00d3N\n   ========================================================= *\/\n\n.ecr-card {\n\n    opacity:0;\n\n    transform:translateY(35px);\n\n}\n\n\n.ecr-card.ecr-visible {\n\n    opacity:1;\n\n    transform:translateY(0);\n\n}\n\n\n\/* =========================================================\n   TABLET\n   ========================================================= *\/\n\n@media(max-width:1000px) {\n\n    .ecr-section {\n\n        padding:75px 25px;\n\n    }\n\n    .ecr-grid {\n\n        grid-template-columns:1fr;\n\n        max-width:850px;\n\n        margin:auto;\n\n    }\n\n}\n\n\n\/* =========================================================\n   MOBILE\n   ========================================================= *\/\n\n@media(max-width:650px) {\n\n    .ecr-section {\n\n        padding:65px 18px;\n\n    }\n\n\n    .ecr-symposium-title {\n\n        font-size:2rem;\n\n        margin-bottom:45px;\n\n    }\n\n\n    .ecr-grid {\n\n        gap:30px;\n\n    }\n\n\n    .ecr-card {\n\n        padding:30px 22px 32px;\n\n    }\n\n\n    .ecr-photo {\n\n        width:145px;\n\n        height:145px;\n\n    }\n\n\n    .ecr-info h3 {\n\n        font-size:1.45rem;\n\n        text-align:center;\n\n    }\n\n\n    .ecr-institution {\n\n        text-align:center;\n\n    }\n\n\n    .ecr-talk-title {\n\n        text-align:center;\n\n    }\n\n\n    .ecr-abstract {\n\n        font-size:.92rem;\n\n        text-align:justify;\n\n    }\n\n}\n\n<\/style>\n\n\n<script>\n\n\/* =========================================================\n   ANIMACI\u00d3N AL HACER SCROLL\n   ========================================================= *\/\n\ndocument.addEventListener(\"DOMContentLoaded\", () => {\n\n    const cards =\n        document.querySelectorAll(\".ecr-card\");\n\n\n    const observer =\n        new IntersectionObserver(\n\n            entries => {\n\n                entries.forEach(entry => {\n\n                    if(entry.isIntersecting) {\n\n                        entry.target.classList.add(\"ecr-visible\");\n\n                        observer.unobserve(entry.target);\n\n                    }\n\n                });\n\n            },\n\n            {\n               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the complete PDF.\n        <\/p>\n\n\n        <!-- =========================================================\n             PROGRAM PDF PREVIEW\n             ========================================================= -->\n\n        <div class=\"lgm-pdf-preview\">\n\n            <iframe src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Programa_IX_Garcia-Colin_2026_Experimental_Physics.pdf\" title=\"LGCMM 2026 Program\" loading=\"lazy\">\n            <\/iframe>\n\n        <\/div>\n\n\n        <!-- =========================================================\n             DOWNLOAD BUTTONS\n             ========================================================= -->\n\n        <div class=\"lgm-pdf-buttons\">\n\n            <!-- PROGRAM -->\n\n            <a class=\"lgm-pdf-button\" href=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Programa_IX_Garcia-Colin_2026_Experimental_Physics.pdf\" target=\"_blank\" download=\"\">\n                \n                <span class=\"lgm-pdf-icon\">\u2193<\/span>\n                Download Program\n            <\/a>\n\n\n            <!-- SCHEDULE -->\n\n            <a class=\"lgm-pdf-button\" href=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Programa_IX_Garcia-Colin_2026_Experimental_Physics.pdf\" target=\"_blank\" download=\"\">\n                \n                <span class=\"lgm-pdf-icon\">\u2193<\/span>\n                Download Schedule\n            <\/a>\n\n        <\/div>\n\n    <\/div>\n\n<\/section>\n\n\n<style>\n\n\/* =========================================================\n   LGCMM 2026 \u2014 PDF SECTION\n   ========================================================= *\/\n\n.lgm-pdf-section {\n\n    padding: 80px 25px;\n\n    background: #F6F4EE;\n\n    color: #550527;\n\n    font-family: \"Times New Roman\", Times, serif;\n\n}\n\n\n.lgm-pdf-content {\n\n    width: 100%;\n\n    max-width: 1000px;\n\n    margin: 0 auto;\n\n    text-align: center;\n\n}\n\n\n\/* 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class=\"lgm-organizers-header\">\n\n            <span>Experimental Physics<\/span>\n\n            <h2>Organizing Committee<\/h2>\n\n            <div class=\"lgm-organizers-line\"><\/div>\n\n        <\/div>\n\n\n        <!-- ORGANIZADORES -->\n\n        <div class=\"lgm-organizers-list\">\n\n\n            <!-- ORGANIZADOR I -->\n\n            <div class=\"lgm-organizer\">\n\n                <!-- CAMBIO: Se agreg\u00f3 la etiqueta img para la foto del organizador con una URL dummy -->\n                <img decoding=\"async\" src=\"https:\/\/lgcmm.izt.uam.mx\/wp-content\/uploads\/2026\/10\/Roberto-Olayo.jpeg\" alt=\"Roberto Olayo Valles\" class=\"lgm-organizer-photo\">\n\n                <h3>\n                    Roberto Olayo Valles\n                <\/h3>\n<h4>\n                    UAM-I \n                 <\/h4>\n\n            <\/div>\n\n\n            <!-- ORGANIZADOR II -->\n\n            <div class=\"lgm-organizer\">\n\n                <!-- CAMBIO: Se agreg\u00f3 la etiqueta img para 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