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X-WR-CALNAME:Chimie ParisTech - PSL
X-ORIGINAL-URL:https://www.chimieparistech.psl.eu
X-WR-CALDESC:Évènements pour Chimie ParisTech - PSL
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220601T110000
DTEND;TZID=Europe/Paris:20220601T120000
DTSTAMP:20220601T121537Z
CREATED:20220601T121426Z
LAST-MODIFIED:20220601T121537Z
UID:23232-1654081200-1654084800@www.chimieparistech.psl.eu
SUMMARY:Séminaire Programme Gradué Chimie PSL
DESCRIPTION:Storing Texts\, Images and Secure Data in Polymers\nPr. Jean-François Lutz\, Université de Strasbourg\, CNRS\, Institut Charles Sadron UPR22\, 23 rue du Loess\, 67034 Strasbourg Cedex 2\, France. \nE-mail: jflutz@unistra.fr \nWhere : ENS Biology Dpt\, Salle Favard \n  \nDr. Jean-François Lutz is CNRS research director and deputy director of the Institut Charles Sadron located in Strasbourg\, France. He received his doctoral degree from the University of Montpellier II in 2000 and his habilitation degree from the University of Potsdam in 2009. Before joining the CNRS\, he was post-doctoral fellow at Carnegie Mellon University (2001-2003) and afterwards leader of the research group Nanotechnology for Life Science at the Fraunhofer Institute for Applied Polymer Research (2003-2010). His current research interests include the synthesis of sequence-controlled polymers\, the design of digital polymers and the hybridization of sequence-defined macromolecules. He is author of over 200 publications including 10 patents and is listed since 2015 as an ISI Highly Cited Researcher (Clarivate Analytics) in the category Chemistry. Among several other awards\, he has received in 2018 the Silver Medal of the French CNRS. \n  \nIt has been shown in recent years that information can be stored at the molecular level in synthetic polymers [1\, 2]. To achieve such a property\, different comonomers are used as a molecular alphabet and assembled together into a defined information sequence. For instance\, an alphabet based on two different monomers allows writing of binary information in a linear polymer chain.3 But of course such digital polymers cannot be synthesized using a standard chain-growth or step-growth polymerization mechanisms because these approaches lead to polydisperse samples containing pronounced sequence defects. Instead\, so-called multi-step growth strategies have to be employed [4]. For instance\, solid-phase iterative chemistry allows synthesis of a wide variety of uniform sequence-defined digital polymers [3\, 4]. This approach is not restricted to oligomers and long digital chains containing more than 100 coded residues have been prepared [5]. Moreover\, the information stored in these chains can be easily decoded by tandem mass spectrometry. As shown very recently\, not only short but also long digital sequences can be deciphered using this analytical technique [6]. Furthermore\, the information stored in the chains can be edited using physical triggers such as temperature or light [7]. \nSince multi-byte digital encryption and decryption of a synthetic polymer chain has now been clearly demonstrated\, the next important challenge in this emerging field of research will be the application of such digital polymers in technological areas; for