Upcoming seminars

30 APR

Shedding light on micro-algae: phototaxis-induced collective phenomena By Raphaël Jeanneret - LPENS, Physics Department ENS April 30, 2024 at 11:00AM - Laboratoire Jean Perrin - Campus Jussieu - T 32-33 - 5th Floor - P533 Motile micro-algae modify their environment by absorbing light, consuming and releasing chemical compounds and generating flows. Flows, light, and chemicals in turn influence their motion. These ...

21 MAY

TBA By Wolfram Pönisch - The University of Cambridge, UK May 21, 2024 at 11:00AM - Laboratoire Jean Perrin - Campus Jussieu - T 32-33 - 5e et. - P533 TBA

28 MAY

Three-dimensional “cellular ballons” or cysts: microfluidic formation, growth, deformability, instabilities. By Pierre Nassoy - Laboratoire de Photonique Numérique et Nanosciences (LP2N) - Univ. Bordeaux - Talence May 28, 2024 at 11:00AM - Laboratoire Jean Perrin - Campus Jussieu - T 32-33 - 5th Floor - P533 Organoids are lumen-containing multicellular structures that recapitulate key features of the organs. We will first present a microfluidic technology that allows to produce them at high throughput in ...

04 JUN

TBA By Yoel Forterre - Laboratoire IUSTI, UMR 7343 CNRS, Aix Marseille University June 4, 2024 at 11:00AM - Laboratoire Jean Perrin - Campus Jussieu - T32-33, 5th Floor - P.531 Coming soon

11 JUN

TBA By Eloise Lardet June 11, 2024 at 11:00AM - Laboratoire Jean Perrin - Campus Jussieu - T 32-33 - 5th Floor - P533 Coming soon

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Previous seminars

Programmable self-assembly of nanotubes using DNA origami colloids By Daichi Hayakawa - Rogers Lab, Brandeis University April 23, 2024 at 11:00AM - Laboratoire Jean Perrin - Campus Jussieu - T 32-33 - 5th Floor - P533 Nature is replete with self-assembled materials that have one or more self-limited dimensions, including shells, tubules, and fibers. Despite significant advances in making nanometer- and ...

Internal seminar. By Angelo Charry and Maxime Deforet April 2, 2024 at 11:00AM - 5th floor seminar room - LJP - Tower 32-33 Modeling in vitro selection of binding proteins by Angelo CharryCurrently, directly measuring the physical properties of proteins, such as ligand-affinity and thermal stability, presents a challenge, ...

Mechanics and polarity in B cells By Paolo Pierobon (Institut Cochin, CNRS , Université Paris Cité) March 26, 2024 at 11:00AM - Laboratoire Jean Perrin - Campus Jussieu - T 32-33 - 5th Floor - P533 B cells serve as the primary producers of antibodies within the immune system. To elicit an effective immune response, they must recognize and internalize antigens through a specialized signaling ...

Oriented flows in biological tissues By Matthias Merkel (CPT, Marseille) March 19, 2024 at 11:00AM - salle de séminaires 5ème étage - LJP - Tour 32-33 I will talk about two project involving oriented tissue flows. 1) Most animals display one or more body axes (e.g. head-to-tail, left-right, ventral-dorsal), which usually emerge during early ...

Exploring Adaptive Collective Systems with Swarms of Learning Robots By Nicolas Bredèche (ISIR, SU) March 12, 2024 at 11:00AM - salle de séminaires 5ème étage - LJP - Tour 32-33 I will give a brief overview of the research we are conducting on using robot swarms to study adaptive collective systems in the physical world. I will focus on (1) robot swarm to study physical ...

Internal seminar By Internal Seminar: Clément Nizak, Martin Maliet March 5, 2024 at 11:00AM - 5th floor seminar room - LJP - Tower 32-33 Bacterial glass transition in Pseudomonas aeruginosa by Martin MALIETMotile bacteria self-organize in numerous collective phases, such as orientationally ordered phase or swarming state. Understanding...

