Modeling & Simulation of Microsystems Chapter 5

From MEMS to NEMS: Modelling and characterization of the non linear dynamics of resonators, a way to enhance the dynamic range

Authors: N. Kacem, S. Hentz, H. Fontaine, V. Nguyen, M.T. Delaye, H. Blanc, P. Robert, B. Legrand, L. Buchaillot, N. Driot, R. Dufour

Affilation: CEA, France

Pages: 619 - 622

Keywords: MEMS, NEMS, resonator, non linear dynamics, dynamic range, characterization methods, analytical model

Abstract:
In order to compensate the loss of performances when scaling sensors down to NEMS, a process, characterization methods and above all an original analytical model including main sources of nonlinearities are presented. The permanent quest for cost cuts has led to the use of potential “In-IC” compatible thin SOI-based technologies, which imposes drastic size reduction of the sensors. Combined with the need of in-plane actuation for fabrication and design simplicity, this implies a large reduction in detectability. Moreover nonlinearities occur proportionally sooner for small structures which reduce their dynamic range predicted using linear models. The idea is to find physical conditions in order to maximise the signal variations and to push the limits of the linear behavior.

ISBN: 978-1-4200-8505-1
Pages: 940
Hardcopy: $159.95