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X-ORIGINAL-URL:https://www.chimieparistech.psl.eu
X-WR-CALDESC:Évènements pour Chimie ParisTech - PSL
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TZID:Europe/Paris
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DTSTART:20240331T010000
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DTSTART:20241027T010000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20250621T080000
DTEND;TZID=Europe/Paris:20250922T170000
DTSTAMP:20250827T093355Z
CREATED:20250605T131222Z
LAST-MODIFIED:20250827T093355Z
UID:27390-1750492800-1758560400@www.chimieparistech.psl.eu
SUMMARY:ParisTech International Admission Program is open
DESCRIPTION:Learn more about the ParisTech International Admission Program \nLien vers la communauté WhatsApp ParisTech pour poser toutes vos questions au sujet du programme : https://chat.whatsapp.com/KLJigQfgsDnA1VFwKNgtA8
URL:https://www.chimieparistech.psl.eu/evenement-agenda/paristech-international-admission-program-is-open/
CATEGORIES:International
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20250828T080000
DTEND;TZID=Europe/Paris:20251103T170000
DTSTAMP:20250828T082232Z
CREATED:20250828T081605Z
LAST-MODIFIED:20250828T082232Z
UID:27778-1756368000-1762189200@www.chimieparistech.psl.eu
SUMMARY:Cours du soir de l'université PSL - La chimie dans notre quotidien
DESCRIPTION:Conçus pour les esprits curieux\, exigeants et actifs\, les Cours du soir de l’Université PSL vous ouvrent les portes d’un enseignement d’excellence. Ces cycles de 20 heures sont accessibles en présentiel et à distance\, pour s’intégrer facilement à votre quotidien. Ils ne nécessitent aucun prérequis. Dès le 4 novembre 2025\, Chimie ParisTech-PSL vous invite à participer au cycle des Cours du soir de l’Université PSL dédié à la chimie dans quotidien\, pour explorer la chimie telle qu’elle façonne notre vie de tous les jours. \nInscriptions ouvertes ici
URL:https://www.chimieparistech.psl.eu/evenement-agenda/cours-du-soir-de-luniversite-psl/
LOCATION:Chimie ParisTech – PSL\, 11\, rue Pierre et Marie Curie\, Paris\, 75005\, France
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20250901T090000
DTEND;TZID=Europe/Paris:20250901T170000
DTSTAMP:20250822T093433Z
CREATED:20250721T134844Z
LAST-MODIFIED:20250822T093433Z
UID:27687-1756717200-1756746000@www.chimieparistech.psl.eu
SUMMARY:Rentrée 2025 Cycle Ingénieur
DESCRIPTION:Téléchargez votre Livret accueil étudiant rentrée 2025 FR Cycle Ingénieur
URL:https://www.chimieparistech.psl.eu/evenement-agenda/rentree-2025-cycle-ingenieur/
CATEGORIES:Evénement,Formation
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20250905T110000
DTEND;TZID=Europe/Paris:20250905T140000
DTSTAMP:20250829T122423Z
CREATED:20250829T122423Z
LAST-MODIFIED:20250829T122423Z
UID:27783-1757070000-1757080800@www.chimieparistech.psl.eu
SUMMARY:Séminaire Programme Gradué Chimie PSL
DESCRIPTION:Enhancing Mechanical Properties in Injectable Nanocomposite Hydrogels through Dynamic Covalent Bonding at the Polymer-Nanoparticle Interface\n \nBruno F. Urbano\nDepartamento de Polímeros\, Facultad de Ciencias Químicas\, Universidad de Concepción\, Edmundo Larenas 129\, Concepción\, Chile.\nEmail: burbano@udec.cl\n \nThe incorporation of nanoparticles into hydrogels to form nanocomposite hydrogels (NCgels) has emerged as a promising approach for enhancing both the physical and mechanical properties of polymers\, while simultaneously introducing new functionalities. The mechanical reinforcement of hydrogels is generally attributed to the effective transfer of stress from polymer chains to nanoparticles\, which typically possess a higher modulus and thus serve as reinforcing agents. However\, a significant disparity in mechanical properties\, such as Young’s modulus\, between the polymer matrix (measured in kPa) and the nanoparticles (measured in GPa) can result in localized stress concentrations. These concentrations often occur at the interface between the polymer and the nanoparticles\, leading to challenges such as particle-matrix debonding\, void formation\, and\, ultimately\, material failure[1].\nIn this study\, we examined the polymer-nanoparticle interface within hydrogels by incorporating dynamic covalent bonds (DCBs) based on boronic acid/boronate esters. These DCBs serve as energy-dissipating sites to help reduce stress concentrations. To achieve this\, a Wulff-type boronic acid-based and phenyl boronic acid monomer was grafted onto the surface of SiO2 nanoparticles using reversible addition-fragmentation chain transfer (RAFT) polymerization. Afterwards\, these functionalized nanoparticles were incorporated into boronic acid-modified alginate at concentrations of 2.0 wt% and up to 0.5 wt%\, respectively. The resulting hydrogels displayed liquid-like behavior below pH 7.6. They transitioned to a gel state above this pH\, a change caused by the formation of more stable esters through boron hybridization.\nThe hydrogels were characterized using rheometry to evaluate their viscoelastic properties. Incorporating functionalized nanoparticles caused a significant increase in the storage modulus compared to two control hydrogels: one without nanoparticles and another loaded with non-functionalized nanoparticles. This enhancement is due to the formation of boronate esters between the nanoparticle surface and the polymer matrix. Strain-stiffening behavior was also observed as the material approached its yield point[2]. Additionally\, cyclic deformation tests were performed to assess the reversibility of the hydrogels under both low and high strain rates. The hydrogels maintained their storage modulus under low deformation after three cycles\, while a notable decrease in the storage modulus was seen at high deformation rates.\n \nAcknowledgements: The authors thank ANID\, FONDECYT Regular 1211450 and 1252146\n\nReferences\n[1] M. Quaresimin\, et al. Composites Science and Technology 123 (2016) 187e204\n[2] Rachel Ollier\, et al. Chemical Science\, 2023\,14\, 4796-4805.
URL:https://www.chimieparistech.psl.eu/evenement-agenda/seminaire-programme-gradue-chimie-psl-160/
LOCATION:amphi Charpak\, ESPCI Paris-PSL
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20250908T080000
DTEND;TZID=Europe/Paris:20250908T170000
DTSTAMP:20250822T093540Z
CREATED:20250822T093540Z
LAST-MODIFIED:20250822T093540Z
UID:27759-1757318400-1757350800@www.chimieparistech.psl.eu
SUMMARY:Rentrée 2025 - Masters
DESCRIPTION:
URL:https://www.chimieparistech.psl.eu/evenement-agenda/rentree-2025-masters/
CATEGORIES:Evénement
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20250911T140000
DTEND;TZID=Europe/Paris:20250911T170000
DTSTAMP:20250904T154531Z
CREATED:20250904T154531Z
LAST-MODIFIED:20250904T154531Z
UID:27932-1757599200-1757610000@www.chimieparistech.psl.eu
SUMMARY:Séminaire Programme Gradué Chimie PSL
DESCRIPTION:Thursday September 11 at 2:00 pm (Paris time)\,Room Holwek\,building C\, 1st floor\, 10 rue Vauquelin\, ESPCI\,at LPEM in hybrid format:  Local probing of transverse thermoelectric effects in meso- and nano scale devices by Pascal Gehring\, Université Catholique de Louvain\, Belgium.\n\n\n\n\n\nSolid-state cooling devices offer compact\, quiet\, reliable\, and environmentally friendly solutions\, which currently rely on conventional thermoelectric (TE) effects. However\, despite more than two centuries of research\, classical thermoelectric coolers remain limited by low efficiency\, restricting their broader application. In our work\, we explore transverse thermoelectric effects as an alternative pathway for on-chip cooling. Using our unique scanning thermal microscopy methodology\, we are able to locally probe several transverse effects—such as the anomalous Ettingshausen effect (AEE)\, local Nernst effects\, and local spin Seebeck effects—on the nanoscale. This approach allows us to directly study the influence of defects\, interfaces\, or magnetic textures on thermoelectric performance\, thus opening up new routes for engineering high-efficiency devices. As a concrete example\, we demonstrate that the AEE can be strongly enhanced in materials with non-trivial band topologies\, such as the Heusler alloy Co2MnGa. In situ scanning thermal microscopy reveals a record-breaking room-temperature anomalous Ettingshausen coefficient in µm-sized Co2MnGa devices. Furthermore\, by fabricating nanoribbon devices\, we induce a geometrical Peltier effect that increases the figure of merit by 170%. The combined cooling action of the anomalous Ettingshausen and Peltier effects yields a nm-sized local spot cooler\, highlighting the unique potential of nanostructured magnetic Weyl semimetals for solid-state thermal management.\n\nZoom link:https://espci.zoom.us/j/85820964954?pwd=blapkqDski6mvLdmAwE4Jz6t9hb6Sh.1\n\n\n\n\nID: 858 2096 4954Passcode: Max_Planck