TBA By Jeremy O'Byrne (LJP) January 30, 2024 at 11:00AM - salle de séminaires 5ème étage - LJP - Tour 32-33 TBA

Topology and robustness in early fate decision in the fly embryo By Arghyadip Mukherjee (ENS Paris) January 23, 2024 at 11:00AM - Salle de séminaires 5ème étage - LJP - Tours 32-33 During embryogenesis, the earliest cell fate decision is often linked to nuclear positioning, whose control arises from the integration of the cell cycle oscillator and associated cytoskeletal ...

Structured populations and other stories By Alia Abbara (EPFL) January 9, 2024 at 11:00AM - salle de séminaires 5ème étage - LJP - Tour 32-33 A classical question in population genetics is to understand the spread of a mutant with a fitness advantage in a population, in  particular its fixation probability. This question has been ...

TBA By Samuel Bell (LJP) December 19, 2023 at 11:00AM - 5th floor seminar room - LJP - Tower 32-33 TBA

Constraining the immune system dynamics with a coevolving population: the HIV, flu and microbiome cases By Andrea Mazzolini (LPENS) December 5, 2023 at 11:00AM - salle de séminaires 5ème étage - LJP - Tour 32-33 The adaptive immune system is an extremely complex machinery that continuously evolves to recognize and fight external pathogens. This chase is often made harder by the fact that pathogens also evolve...

Can we program DNA reaction-diffusion fronts with molecular motors By Nicolas Lobato-Dauzier (Laboratoire Jean Perrin, Sorbonne Université) November 28, 2023 at 11:00AM - Salle de séminaires 5ème étage - LJP - Tours 32-33 Couplings between biochemical and mechanical processes have a profound impact on embryonic development. However, in-vitro studies capable of quantifying these interactions have remained elusive. I ...

Internal Seminar By Internal Seminar: Matteo Dommanget-Kott, Jean-Christophe Galas November 21, 2023 at 11:00AM - Salle de séminaires 5ème étage - LJPe

Ecology of host and pathogen and limited predictability of evolution By Pierre Barrat-Charlaix (PoliTo) November 14, 2023 at 11:00AM - salle de séminaires 5ème étage - LJP - Tour 32-33 Seasonal influenza viruses repeatedly infect humans in part because they rapidly change their antigenic properties and evade host immune responses, necessitating frequent updates of the vaccine ...

Flexible selection of task-relevant features through population gating By Joao Barbosa (ENS Paris) November 7, 2023 at 11:00AM - Salle de séminaires 5ème étage - LJP - Tours 32-33 Brains can gracefully weed out irrelevant stimuli to guide behavior. This feat is believed to rely on a progressive selection of task-relevant stimuli across the cortical hierarchy, but the specific ...

Internal Seminar By Internal Seminar: Gaspard Junot, Georges Debregeas October 24, 2023 at 11:00AM - Salle de séminaires 5ème étage - LJP

Topological defects control morphogenesis of mesenchymal tissues in vitro By Claire Dessalles (University of Geneva, Switzerland) October 17, 2023 at 11:00AM - Salle de séminaires 5ème étage - LJP - Tours 32-33 Morphogenesis, the process by which tissues acquire their shape, hinges on a finely orchestrated collective motion of cells autonomously choreographing themselves to a well-defined final position. ...

Learning and memory in adult zebrafish: Insights from the last 10 years of research By Alexis Buatois September 26, 2023 at 11:00AM - salle de séminaires 5ème étage - LJP - Tour 32-33 Alexis Buatois (1) Institute of Neuroscience and Physiology, Department of Neurochemistry and Psychiatry, University of Gothenburg, Su Sahlgrenska, 41345, Göteborg, Sweden The zebrafish has...

Assessing the complexity of large ecological communities through the prism of disordered systems By Ada Altieri (Université Paris Cité) September 19, 2023 at 11:00AM - salle de séminaires 5ème étage - LJP - Tour 32-33 In this talk, I will address some timely questions in theoretical ecology — from configurational landscape analysis to the long-standing diversity/stability debate up to the emergence of spatial...