example for the development of molecular memories. However\, such applications are quite demanding and imply to move from simple proofs-of-concept at the single-chain level to complex multi-chain libraries allowing storage and manipulation of larger amounts of information. In this lecture\, I will highlight new directions that are currently under investigation in my laboratory for the development of such complex “coded matter”. In particular\, I will describe simple strategies for the preparation of polymer materials allowing high-density information storage. Specific emphasis will be put on the development of planar digital micro-arrays as well as on the three-dimensional organization of digital polymers [8]. \nReferences \n[1]         Lutz\, J.-F.; Ouchi\, M.; Liu\, D. R.; Sawamoto\, M. Science\, 2013\, Vol 341\, 1238149.\n[2]         Colquhoun\, H.; Lutz\, J.-F. Nat. Chem.\, 2014\, Vol 6\, 455-456.\n[3]         Roy\, R. K.; Meszynska\, A.; Laure\, C.; Charles\, L.; Verchin\, C.; Lutz\, J.-F. Nat. Commun.\, 2015\, Vol 6\, 7237.\n[4]         Lutz\, J.-F.; Lehn\, J.-M.; Meijer\, E. W.; Matyjaszewski\, K. Nat. Rev. Mater.\, 2016\, Vol 1\, 16024.\n[5]         Al Ouahabi\, A.; Kotera\, M.; Charles\, L.; Lutz\, J.-F. ACS Macro Lett.\, 2015\, Vol 4\, 1077-1080.\n[6]         Al Ouahabi\, A.; Amalian\, J.-A.; Charles\, L.; Lutz\, J.-F. Nat. Commun.\, 2017\, Vol 8\, 967.\n[7]         König\, N. F.; Al Ouahabi\, A.; Oswald\, L.; Szweda\, R.; Charles\, L.; Lutz\, J.-F. Nat. Commun.\, 2019\, Vol 10\, 3774.\n[8]         Szweda\, R.; Tschopp\, M.; Felix\, O.; Decher\, G.; Lutz\, J.-F. Angew. Chem.\, Int. Ed.\, 2018\, Vol 57\, 15817-15821.
URL:https://www.chimieparistech.psl.eu/evenement-agenda/seminaire-programme-gradue-chimie-psl-84/
LOCATION:ENS\, 24 rue Lhomond\, Paris\, 75005
CATEGORIES:Séminaire
ATTACH;FMTTYPE=image/png:https://www.chimieparistech.psl.eu/wp-content/uploads/2020/06/chimie1.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220601T110000
DTEND;TZID=Europe/Paris:20220601T123000
DTSTAMP:20220504T153034Z
CREATED:20220504T153034Z
LAST-MODIFIED:20220504T153034Z
UID:23162-1654081200-1654086600@www.chimieparistech.psl.eu
SUMMARY:Colloques Programme Gradué Chimie PSL
DESCRIPTION:Lectures\nLes 17\, 24 mai et 1er\, 7 juin 2022\nInteractions of Light with Gold\n(and Other Metals)\nConférences en anglais – de 11h00 à 12h30 – Salle 2\nPass sanitaire requis\, port du masque obligatoire. \nmercredi 1er juin \nComposite Plasmonic Nanomaterials:\nProspects in Biosensing and Catalysis\nCliquez-ici pour accéder à toutes les informations !
URL:https://www.chimieparistech.psl.eu/evenement-agenda/colloques-programme-gradue-chimie-psl-3/
LOCATION:Collège de France\, 11\, place Marcelin-Berthelot\, Paris\, Ile de France\, 75005\, France
CATEGORIES:Colloque
ATTACH;FMTTYPE=image/png:https://www.chimieparistech.psl.eu/wp-content/uploads/2020/06/chimie1.png
ORGANIZER;CN="Luis M. Liz-Marz%C3%A1n":MAILTO:e-mail: llizmarzan@cicbiomagune.es
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220601T140000
DTEND;TZID=Europe/Paris:20220601T150000
DTSTAMP:20220601T122235Z
CREATED:20220601T122235Z
LAST-MODIFIED:20220601T122235Z
UID:23237-1654092000-1654095600@www.chimieparistech.psl.eu
SUMMARY:Séminaire Programme Gradué Chimie PSL
DESCRIPTION: \n\n\n\nChiral phonons in quantum materials\nGaël Grissonnanche\, Laboratory of Atomic and Solid State Physics\, Cornell University\, Ithaca\, NY\, USA\n\n\n \nWhere : Hybrid format\n\n\n\nRoom Charpak\, Entrance Building\, ground floor \nZoom link: https://espci.zoom.us/j/88349618317?pwd=aXcrQ3RVaFpWMlA3Wk0yRHlsdy94Zz09\nID: 883 4961 8317\nPassword: B.Pascal\n\n\n\n\n \n\nLaboratory of Atomic and Solid State Physics\, Cornell University\, Ithaca\, NY\, USA and Kavli Institute at Cornell for Nanoscale Science\, Ithaca\, NY\, USA\nThe thermal Hall effect has been proposed as a powerful tool to probe exotic topological excitations in quantum spin liquids\, with the spectacular report of a half-quantized thermal Hall effect in the Kitaev material α-RuCl3[1\,2]. These results hold much promise for quantum computing. \nHowever\, it is becoming surprisingly apparent that phonons can also produce a large thermal Hall effect across a wide range of quantum materials\, from cuprate superconductors [3\,4] to the titanates [5] and frustrated magnets [6]. A significant phonon Hall effect is also suspected in α-RuCl3 [7\, 8]. While phonons carry no charge and are common low energy excitations in solids\, the origin of the handedness that gives rise to a phonon Hall effect in a magnetic field remains an enigma. Besides\, the present ubiquity of the phonon Hall effect calls for caution when interpreting the results of quantum spin liquids candidates.\nDuring the talk\, I will share the signatures of the thermal Hall effect of phonons and how we came to discover it; why this is interesting\, and how we can learn about quantum materials through this journey of serendipitous discoveries. By the end of the presentation\, I hope to convince you that the thermal Hall effect is a technique that needs to be more fully/carefully exploited experimentally and the phonon Hall effect a property that needs to be better understood theoretically.\nReferences\n[1] Kasahara et al.\, Nature 559\, 277 (2018)\n[2] Yokoi et al.\, Science 373\, 6554 (2021)\n[3] Grissonnanche et al.\, Nature 571\, 376 (2019)\n[4] Grissonnanche et al.\, Nat. Phys. 16\, 1108 (2020)\n[5] Li et al.\, PRL 105\, 225901 (2020)\n[6] Hirokane et al. PRB 99\, 134419 (2019)\n[7] Hentrich et al. PRB 99\, 085136 (2019)\n\n\n\n\n[8] Lefrançois et al. PRX 12\, 0021025 (2022)
URL:https://www.chimieparistech.psl.eu/evenement-agenda/seminaire-programme-gradue-chimie-psl-85/
LOCATION:ESPCI Paris\, 10 Rue Vauquelin\, Paris\, 75005\, France
CATEGORIES:Séminaire
ATTACH;FMTTYPE=image/png:https://www.chimieparistech.psl.eu/wp-content/uploads/2020/06/chimie1.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220607T110000
DTEND;TZID=Europe/Paris:20220607T123000
DTSTAMP:20220504T153255Z
CREATED:20220504T153255Z
LAST-MODIFIED:20220504T153255Z
UID:23164-1654599600-1654605000@www.chimieparistech.psl.eu
SUMMARY:Colloques Programme Gradué Chimie PSL
DESCRIPTION:Lectures\nLes 17\, 24 mai et 1er\, 7 juin 2022\nInteractions of Light with Gold\n(and Other Metals)\nConférences en anglais – de 11h00 à 12h30 – Salle 2\nPass sanitaire requis\, port du masque obligatoire. \nmardi 7 juin \nIntegration of Nanoparticles into Complex\nSensors for Diagnosis and Biodetection\nCliquez-ici pour accéder à toutes les informations !
URL:https://www.chimieparistech.psl.eu/evenement-agenda/colloques-programme-gradue-chimie-psl-4/
LOCATION:Collège de France\, 11\, place Marcelin-Berthelot\, Paris\, Ile de France\, 75005\, France
CATEGORIES:Colloque
ATTACH;FMTTYPE=image/png:https://www.chimieparistech.psl.eu/wp-content/uploads/2020/06/chimie1.png
ORGANIZER;CN="Luis M. Liz-Marz%C3%A1n":MAILTO:e-mail: llizmarzan@cicbiomagune.es
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220613T113000
DTEND;TZID=Europe/Paris:20220613T123000
DTSTAMP:20220609T104829Z
CREATED:20220609T104752Z
LAST-MODIFIED:20220609T104829Z
UID:23250-1655119800-1655123400@www.chimieparistech.psl.eu
SUMMARY:Séminaire Programme Gradué Chimie PSL
DESCRIPTION:On the biophysics of plant morphogenesis\n \nArezki Boudaoud\, Ecole Polytechnique\n \nWhat sets the size and form of organisms is still\, by large\, an open question. During this talk\, I will aim at a broad audience and illustrate how are addressing this question by using biophysical experiments and models applied to plant morphogenesis. On the one hand\, measurements of cell internal pressure support an analogy between plant tissues and liquid foams. On the other hand\, models suggest long-range correlations in growing tissues. This prompted us to analyse the spectra of fluctuations in growing tissues\, developing a novel approach that is applicable to geometrically disordered materials. Finally\, I will briefly present how we are using microfluidic approaches to investigate variability in morphogenesis between individual plants.\n \nThe seminar will be in hybrid format and the connection details are\nhttps://us02web.zoom.us/j/83595816412?pwd=Q1VNbEdPcFMvNm9rSkpXRFRSZmlTUT09\nID de réunion : 835 9581 6412\nCode secret : 399084
URL:https://www.chimieparistech.psl.eu/evenement-agenda/seminaire-programme-gradue-chimie-psl-86/
LOCATION:Visioconférence
CATEGORIES:Séminaire
ATTACH;FMTTYPE=image/png:https://www.chimieparistech.psl.eu/wp-content/uploads/2020/06/chimie1.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220616T140000
DTEND;TZID=Europe/Paris:20220616T150000
DTSTAMP:20220614T121021Z
CREATED:20220614T120409Z
LAST-MODIFIED:20220614T121021Z
UID:23280-1655388000-1655391600@www.chimieparistech.psl.eu
SUMMARY:Séminaire Programme Gradué Chimie PSL
DESCRIPTION: \n\n\n\nAI-enhanced detection of Fractal Electronic Textures in Vanadium Dioxide \nBy Prof. Erica W. Carlson\, Purdue University \nWhere : The seminar will take place in a hybrid format at ESPCI\, Room Cellule\, building C\, 3rd floor. \n\n\n\n\nPhases of matter and phase transitions are central concepts in condensed matter physics.  From the liquid crystal displays of our computer screens\, to the foams of bread and shaving cream\, the suspension we know as milk\, and the granular matter known as peanut butter\, phases beyond the simple solid/liquid/gas permeate our lives.  Electrons inside of materials have their own phases of matter and phase transitions\, such as magnet\, semiconductor\, metal\, and many other exotic phases of electrons.  Spatially resolved surface probes have recently revealed rich electronic textures at the nanoscale and mesoscale in many quantum materials.  We have defined new conceptual frameworks for interpreting and understanding these multiscale electronic textures by employing theoretical tools from fractal mathematics and disordered statistical mechanics. This allows us to use the rich spatial information available from scanning probes in order to diagnose criticality from the spatial structure alone\, without the need of a sweep of temperature or external field.  These new methods have enabled the discovery of universal\, fractal electronic textures across a variety of quantum materials. [Nat. Commun. 10\, 4568 (2019);  PRL 116\, 036401 (2016); Nat. Commun. 3\, 915 (2012).] I will discuss the application of these ideas to the  Mott metal-insulator transition in quantum materials\, using new extensions of critical behavior as well as new tools in machine learning. \nZoom link: https://espci.zoom.us/j/83311432739?pwd=L0ZnU08rRmRGdjRaMGRTY3NuaUhOdz09\nID: 833 1143 2739\nPassword: Hans_Bethe\nContact/to subscribe or unsubscribe: seminaires-lpem@espci.fr
URL:https://www.chimieparistech.psl.eu/evenement-agenda/seminaire-programme-gradue-chimie-psl-87/
LOCATION:ESPCI Paris\, 10 Rue Vauquelin\, Paris\, 75005\, France
CATEGORIES:Séminaire
ATTACH;FMTTYPE=image/png:https://www.chimieparistech.psl.eu/wp-content/uploads/2020/06/chimie1.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220616T140000
DTEND;TZID=Europe/Paris:20220616T150000
DTSTAMP:20220614T120901Z
CREATED:20220614T120901Z
LAST-MODIFIED:20220614T120901Z
UID:23283-1655388000-1655391600@www.chimieparistech.psl.eu
SUMMARY:Séminaire Programme Gradué Chimie PSL
DESCRIPTION:Freezing contact line\n \nThomas Séon\, Institut d’Alembert\n \nWhere : The seminar will take place in a hybrid format at ESPCI\, Amphi Charpak\n \nIce accretion on airplane\, wire or roadway\, formation of ice fall\, ice stalactite\, frozen river or aufeis\, are a few examples of ice structures formed by the solidification of capillary flows (drop\, rivulet\, film). Among the many scientific questions that remain open to understand these problems\, the effect of freezing on the contact line motion is undoubtedly one of the most important and mysterious. In this talk\, we experimentally investigate three situations where advancing and receding contact line is coupled to freezing : capillary and inertial spreading of a water droplet on a cold substrate and water film dewetting on its own ice. These configurations allow us to propose the main mechanisms that explain the arrest of a contact line due to solidification and to tackle the intricate problem of the wetting of water on ice.\n \nZoom link: https://espci.zoom.us/j/84686787154?pwd=NEVRME1DRDJwWmFJSVVMZEFmZlJldz09
URL:https://www.chimieparistech.psl.eu/evenement-agenda/seminaire-programme-gradue-chimie-psl-88/
LOCATION:ESPCI Paris\, 10 Rue Vauquelin\, Paris\, 75005\, France
CATEGORIES:Séminaire
ATTACH;FMTTYPE=image/png:https://www.chimieparistech.psl.eu/wp-content/uploads/2020/06/chimie1.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220620T080000
DTEND;TZID=Europe/Paris:20220715T170000
DTSTAMP:20220620T075455Z
CREATED:20220620T075455Z
LAST-MODIFIED:20220620T075455Z
UID:23296-1655712000-1657904400@www.chimieparistech.psl.eu
SUMMARY:Oraux du CCMP
DESCRIPTION:
URL:https://www.chimieparistech.psl.eu/evenement-agenda/oraux-du-ccmp/
LOCATION:Chimie ParisTech – PSL\, 11\, rue Pierre et Marie Curie\, Paris\, 75005\, France
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220623T080000
DTEND;TZID=Europe/Paris:20220623T180000
DTSTAMP:20220622T180916Z
CREATED:20220622T180916Z
LAST-MODIFIED:20220622T180916Z
UID:23306-1655971200-1656007200@www.chimieparistech.psl.eu
SUMMARY:# IWED22 Journée Internationale des femmes ingénieures
DESCRIPTION:
URL:https://www.chimieparistech.psl.eu/evenement-agenda/iwed22-journee-internationale-des-femmes-ingenieures/
CATEGORIES:Evénement
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220624T110000
DTEND;TZID=Europe/Paris:20220624T130000
DTSTAMP:20220622T131024Z
CREATED:20220622T130554Z
LAST-MODIFIED:20220622T131024Z
UID:23298-1656068400-1656075600@www.chimieparistech.psl.eu
SUMMARY:Séminaire Programme Gradué Chimie PSL
DESCRIPTION:https://espci.zoom.us/j/88400420441 \nTitle : Sustainable Metal-catalysed Synthesis of Heterocycles\nMaria Manuel B. Marques\, NOVA School of Science and Technology\, Portugal\nAbstract :\nAzaindoles are bioisosteres of the indole nucleus\, a privileged structure\, which have enticed the interest of the scientific\ncommunity for their physicochemical and pharmacological properties. Azaindoles are rare in nature and highly interesting\nin medicinal chemistry and drug discovery programs. This is mainly due to the fact that its solubility\, lipophilicity\, target\nbinding and ADME-tox properties can be modulated and tuned\, constituting an enormous advantage over other\nheterocyclic compounds.1 However\, synthesis of azaindoles is challenging. The electron-deficient nature of the pyridine\nring alters the electronic properties of the conjugated system in such a way that many classic indole synthetic methods\nare not as e􀀀cient or simply do not work. Due to their important value\, we have developed methods for the synthesis of\nazaindoles\, relying on palladium-catalyzed cross-coupling reactions and developed different practical approaches\ncompatible with all azaindole isomers.2\,3 Our group has been focused on metal-catalyzed cross-coupling reactions for the\nstraightforward synthesis of azaindoles from commercially available aminopyridines. In particular\, we have been\nexploring Pd-catalysed one-pot methodologies such as the C-N cross-coupling/Heck reaction4 also with Pdnanocatalysts;\n5 the N-arlyation/Sonogashira/cyclization reaction;6 and Pd-catalysed C-N cross-coupling/C-H\nfunctionalization.7 Herein we will present our latest achievements on the one-pot reactions\, and simple protocols towards\nnot easy to make heterocycles.
