Etude de l’énergie renouvelable dans l’environnement humain pour alimenter les systèmes électroniques portables

Abstract

Extract from the ambient environment energy required to operate a micro-electronic device remains a formidable challenge. Strong demand with respect to such systems arises now many sectors (domestic, transport, medical, military, industrial ...). Indeed the levels of knowledge and technological know-how can now make smart materials with mechanical and electrical properties desired. Making possible the design of system to lower costs, with congestion and lower masses. In addition polymers have interesting properties compared to inorganic materials. They are lightweight, inexpensive, and foldable, the purpose of this thesis is to explore the potential of electroactive polymers for application of mechanical energy harvesting. To meet the problem and has the objective of this thesis, we will initially study the means implemented to improve the capacity of the polymer dielectric then focus our research on the electrical characterizations, mechanical (Young's modulus), electromechanical and thermal. The second part of this work concerns the development of analytical models electromechanical as reliable as possible and adaptable to all types of structures and loads. This analytical model is validated by a series of tests using basic structures through a test, which simultaneously allows following the evolution of the different properties of the samples. The next part of this work concerns the development of innovative practical application: the recovery of mechanical energy with electrostrictive polymers been sized using the model developed by spectral analyzes, and tested. These three points allow us to demonstrate the potential of these materials and the technological breakthrough that they bring with them.