Bottom-up engineering of bioinspired active systems for biological activity By Isabella Guido (University of Surrey, UK) September 12, 2023 at 11:00AM - salle de séminaires 5ème étage - LJP - Tour 32-33 In nature, the self-assembly of biopolymers and motor proteins in the complex intracellular environment leads to interesting emergent behaviour that is crucial for cellular functions and motility. The...

Internal seminar By Internal Seminar: Raphaël Candelier, Samuel Bell July 4, 2023 at 11:00AM - 5th floor seminar room - LJP - Tower 32-33

Resource allocation in kinetic models of cell metabolism By Wolfram Liebermeister (INRAE Jouy-en-Josas) May 30, 2023 at 11:00AM - salle de séminaires 5ème étage - LJP - Tour 32-33 Metabolic fluxes in cells are often assumed to reflect an economical use of enzymes. To apply this principle of "minimal enzyme cost" to metabolic modelling and to study its biological consequences, I...

Internal seminar By Internal Seminar: André Estevez-Torres, Baptiste Blanc May 16, 2023 at 12:00AM - 5th floor seminar room - LJP - Tower 32-33

Motion of zoospores approaching a root By Philippe Thomen (Université Côte d’Azur) May 9, 2023 at 11:00AM - salle de séminaires 5ème étage - LJP - Tour 32-33 Phytophthora species are plant pathogens that cause considerable damage to agrosystems and ecosystems, and have a major impact on the economy. Infection occurs when their biflagellate zoospores ...

Internal seminar By Internal Seminar: Maxime Deforet, Soumaiya Imarraine April 11, 2023 at 11:00AM - 5th floor seminar room - LJP - Tower 32-33

Design principles, complexity and model selection constraining the logic in Boolean regulatory networks By Olivier C. Martin (Institut des Sciences des Plantes de Paris Saclay) April 4, 2023 at 12:00AM - Salle de séminaires 5ème étage - LJP - Tours 32-33 Numerous modelers have inferred Boolean gene regulatory networks in different biological systems, taking genes to be either on or off depending on their inputs according to associated logic rules. ...

Adding automation and reactiveness to your experiments: motivation, tools and applications to cybergenetics By Gregory Batt (Institut Pasteur, INRIA) March 28, 2023 at 11:00AM - Salle de séminaires 5ème étage - LJP - Tour 32-33 Small-scale, low-cost bioreactors are emerging as powerful tools for microbial systems and synthetic biology research. They allow tight control of cell culture parameters over long durations. These ...

Collective movements of fish in complex environments By Aurélie Dupont (LIPhy Grenoble) March 21, 2023 at 11:00AM - salle de séminaires 5ème étage - LJP - Tour 32-33 TBA

Synthetic DNA reaction-diffusion system for pattern formation, materialization, and wrinkling By Ibuki Kawamata (Tohoku University, Ochanomizu University) March 14, 2023 at 11:00AM - salle de séminaires 5ème étage - LJP - Tour 32-33 In this talk, I introduce our experimental attempts to design artificial chemical reaction-diffusion systems that mimic pattern formations and other phenomena of the early stage of biological ...

Catalysis from a physics perspective By Olivier Rivoire (ESPCI) February 14, 2023 at 11:00AM - salle de séminaires 5ème étage - LJP - Tour 32-33 Catalysis, the acceleration of chemical reactions by substances that are not changed in the process, is essential to life as well as to our industry. The physical principles underlying catalysis are ...

Physics of Behavior Across Scales By Antonio Carlos Costa (ENS Paris) January 24, 2023 at 11:00AM - Salle de séminaires 5ème étage - LJP - Tours 32-33 Recent years have seen an explosion in our ability to measure the movement dynamics of animals in naturalistic environments. However, such data poses tremendous challenges for quantitative analysis, ...

