ORGANISATION/COMPANYUniversité Grenoble Alpes
RESEARCH FIELDEngineering › Mechanical engineeringPhysics › BiophysicsPhysics › Computational physics
RESEARCHER PROFILEFirst Stage Researcher (R1)
APPLICATION DEADLINE22/05/2021 21:00 - Europe/Brussels
LOCATIONFrance › Grenoble
TYPE OF CONTRACTTemporary
HOURS PER WEEK35
OFFER STARTING DATE01/10/2021
Living droplets : cell spreading as a wetting problem
The shape assumed by living cells plays a major role in its physiological function. As a cell spreads on a flat substrate, it takes a shape which is only partly reminiscent of the one of a liquid droplet. Indeed, the surface concavity reverses from convex to concave close to the triple line that it forms with the substrate. This change of curvature sign is a key information about the mechanical balance that governs cell shape. It is known that this balance is mostly between forces exerted within a thin material layer at the cell surface, made of a polymeric network and called the actin cortex. Within this cortex, motor-molecules of myosin generate a mechanical tension that can be modelled as a surface tension. This brings forward the comparison with the case of liquid droplets. However, the reversal of curvature sign indicates that one or more additional phenomena are at play and modify cell balance. We have already acquired experimental observations and quantifications that open the way to tackling this problem, first in the quasistatic case and then in the dynamic case. Solving it will allow us to understand the mechanisms that determine cell shape.
This PhD offer is fully funded for 3 years, which is the standard duration of a PhD project in France.
Basic health and unemployment insurance is included. It is usual in France to purchase a complementary insurance costing about one or two percent of real earnings.
Web site for additional job details
REQUIRED EDUCATION LEVELPhysics: Master Degree or equivalentEngineering: Master Degree or equivalentMathematics: Master Degree or equivalent
• Theoretical mechanics : elasticity, fluid mechanics, optionally visco-elasticity
• Numerics : finite differences, finite volumes or finite elements
• Coding : python or other language appropriate for scientific computation (C++, matlab, Julia,…)
• Good communication skills and motivation for an interdisciplinary project.
EURAXESS offer ID: 632033
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