Simultaneous electrical and mechanical resonance drive for large signal amplification of micro resonators

Authors

M. H. Hasan, University of Nebraska-LincolnFollow
Fadi M. Alsaleem, University of Nebraska-LincolnFollow
N. Jaber, King Abdullah University of Science and Technology
M. A. A. Hafiz, King Abdullah University of Science and Technology
M. I. Younis, King Abdullah University of Science and TechnologyFollow

Document Type

Article

Date of this Version

2018

Citation

AIP ADVANCES 8, 015312 (2018).

Comments

©2018 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license.

Abstract

Achieving large signal-noise ratio using low levels of excitation signal is key requirement for practical applications of micro and nano electromechanical resonators. In this work, we introduce the double electromechanical resonance drive concept to achieve an order-of-magnitude dynamic signal amplification in micro resonators. The concept relies on simultaneously activating the micro-resonator mechanical and electrical resonance frequencies. We report an input voltage amplification up to 15 times for a micro-resonator when its electrical resonance is tuned to match the mechanical resonance that leads to dynamic signal amplification in air (Quality factor enhancement). Furthermore, using a multi-frequency excitation technique, input voltage and vibrational amplification of up to 30 times were shown for the same micro-resonator while relaxing the need to match its mechanical and electrical resonances.