Next Article in Journal / Special Issue
Heater-Integrated Cantilevers for Nano-Samples Thermogravimetric Analysis
Previous Article in Journal
Design and Test of a Biosensor-Based Multisensorial System: A Proof of Concept Study
Previous Article in Special Issue
A Silicon Nanomembrane Detector for Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry (MALDI-TOF MS) of Large Proteins
Sensors 2013, 13(12), 16641-16656; doi:10.3390/s131216641
Article

A Novel Comb Architecture for Enhancing the Sensitivity of Bulk Mode Gyroscopes

1
,
2
 and
1,*
Received: 20 October 2013 / Revised: 27 November 2013 / Accepted: 3 December 2013 / Published: 4 December 2013
(This article belongs to the Special Issue Nanomechanical Sensors)
View Full-Text   |   Download PDF [1021 KB, uploaded 21 June 2014]   |   Browse Figures

Abstract

This work introduces a novel architecture for increasing the sensitivity of bulk mode gyroscopes. It is based on adding parallel plate comb drives to the points of maximum vibration amplitude, and tuning the stiffness of the combs. This increases the drive strength and results in a significant sensitivity improvement. The architecture is targeted for technologies with ~100 nm transducer gaps in order to achieve very high performance devices. In this work, this sensitivity enhancement concept was implemented in SOIMUMPs, a commercial relatively large gap technology. Prototypes were measured to operate at frequencies of ~1.5 MHz, with quality factors of ~33,000, at a 10 mTorr vacuum level. Measurements using discrete electronics show a rate sensitivity of 0.31 μV/°/s, corresponding to a capacitance sensitivity of 0.43 aF/°/s/electrode, two orders of magnitude higher than a similar design without combs, fabricated in the same technology.
Keywords: MEMS; resonant gyroscopes; bulk-mode; sensitivity enhancement MEMS; resonant gyroscopes; bulk-mode; sensitivity enhancement
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
EndNote
MDPI and ACS Style

Elsayed, M.Y.; Nabki, F.; El-Gamal, M.N. A Novel Comb Architecture for Enhancing the Sensitivity of Bulk Mode Gyroscopes. Sensors 2013, 13, 16641-16656.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here

Comments

Cited By

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert