Study of Resonant Sensors in Gapo4

ISBN-13: 9786131506154 / Angielski / Miękka / 2010 / 180 str.

Delmas Laurent

Opis

From automobile to aeronautic with biomedical, all applications domain uses sensors. Some of them are frequency-output. The coming of new piezoelectric materials opens a door to applications not accessible nowadays and specially at high temperatures. Gallium orthophosphate (GaPO4) is one of these new piezoelectric materials with high coupling factor. This book is about design and realisation of different GaPOs sensors working in acoustic bulk waves. The first part consists to study temperature sensibility and stability building analytical model of vibrating beam in length extensional, flexural and torsional modes.This theoretical study is then completed and compared with analysis using Finite Element Method (FEM) and experiemental measurements of some resonators made in different crystallographic orientations. Then application of biosensors using thickness shear mode is presented. An FEM is realised in order to study influence of some parameters on sensor behaviour. A comparison between model and measurements is also reported. These positive results open up possibilities of future developments described in conclusion.

O autorze

Laurent DELMAS, né le 16 mars 1979, a passé son enfance dans un petit village du nord Aveyron (12). En 2002, il obtient son diplôme d''Ingénieur en mécanique à l''ENSMM (Besançon) puis en 2005, le titre de Docteur en Sciences pour l''Ingénieur à l''Université de Franche-Comté. Depuis 2006, il travaille chez SENSeOR...