URL:https://www.chimieparistech.psl.eu/evenement-agenda/seminaire-programme-gradue-chimie-psl-89/
LOCATION:A distance / En ligne
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220627T113000
DTEND;TZID=Europe/Paris:20220627T140000
DTSTAMP:20220622T180615Z
CREATED:20220622T180444Z
LAST-MODIFIED:20220622T180615Z
UID:23303-1656329400-1656338400@www.chimieparistech.psl.eu
SUMMARY:Séminaire Programme Gradué Chimie PSL
DESCRIPTION:The seminar will be in hybrid format and the connection details are : \n\nhttps://us02web.zoom.us/j/83595816412?pwd=Q1VNbEdPcFMvNm9rSkpXRFRSZmlTUT09\n\nID de réunion : 835 9581 6412\nCode secret : 399084\n \nNext Monday at 11:30\, we will have the pleasure to listen to Thomas Machon (Bristol University) who will talk about the contact geometry in cholesterics and chiral materials . You will find the abstract below.\n \nChirality in materials\, such as liquid crystals\, often entails a high degree of frustration\, leading to a rich array of morphological phenomena. Here I will discuss how methods from contact geometry and topology can be used to give a qualitative understanding of the behaviour of chiral materials. Using experiments on cylindrically confined lyotropic chromonic liquid crystals as a model system\, I will show how contact topology-theoretic methods lead to a topological description of the various metastable minima in the energy landscape\, as well as explaining the existence of novel chirally-protected solitons. I will further show how the same perspective can be used to understand the structural stability of highly-twisted Skyrmions in chiral ferromagnets\, with applications to racetrack memory devices. Finally\, I will present the results of transition path sampling calculations describing generic features of chiral morphological transitions in liquid crystalline systems.\n\n\n\n\n\n\n\n\n\n\n\n \n 
URL:https://www.chimieparistech.psl.eu/evenement-agenda/seminaire-programme-gradue-chimie-psl-91/
LOCATION:A distance / En ligne
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220630T140000
DTEND;TZID=Europe/Paris:20220630T150000
DTSTAMP:20220629T113920Z
CREATED:20220622T131300Z
LAST-MODIFIED:20220629T113920Z
UID:23301-1656597600-1656601200@www.chimieparistech.psl.eu
SUMMARY:Séminaire Programme Gradué Chimie PSL
DESCRIPTION:Microfluidic osmotic compression of charge-stabilized colloidal dispersions: Equations of state and collective diffusion coefficients.\nAnnick Hallez\, Laboratoire de Génie Chimique\, Université de Toulouse. \nWhere : ESPCI\, Amphi Holweck. \nUsing a model coupling mass transport and liquid theory calculations for a charge-stabilized colloidal dispersion\, it is possible to show that diffusion significantly limits measurement times of equations of state (EOS)\, osmotic pressure vs composition\, using the osmotic compression technique. Following this result\, a microfluidic chip allowing one to measure the entire EOS of a charged dispersion at the nanoliter scale in a few hours is presented\, with precisely controlled pH and chemical potential of ions. It can be achieved by trapping a drop of colloidal suspension close to a semi-permeable membrane synthesized inside the chip\, and acting as a dialysis bag. We also show that time-resolved analyses of relaxation to equilibrium in this microfluidic experiment lead to direct estimates of the collective diffusion coefficient of the dispersion in Donnan equilibrium with a salt reservoir. The microfluidic chip acting as a “chemostat”\, it becomes possible to impose ramps of pH or salt chemical potential to the dispersion and to measure the dependence of the EOS (or a phase diagram) on these parameters easily. With an adequate model for electrostatic interactions\, inferring the charge regulation mechanisms at the surface of colloids in concentrated dispersions then becomes possible.
URL:https://www.chimieparistech.psl.eu/evenement-agenda/seminaire-programme-gradue-chimie-psl-90/
LOCATION:ESPCI Paris\, 10 Rue Vauquelin\, Paris\, 75005\, France
CATEGORIES:Séminaire
ATTACH;FMTTYPE=image/png:https://www.chimieparistech.psl.eu/wp-content/uploads/2020/06/chimie1.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220630T140000
DTEND;TZID=Europe/Paris:20220630T150000
DTSTAMP:20220629T113324Z
CREATED:20220629T110233Z
LAST-MODIFIED:20220629T113324Z
UID:23318-1656597600-1656601200@www.chimieparistech.psl.eu
SUMMARY:Séminaire Programme Gradué Chimie PSL
DESCRIPTION:From nanocrystals to earthquakes: Universal avalanche statistics across 12 decades in length?\n  \nKarin Dahmen\, Department of Physics\, University of Illinois at Urbana Champaign \nSlowly-compressed nano-crystals\, bulk metallic glasses\, high entropy alloys\, rocks\, granular materials\, and the earth all deform via intermittent slips or “quakes”. We find that although these systems span 12 decades in length scale\, they all show the same scaling behavior for their slip size distributions and other statistical properties. Remarkably\, the size distributions follow the same power law multiplied with the same exponential cutoff. The cutoff grows with applied force for materials spanning length scales from nanometers to kilometers\, indicating an underlying nonequilibrium phase transition. A simple mean field model for avalanches of slipping weak spots explains the agreement across scales. It predicts the observed slip-size distributions and the observed stress-dependent cutoff function. The analysis draws on tools from statistical physics and the renormalization group. The results enable extrapolations from one scale to another\, and from one force to another\, across different materials and structures\, from nanocrystals to earthquakes. Connections to neuron avalanches in the brain will also be discussed. \nWhere : \n\nESPCI Room Boreau\, building C\, 2nd floor\nZoom link: https://espci.zoom.us/j/87125746129?pwd=T2dxZnB5Z3dNaFNGY0lrVVdyVThVZz09\nID: 871 2574 6129\nPassword: G.Charpak\n\nContact/to subscribe or unsubscribe: seminaires-lpem@espci.fr
URL:https://www.chimieparistech.psl.eu/evenement-agenda/seminaire-programme-gradue-chimie-psl-93/
LOCATION:ESPCI Paris\, 10 Rue Vauquelin\, Paris\, 75005\, France
CATEGORIES:Séminaire
ATTACH;FMTTYPE=image/png:https://www.chimieparistech.psl.eu/wp-content/uploads/2020/06/chimie1.png
ORGANIZER;CN="Karin Dahmen":MAILTO:dahmen@illinois.edu
END:VEVENT
END:VCALENDAR