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Generic Topics - Model-Systems and measurements

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This direction Model systems and measurements complements the other ones with as objectives, on one hand, the validation of the theoretical and numerical concepts developed in the other areas and, on the other hand, to feed the theory.

Its first purpose is the observation and the characterization of the environment and living systems. Natural systems of biological or mineral origin are characterized by a large heterogeneity in composition. Two routes will be implemented to investigate them. The first one consists in a direct study of real systems, for which we will mainly focus on the mechanical behaviour at collective and individual scales ( wood, wheat, blood ….) The second one is based on the design of model systems with well controlled tuneable physico-chemical properties. These model systems will permit us to highlight the relevant phenomenon and to check, from simplified experimental situations, the numerical or theoretical models.

The second objective is to elaborate from new concepts, materials and instrumental techniques for innovative applications in the environmental and living areas. In this context, the new materials will have to own a set of properties and performances in detection, resolution, reliability, selectivity, size, mass and biocompatibility. Nanomaterials, by their size and low dimensionality exhibit many of these advantages. Their designs and investigations of their physical properties will be in heart of our activity.



Evidence of the tension strength of cellulose during wood formation. In vivo experiments realized at the Grenoble Synchroton (INRA Orleans Col. and Univ. Kyoto)



Granular structure of the albumen of wheat, which is constituted of small granules with two different characteristic size which are cemented by protein matrix.