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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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TZID:Europe/Paris
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20211029
DTEND;VALUE=DATE:20211116
DTSTAMP:20211029T091234Z
CREATED:20211029T091234Z
LAST-MODIFIED:20211029T091234Z
UID:22495-1635465600-1637020799@www.chimieparistech.psl.eu
SUMMARY:Rappel : Inscriptions Workshop
DESCRIPTION:Inscrivez-vous avant le 15 novembre \nDans le cadre de la chaire Saint-Gobain/ESPCI\, nous organisons conjointement\, avec Saint-Gobain\, un workshop le mercredi 8 décembre sur « La mécanique des surfaces et interfaces » en amphi Holweck à l’ESPCI Paris . \nIl y aura 10 présentations couvrants des domaines tels que l’acoustique\, la stabilité des couches minces par voie liquide\, les polymères et les techniques de caractérisations pour les surfaces et interfaces. \nVous trouverez le programme ici \nCe workshop est ouvert à tous mais avec un nombre limité de places. Si vous souhaitez y participer\, je vous demanderais donc de vous inscrire avant le 15 novembre à l’adresse workshop-sgespci@espci.fr\, en y indiquant si vous serez présent le matin/le midi/l’après midi.
URL:https://www.chimieparistech.psl.eu/evenement-agenda/rappel-inscriptions-workshop-2/
CATEGORIES:Evénement
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20211110T153000
DTEND;TZID=Europe/Paris:20211110T163000
DTSTAMP:20211108T150413Z
CREATED:20211108T150413Z
LAST-MODIFIED:20211108T150413Z
UID:22569-1636558200-1636561800@www.chimieparistech.psl.eu
SUMMARY:Séminaire Programme Gradué Chimie PSL
DESCRIPTION:Experimental-computational design of protein-based materials\n \nDiego Lopez Barreiro (Delft University)\nhttps://dlopezbarreiro.github.io/\n \nExceptional SIMM seminar on Wednesday the 10th of November at 3.30pm in the amphi Boreau\n\n\nEngineers and scientists are increasingly working with Nature’s structural proteins\, such as silk\, elastin\, or collagen\, to synthesise multifunctional materials for applications in biomedicine\, biosensing\, renewable energy\, or infrastructure\, to name a few. This is due to their natural abundance\, biocompatibility\, controllable nanostructure\, multi-stimuli responsiveness\, and tuneable structural\, mechanical\, or optical properties. Nonetheless\, revolutions in bioprocess engineering\, and molecular and synthetic biology\, are making it increasingly accessible to design new protein polymers and produce them via microbial fermentations.\nThus\, we can create novel protein polymers with optimized sequences with preprogrammed physicochemical or biological properties. The development of these materials can be greatly accelerated by computational modelling\, namely molecular dynamics simulations. Using these computational tools\, we can predict the effect of protein polymer features (i.e.\, sequence\, chain length) or processing conditions (i.e.\, temperature\, pH\, solvent) on the properties of the resulting materials\, avoiding costly experimental iterations to determine fabrication parameters. In this talk\, Diego López Barreiro will present a combined experimental-computational approach for the manufacture of multifunctional protein-based materials. He will showcase examples of how this approach can be applied to natural and\nrecombinant silk and silk-elastin biopolymers\, in combination with additives like biobased carbons\, carbon nanoparticles\, or biomineralized silica nanoparticles.