URL:https://www.chimieparistech.psl.eu/evenement-agenda/seminaire-programme-gradue-chimie-psl-161/
LOCATION:évènement hybride
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20250911T140000
DTEND;TZID=Europe/Paris:20250911T170000
DTSTAMP:20250905T092307Z
CREATED:20250905T092307Z
LAST-MODIFIED:20250905T092307Z
UID:27934-1757599200-1757610000@www.chimieparistech.psl.eu
SUMMARY:Séminaire Programme Gradué Chimie PSL
DESCRIPTION:Antoine MONIER (LOF\, Bordeaux) for a SIMM seminar next week Thursday September 11 at 2 pm in Amphi Charpak\, « Osmotic driven phenomena: towards local tree-on-a-chip observations ». Sap circulation in vascular plants are governed by passive mechanisms exploited by the trees. Crude sap\, composed of water\, is transported in the xylem vessels\, from roots to leaves by evapotranspiration. This results in a negative pressure driven flow at typically -10bar. At the leaf\, crude is transformed into elaborated sap\, containing sucrose (20-30% weight) and nutriments to be transported to the plant growing parts\, in the phloem vessels. This sap circulation relies on osmotic pressure gradients\, through the Munch mechanism. It relies on the fact that xylem and phloem are separated by hemi-permeable membranes. Because of the sucrose concentration difference across the membrane\, water is osmotically pumped from xylem to phloem\, pushing the elaborated sap.In this talk\, I discuss how we mimic these mechanisms using microfluidic devices\, close to the tree vessel sizes. We integrate into microfluidic chips permeable membranes made of mixture of polymers (higher molecular weight)\, water\, an initiator and inhibitor and colloid tracers. We characterize their permeation properties to water and solutes\, considering only steric repulsions\, to find their molecular weight cut off (MWCO). Using solutions of tabulated osmotic pressures\, above the cut-off\, we show that we are able to maintain water stable down to -26bar in these systems. We mimic a xylem-like geometry using different concentration to induce a water flow at negative pressure. Next\, we focus on the phloem part using sucrose\, below the MWCO\, inducing transient osmotic flows and membrane deformation at high concentration (20-30% weight). Using Raman spectroscopy we measure sucrose concentrations to quantify the sucrose invasion across the membrane and relate it with transport theory. Finally\, due to high osmotic pressures and sucrose gradients in our systems we evidence that colloid tracers can migrate spontaneously from high to low sucrose regions by diffusiophoresis.
URL:https://www.chimieparistech.psl.eu/evenement-agenda/seminaire-programme-gradue-chimie-psl-162/
LOCATION:amphi Charpak\, ESPCI Paris-PSL
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20250918T140000
DTEND;TZID=Europe/Paris:20250918T160000
DTSTAMP:20250912T100055Z
CREATED:20250912T100055Z
LAST-MODIFIED:20250912T100055Z
UID:28052-1758204000-1758211200@www.chimieparistech.psl.eu
SUMMARY:Séminaire Programme Gradué Chimie PSL
DESCRIPTION:Thursday September 18 at 2:00 pm (Paris time)\, Room Boreau\, building C\, 2nd floor\, 10 rue Vauquelin\, ESPCI\, at LPEM in hybrid format:  A minimal description of strange metals\nby Simone Fratini\, Intitut Néel\, Grenoble \n\nAfter reviewing recent exact numerical results on the transport and optical response of the t-J and Hubbard models\, I will introduce a phenomenological theory of transport and optical properties of quantum materials that implements the Kubo formula starting from a minimal\, physically motivated assumption on the motion of the charge carriers. In bad metals\, where wave-like coherence is lost at each hop between neighboring atoms\, this immediately leads to T-linear resistivities with apparently Planckian scattering rates. The theory also explains omega/T scaling\, stretched Drude peaks and displaced Drude peaks that are commonly observed in optical absorption experiments in strange metals. I will briefly discuss direct consequences regarding the RIXS and M-EELS spectra in the cuprates\, as well as broader implications of the present results for charge transport in quantum paraelectrics and relaxation processes in dielectrics.\n \nZoom link: https://espci.zoom.us/j/81366822558?pwd=CRmkP4Id2175K55zFKuXP2AogPlo2s.1ID: 813 6682 2558Passcode: K.G.Wilson
URL:https://www.chimieparistech.psl.eu/evenement-agenda/seminaire-programme-gradue-chimie-psl-164/
