A Fast-Startup Self-Sustained Thermal-Piezoresistive Oscillaror with >106Effective Quality Factor in the Air

Hemin Zhang, Aojie Quan, Chenxi Wang, Linlin Wang, Chen Wang, Michael Kraft

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

This paper reports a self-sustained thermal-actuation piezoresistive-detection oscillator with boosted startup time and quality (Q) factor in the order of a million. A high Q-factor is an essential property for resonant sensors to achieve a high signal to noise ratio. It is demonstrated that the thermal-piezoresistive effect can increase the Q-factor. We obtained an effective Q-factor up to 1.06 million operating in air with direct-current induced self-oscillation. Furthermore, a fast startup time is achieved when stimulating the self-sustained oscillator with a current just below the threshold of self-oscillation requirements. The experimental results show that the startup time can be decreased by a factor of 3 by initially thermally pre-expanding the actuating nanobeam compared to a cold-startup condition.

Original languageEnglish
Title of host publication35th IEEE International Conference on Micro Electro Mechanical Systems Conference, MEMS 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages142-145
Number of pages4
ISBN (Electronic)9781665409117
DOIs
StatePublished - 2022
Externally publishedYes
Event35th IEEE International Conference on Micro Electro Mechanical Systems Conference, MEMS 2022 - Tokyo, Japan
Duration: 9 Jan 202213 Jan 2022

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
Volume2022-January
ISSN (Print)1084-6999

Conference

Conference35th IEEE International Conference on Micro Electro Mechanical Systems Conference, MEMS 2022
Country/TerritoryJapan
CityTokyo
Period9/01/2213/01/22

Keywords

  • MEMS
  • Oscillator
  • quality factor
  • self-oscillation
  • thermal-piezoresistive

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