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TZID:Europe/Paris
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BEGIN:VEVENT
UID:0-732@lptms.universite-paris-saclay.fr
DTSTART:20200225T143000Z
DTEND:20200225T143000Z
DTSTAMP:20200212T124941Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/soutenance-de-the
 se-samuel-cazayus-claverie/
SUMMARY:Soutenance de thèse: Samuel Cazayus-Claverie - Petit amphi\, bâti
 ment Pascal n° 530 - 25 Fév 20 14:30
DESCRIPTION:Effect of residual stress on the elasticity of fiber networks\n
 par\n\nSamuel Cazayus-Claverie\n&nbsp\;\n\nJury:\n\nAnaël Lemaître - rap
 porteur \n\nChaouqi Misbah - rapporteur \n\nGiuseppe Foffi - examinateur \
 n\nCécile Leduc - examinatrice \n\nMartin Lenz - directeur de thèse \n\n
 Raphaël Voituriez - examinateur\n\nResumé:\n\nCells are the basic units 
 of all living organisms. Eukaryotic cells are stuctured on top of a scaffo
 ld of fibers ranging from stiff microtubules to semiflexible actin : the c
 ytoskeleton. As such the cytoskeleton is involved into a broad family of p
 rocesses of translocation and deformation of cells\, it is also responsibl
 e for cells mechanical stiffness. The actin filaments into cytoskeleton ca
 n be cross-linked into bundles built of as much as 30 parallel filaments\,
  but filaments can get bound at a finite angle also. These processes are i
 n competition during network’s self-assembly and result in strong residu
 al stresses. In this thesis\, we study the effect of these residual stress
 es on the elasticity of fiber networks in 2 dimensions of space. We develo
 p an original method to compute stress on the boundaries of a network and 
 its\nelastic moduli. We find that residual stress induces a  stiffening i
 n the infinitesimal response of the network. Residual stress also affects 
 the non linear response of the network : we find that it makes the network
  unstable under compression\, and that they control the onset of non linea
 r response to shear.\n\n&nbsp\;
CATEGORIES:seminars
LOCATION:Petit amphi\, bâtiment Pascal n° 530\, rue André Rivière\, Ors
 ay\, 91405\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=rue André Rivière\, Orsay
 \, 91405\, France;X-APPLE-RADIUS=100;X-TITLE=Petit amphi\, bâtiment Pasca
 l n° 530:geo:0,0
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