Nano Science and Technology Institute
Nanotech 2004 Vol. 1
Nanotech 2004 Vol. 1
Technical Proceedings of the 2004 NSTI Nanotechnology Conference and Trade Show, Volume 1
Chapter 8: MEMS Design and Application

Design & Simulation of a Mechanical Amplifier for Inertial Sensing Applications

Authors:M.N. Kham, R. Houlihan and M. Kraft
Affilation:Southampton University, UK
Pages:343 - 346
Keywords:capacitive accelerometer, mechanical leverage system, sensitivity
Abstract:This paper describes the design and simulation of a mechanical amplifier used to improve the performance of a capacitive accelerometer. It comprises a long silicon beam attached to the proof mass and it amplifies the sensed motion based on the leverage system [1]. Finite element simulations have been used to validate the concept and facilitate the design. Although increasing the overall accelerometer dimensions, a mechanical amplifier provides amplification without adding significant noise to the system, unlike its electrical counterpart. Moreover, the increased amplification of the motion obtained with longer beam length results in higher sensitivity.
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