Capturing higher modes of vibration of micromachined resonators

Venkatesh, KP and Pratap, R (2009) Capturing higher modes of vibration of micromachined resonators. In: International Conference on Modern Practice in Stress and Vibration Analysis (MPSVA 2009), , September 2009, Newhall Cambridge University, UK.

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Abstract

MEMS resonators have potential applications in the areas of RF-MEMS, clock oscillators, ultrasound transducers, etc. The important characteristics of a resonator are its resonant frequency and Q-factor (a measure of damping). Usually large damping in macro structures makes it difficult to excite and measure their higher modes. In contrast, MEMS resonators seem amenable to excitation in higher modes. In this paper, 28 modes of vibration of an electrothermal actuator are experimentally captured–perhaps the highest number of modes experimentally captured so far. We verify these modes with FEM simulations and report that all the measured frequencies are within 5% of theoretically predicted values.

Item Type:	Conference Paper
Publisher:	Institute of Physics
Additional Information:	Copyright of this article belongs to Institute of Physics.
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	19 Dec 2011 09:53
Last Modified:	19 Dec 2011 09:53
URI:	http://eprints.iisc.ac.in/id/eprint/40094

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