LOCATION:évènement hybride
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20250922T140000
DTEND;TZID=Europe/Paris:20250922T163000
DTSTAMP:20250911T102110Z
CREATED:20250911T101944Z
LAST-MODIFIED:20250911T102110Z
UID:28046-1758549600-1758558600@www.chimieparistech.psl.eu
SUMMARY:Séminaire Programme Gradué Chimie PSL
DESCRIPTION:Le laboratoire C3M aura le plaisir d’accueillir la Professeure Arthi Jayaraman de l’université du Delaware (États-Unis) les 22\, 23 et 24 septembre prochains. Arthi donnera une conférence intitulée « Machine learning based analyses and interpretation of structural characterization data from soft materials » le lundi 22/09 à 14h00 dans l’amphithéâtre Boreau de l’ESPCI Paris – PSL. \n\nMachine learning based analyses and interpretation of structural characterization data\nfrom soft materials\, Prof. Arthi Jayaraman\n1Department of Chemical and Biomolecular Engineering\, University of Delaware\, Newark\, DE\n2Department of Materials Science and Engineering\, University of Delaware\, Newark\, DE\n3Data Science Institute\, University of Delaware\, Newark\, DE \nMy research group specializes in developing physics-based molecular models and simulation\nmethods\, as well as data-driven machine learning models\, for designing and characterizing soft\nmacromolecular materials. In recent years\, we have dedicated significant efforts to creating\nmachine learning–based computational methods that accelerate and automate the interpretation\nof structural characterization data from scattering and microscopy techniques. In this talk\, I will\nhighlight several examples to showcase our recent work (e.g.\, CREASE [1-4]\, PairVAE [5]\,\nmicroscopy analyses [6\,7]). I will explain the key features of these methods and how we apply\nthem to experimental data shared by our collaborators to establish structure-property\nrelationships across a broad range of soft materials. \nReferences\n[1] C. M. Heil et al.\, ACS Central Science 8\, 7\, 996-1007 (2022)\n[2] C. M. Heil et al.\, JACS Au 3\, 3\, 889–904 (2023)\n[3] S.V.R. Akepati et al.\, JACS Au 4\, 4\, 1570–1582 (2024)\n[4] R. Adhikari et al.\, J. Appl. Cryst\, 58\, 1384–1398 (2025)\n[5] S. Lu and A. Jayaraman\, JACS Au 3\, 9\, 2510–2521 (2023)\n[6] A. Paruchuri et al.\, Digital Discovery\, 3\, 2533-2550 (2024)\n[7] S. Lu and A. Jayaraman\, Progress in Polymer Science 153\, 101828 (2024)\nUsers interested in the open-source codes can access them here: https://github.com/arthijayaraman-lab \nBiography:\nArthi Jayaraman is currently a full professor in the Departments of Chemical and\nBiomolecular Engineering and Materials Science and Engineering at the University of Delaware\n(UD)\, Newark. She also directs an NSF-funded NRT graduate traineeship program on ‘Computing\nand Data Science Training for Materials Innovation\, Discovery\, and Analytics’. She serves as an\nassociate editor for Macromolecules and was the inaugural deputy editor for the first three years\nof ACS Polymers Au.\nJayaraman earned her Ph.D. in Chemical Engineering from North Carolina State\nUniversity and completed her postdoctoral research in Materials Science and Engineering at the\nUniversity of Illinois at Urbana-Champaign. After serving as the Patten Assistant Professor in the\nDepartment of Chemical and Biological Engineering at the University of Colorado (CU) Boulder\,\nshe joined UD faculty in 2014. Her research focuses on developing and applying computational\ntechniques to study polymer nanocomposites\, blends\, solutions\, and biomaterials.\nHer honors include the American Chemical Society (ACS) PMSE Fellowship (2024)\, UD\nCollege of Engineering Faculty Award for Excellence in Teaching (2023)\, AIChE COMSEF Impact\nAward (2021)\, American Physical Society (APS) Fellowship (2020)\, Dudley Saville Lectureship at\nPrinceton University (2016)\, ACS PMSE Young Investigator (2014)\, AIChE COMSEF division\nYoung Investigator Award (2013)\, CU Provost Faculty Achievement Award (2013)\, Department of\nEnergy (DOE) Early Career Research Award (2010)\, and CU Department of Chemical and\nBiological Engineering’s outstanding undergraduate teaching award (2011) and graduate\nteaching award (2014).
URL:https://www.chimieparistech.psl.eu/evenement-agenda/seminaire-programme-gradue-chimie-psl-163/
LOCATION:ESPCI Paris\, 10 Rue Vauquelin\, Paris\, 75005\, France
CATEGORIES:Séminaire
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