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Home > Research > Talks & Conferences > Talks Given at LIPhy

Invited Talks

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These talks are given by invited speakers at LIPhy. The intended audience is the whole LIPhy. A large general introduction intended for non-specialist is usually provided.

Typical talk duration is around one hour and includes about 15 mn of questions. The talks are scheduled usually every monday at 2PM. The place is at the conference room, second floor. Access to the lab can be obtained through the secretaries.

Agenda

  • Monday 21 January 14:00-15:30 - Sébastien Michelin - LadHyX -- Ecole Polytechnique Palaiseau

    Life & death of microscopic gas bubbles

    Résumé : Microscopic gas bubbles grow or shrink depending on the relative saturation of their environment in dissolved gas species. This process can be seen as a coupled problem between the dissolved gas diffusion and the viscous flow around the bubble. This presentation will present some of our recent modeling work on the dynamics of growth or dissolution of microscopic gas bubbles in crowded or confined environments.
    The dissolution of a single gas bubble in an undersaturated environment is a classical problem which leads to bubble collapse in finite time. The presence of other bubbles slows this process down. Using a simplified analytical framework, the dissolution patterns are analysed for bubble lattices of different dimensions.
    Confinement also plays a key role: the growth of a confined gas bubble is in fact at the heart of several designs of artificial micro swimmers, so-called micro-rockets, which motivate the second part of the presentation, dedicated to the growth of a microscopic bubble near a wall. In particular, I will discuss how the physical properties of the bubble surface can significantly influence the drainage dynamics of the lubrication film.



    contact: Benjamin Dollet

    Lieu : LIPhy, conference room - 140 Avenue de la Physique 38402 Saint Martin d’Hères


  • Monday 28 January 14:00-15:30 - Mohamed Quafafou - Aix Marseille University

    On Perception and Accessibility

    Résumé :



    contact: Chaouqi Misbah

    Lieu : LIPhy, conference room - 140 Avenue de la Physique 38402 Saint Martin d’Hères


  • Monday 4 February 14:00-15:30 - Boris THIBERT - Laboratoire Jean Kuntzmann, Université Grenoble Alpes

    Mirror and Lens Design for Nonimaging Optics

    Résumé : Nonimaging optics is a field of optics where one is interested in the transfer of light energy between a source and a target. Unlike traditional optics, or imaging-optics, the goal is not to reproduce an image of the input light, but to design optical components that transfer a given source light to a prescribed target light.
    In this talk, I show how the optimal transport theory can be used to design a different kinds of optical components that allow to transfer any punctual or collimated source to any target. I will also present fabricated mirrors and lenses.



    contact: Erik Kerstel

    Lieu : LIPhy, conference room - 140 Avenue de la Physique 38402 Saint Martin d’Hères


  • Monday 18 February 14:00-15:30 - Remy Colin

    LIPHY Seminar

    Résumé :



    contact: Philippe Peyla

    Lieu : LIPhy, conference room - 140 Avenue de la Physique 38402 Saint Martin d’Hères


  • Monday 11 March 14:00-15:30 - Maxim Dolgushev

    LIPHY Seminar

    Résumé :



    contact: Chaouqi Misbah

    Lieu : LIPhy, conference room - 140 Avenue de la Physique 38402 Saint Martin d’Hères


  • Monday 1 April 14:00-15:30 - Christophe Raufaste

    LIPHY Seminar

    Résumé :



    contact: Benjamin Dollet

    Lieu : LIPhy, conference room - 140 Avenue de la Physique 38402 Saint Martin d’Hères


  • Monday 27 May 14:00-15:30 - Dario Vincenzi

    LIPHY Seminar

    Résumé :



    contact: Philippe Peyla

    Lieu : LIPhy, conference room - 140 Avenue de la Physique 38402 Saint Martin d’Hères


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