Summary:

This work focuses on quantifying the physical behaviour of biological tissues coupled with a flexible tissue sensor integrated into a solid substrate. The aim is to create sensitive interfaces between the skin and the substrate (reactive exoskeleton) by integrating flexible and extensible nanowire electromechanical sensors, the design of which is based on optimised electroactive polymer fibres. In order to optimise the conditions at the interfaces, a finite element model was used in which the strain/stress components at the interface are considered as variables in the model. This was then validated using a mathematical formalism modelling dynamic movement in a viscoelastic multilayer medium by combining the boundary conditions and the physical and mechanical characteristics of each layer in order to assess the dynamic interactions at the interfaces.

Abstract:

This work focuses on the quantification of the physical behavior of biological tissues coupled with a flexible tissue sensor integrated in a solid substrate. The objective is to create sensitive interfaces between the skin and the substrate (reactive exoskeleton) by integrating flexible and extensible nanowire electromechanical sensors whose design is based on optimized electroactive polymer fibres. In order to optimise the conditions at the interfaces, a finite element model has been approached in which the strain/stress components at the interface are considered as variables of the model, then validated by a mathematical formalism modeling the dynamic motion in a viscoelastic multilayer medium and this by combining the boundary conditions and the physical and mechanical characteristics of each layer in order to evaluate the dynamic interactions at the interfaces.