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Mechanical Properties of Thin-Film Materials
The PMMCM team's activity is focused on the modeling of the key mechanical phenomena involved in thin films, in order to provide sizing for the various mechanical devices that use thin films (typ. <100 μm) and the development of micrometric devices that exploit effects of scale.
Goals and Research Areas
The PMMCM team develops innovative experimental methods used to construct modelings:
› For the elasticity of materials under consideration: the geometric margins on objects obtained through microfabrication are a challenge to the transposition of the usual standardized trials at the micrometer scale; the fabrication processes may alter the properties of the material under scrutiny;
› For the plasticity mechanisms at stake at the granular scale;
› For surface couplings, whose role grows with the surface/volume ratio of the structures in question.
This activity relies on the team members’ skills in mechanics of materials, identification, full-field measurements, microfabrication and mechanical characterization.
This activity is focused both on innovative characterization methods for well-established phenomena (elasticity, plasticity) at the micrometer scale (aided by the training of PhD students) and on the simultaneous development of a theoretical framework and experimental tools for the study of surface couplings.
Implementing our work
Obviously, the PMMCM and the P2M teams have many interests in common. The PMMCM activity also relies on local potential for microfabrication (MIMENTO) and on the instrumentation skills developed elsewhere, in the MN2S Department or in other laboratories (Institut Langevin, ITODYS, Neurophotonique). It also has good relations with national (GDR MCIMS, MNS) and international (GDRI Mecano) communities.