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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 16 December 14:00-15:30 - Guillaume PARRY - SIMAP, CNRS – Grenoble INP – Univ. Grenoble Alpes

    Buckling Delamination of Thin Films Deposited on Substrates

    Résumé : Thin films and coatings are widely used in many technological applications (mechanical systems, optical systems or microelectronic devices). High internal stresses are often measured, typically about a few Gigapascals, in compression when the coatings are prepared by physical vapor deposition (PVD). The films are then susceptible to undergo "buckling delamination" (i.e. delaminate from the substrate while buckling), which leads to complex delamination patterns on the free surfaces of the materials.
    We will discuss the modelling of these buckling delamination phenomena, and show in particular how the propagation of "telephone cords" blisters, the most frequently observed on coatings, was recently understood by using numerical simulation by the finite elements method and the use of cohesive zone models. Understanding this phenomenon provides indirect access to the adhesion energy of the films. We will also discuss the phenomenon of blistering occurring for thin films deposited on soft substrates, and we will see in particular how the softness of the substrate modifies the delamination mechanism and promotes the interaction between blistering structures.



    contact: Jocelyn Etienne

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


  • Monday 6 January 2020 14:00-15:30 - Sophie Marbach

    LIPHY Seminar

    Résumé :



    contact: Cyril Picard

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


  • Monday 27 January 2020 14:00-15:30 - Antoine SELLIER

    LIPHY Seminar

    Résumé :



    contact: Chaouqi Misbah

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


  • Monday 10 February 2020 14:00-15:30 - Axel Huerre

    LIPHY Seminar

    Résumé :



    contact: Gwennou Coupier

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


  • Monday 17 February 2020 14:00-15:30 - Knut Drescher - MPI Marburg

    LIPHY Seminar

    Résumé :



    contact: Jocelyn Etienne

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


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