Internal seminar By Internal Seminar: Marcus Ghosh, Quentin Guigue January 10, 2023 at 11:00AM - Salle de séminaires 5ème étage - LJP - Tours 32-33

Diversity begets stability in competitive ecological communities By Matteo Smerlak (MPI Leipzig) December 13, 2022 at 11:00AM - Salle de séminaires 5ème étage, Tour 32-33 Ecological theory has grappled for fifty years with the “diversity-stability debate”. On the one hand, random matrix arguments due to Robert May imply that large, complex ecosystems cannot...

Oxygen driven spreading and microphase separation in Dictyostelium discoideum By Jean-Paul Rieu (Université Claude Bernard Lyon 1) December 6, 2022 at 11:00AM - Salle de séminaires 5ème étage - LJP - Tours 32-33 Oxygen driven spreading and microphase separation of eukaryotic cells   J.-P. Rieu1,*, A. Carrère1, N. Ghazi1, C. Anjard1, F. Detchevery1, O. Cochet-Escartin1, S. Hirose3,K. Funamoto3, ...

Internal seminar By Claude Loverdo & Mafer Seow November 29, 2022 at 11:00AM - Salle de séminaires 5ème étage - LJP - Tours 32-33 TBA

Mathematical approaches to modelling biological complexity: Inverse blebbing and tissue growth in Drosophila abdomen By Andrea Cairoli (Crick Institute) November 22, 2022 at 11:00AM - Salle de séminaires 5ème étage, Tour 32-33 Cells are the building blocks of living systems and undoubtedly fascinating entities. They move autonomously, interact among themselves and with the microenvironment, react to external perturbations, ...

Navigation in larval zebrafish: strategies and internal representations By Ruben Portugues (MPI TUM) November 15, 2022 at 10:30AM - salle 107 de l’UFR de physique, Tour 22-23 1er étage Animals navigate within their environment. To do so effectively, they may use sensory cues and/or persistent internal representations that can encode their position in space. In this talk, I will ...

Internal seminar By Nicolas Biais & Pierre Tapie October 25, 2022 at 11:00AM - Salle de séminaires 5ème étage - LJP - Tours 32-33 TBA

Collective effects in driven matter: from one-dimensional crowding to 2D melting By Alexis Poncet (ENS Lyon) October 18, 2022 at 11:00AM - Salle de séminaires 5ème étage, Tour 32-33 The theoretical description of the structure and dynamics of matter far from thermal equilibrium is at the heart of modern statistical physics. In this seminar, I will focus on two prototypical ...

Random perturbation of nanoscale copying machines By Marco Ribezzi (ESPCI Paris) October 4, 2022 at 11:00AM - Salle de séminaires 5ème étage, Tour 32-33 Statistical mechanics allows us to explain or predict how macroscopic, deterministic laws arise out of molecular chaos and has found applications in areas where emergent behaviors stem from the ...

TBA By Sharbatanu Chatterjee & Nidia Maldonado-Carmona September 20, 2022 at 11:00AM - Salle de séminaires 5ème étage, tour 32-33 TBA

HDR defense By Claude Loverdo September 5, 2022 at 02:00PM - C404 Microbes which live in hosts grow from small numbers to very large population sizes, and interact physically with their environment. Here is a summary of my biophysical modeling work, which uses a mix...

Earthquake statistical properties: an explanation for the distribution of magnitude and for the existence of aftershocks By François Petrelis (LPENS, Paris) June 28, 2022 at 11:00AM - Salle de séminaires 5ème étage - LJP - Tour 32-33 Earthquakes in nature follow several statistical properties. In particular, the distribution of energy released by an earthquake (Gutenberg-Richter's law) and the frequency of aftershocks after a ...

Active-gel Theory for Multicellular Migration in the Extra-cellular Matrix By Ram Adar (Collège de France & Institut Curie) June 21, 2022 at 11:00AM - Salle de séminaires 5ème étage, Tour 32-33 We formulate an active-gel theory for multicellular migration in the extracellular matrix (ECM). The cells are modeled as an active, polar solvent, and the ECM as a viscoelastic solid. Our ...

TBA By Andrea Cairoli (Crick Institute London) June 14, 2022 at 12:00AM - Salle de séminaires 5ème étage - LJP - Tour 32-33 TBA