Laboratoire Interdisciplinaire de Physique

A project using a newly patented LIPhy technology was supported by a "CNRS prematuration program" and is currently in the maturation phase with Satt Linksium.

At a very low volume fraction (< 1%), nanoparticles do not modify significantly the mechanical or dynamical properties of nanocomposites. It follows that nanoparticles can be used as tracers or probes for revealing the dynamics of strained polymer chains. Researchers of the Laboratory, in collaboration with other scientists of Grenoble and of two foreign Universities, have investigated the dynamics of stretched elastomer chains by means of X-Ray Photon Correlation Spectroscopy (XPCS). The two-time correlation functions determined in the directions parallel and perpendicular to that of the tensile strain, display anisotropic and heterogeneous dynamics.

In neurons, electrical and calcium signals result from the synergistic simultaneous activity of several ion channel types. In the current issue of Journal of Neuroscience, researchers of the LIPhy and their international collaborators report a study where, for the first time, they reconstructed the parallel activity of diverse calcium and potassium channels during a physiological synaptic input in native neurons.