URL:https://www.chimieparistech.psl.eu/evenement-agenda/seminaire-programme-gradue-chimie-psl-57/
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
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20211122T113000
DTEND;TZID=Europe/Paris:20211122T123000
DTSTAMP:20211117T144812Z
CREATED:20211117T144812Z
LAST-MODIFIED:20211117T144812Z
UID:22607-1637580600-1637584200@www.chimieparistech.psl.eu
SUMMARY:Séminaire Programme Gradué Chimie PSL
DESCRIPTION:Toward a molecular picture of some key phenomena involved in the emergence of life: from thermophoresis to enzyme thermal adaptation\nGuillaume Stirnemann (CNRS\, Laboratoire de Biochimie Théorique) \n\n\n\n\n\n\n\n\nThe emergence of life is one of the most fascinating and yet largely unsolved questions in the natural sciences\, and thus a significant challenge for scientists from many disciplines. I will present some of our recent results that specifically address two major issues using a computational approach that relies on techniques ranging from quantum calculations to large-scale all-atom simulations\, employed together with efficient enhanced-sampling algorithms. \nIn the first part\, I will discuss our recent investigation of the poorly-understood thermally-driven process of thermophoresis\, which was shown to be an efficient process for the accumulation of dilute precursors in the absence of biological compartments. I will show how our molecular simulations and calculations can shed light on the molecular mechanisms associated with thermodiffusion.  \nIn the second part\, I will discuss our recent investigations of the enzyme thermal adaptation. There is increasing experimental evidence that it involves complex changes in both structural and reactive properties. I will show how we can obtain a quantitative molecular description of the stability and catalytic activity shifts between homologs using molecular simulations and modelling. We eventually propose a general model that provides a molecular       explanation of changes in optimum temperatures for other enzymes. \nThe seminar will be hybrid and the non-members of the lab can attend at the zoom link: \n*Remote connection details*\nhttps://us02web.zoom.us/j/83595816412?pwd=Q1VNbEdPcFMvNm9rSkpXRFRSZmlTUT09\nMeeting ID: 835 9581 6412\nPasscode: 399084
URL:https://www.chimieparistech.psl.eu/evenement-agenda/seminaire-programme-gradue-chimie-psl-60/
LOCATION:ESPCI Paris\, 10 Rue Vauquelin\, Paris\, 75005\, France
CATEGORIES:Séminaire
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20211129T113000
DTEND;TZID=Europe/Paris:20211129T123000
DTSTAMP:20211129T104615Z
CREATED:20211129T104615Z
LAST-MODIFIED:20211129T104615Z
UID:22642-1638185400-1638189000@www.chimieparistech.psl.eu
SUMMARY:Séminaire Programme Gradué Chimie PSL
DESCRIPTION:Extreme deformation of soft matter: tuning colloidal gel microstructure with ultrasound and microbubbles\nValeria Garbin\, TU Delft \n\n\n\n\n\n\nControlling the microstructure of soft materials is essential to impart properties for advanced applications\, for instance to obtain acoustic or photonic metamaterials\, or by modifying their mechanical response. Imposing a steady or oscillatory shear during the manufacturing process is one of the preferred pathways to control the orientation\, structure or mechanical properties of a wide range of microstructured materials. Colloidal gels are a broad class of industrially relevant and highly tunable soft materials\, for instance in the paint and coatings industry. These microstructured materials are sensitive to shear due to their out-of-equilibrium kinetic arrest and undergo a transition from hexagonal to cubic ordering under simple\, homogeneous\, oscillatory shear. The impact of a heterogeneous shear or extensional deformation on these systems\, despite being the norm in industrial processes\, remains however largely unexplored. We use a gas inclusion (i.e.\, a bubble)\, activated by ultrasound at 10-100 kHz to locally and periodically strain a depletion colloidal gel at high frequency. The strain field applied by the bubble is in this case predominantly extensional and localised; the strain decreases as a power law away from the bubble. We monitor the microstructure of the gel under a confocal microscope close to the bubble before and after the acoustic excitation\, and we are able to visualize some features of the flowing gel using high-speed\, brightfield video microscopy. We find that the oscillations induce local rearrangements with striking patterns\, which we quantify using structural indicators. The observed\, irreversible rearrangements demonstrate the potential for controlling the microstructure of a colloidal-gel material locally and with a remote acoustic trigger. \n**************************** \n \n\nRemote connection details\n\nhttps://us02web.zoom.us/j/83595816412?pwd=Q1VNbEdPcFMvNm9rSkpXRFRSZmlTUT09\n \nMeeting ID: 835 9581 6412\nPasscode: 399084
URL:https://www.chimieparistech.psl.eu/evenement-agenda/seminaire-programme-gradue-chimie-psl-62/
LOCATION:Visioconférence
CATEGORIES:Séminaire
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