@article{d6dbf6d125da48b8b80f9008d6815d67,
title = "A Resonant Gas Sensor Based on Multimode Excitation of a Buckled Microbeam",
abstract = "We report a new gas sensing technique based on the simultaneous tracking of multiple modes of vibration of an electrothermally heated bridge resonator operated near the buckling point. The proposed technique maximizes the sensitivity of the sensor to changes in gases concentrations. We demonstrate a 200% frequency shift in contrast to 0.5% resistance change using the conventional resistive technique. The method also demonstrates selective identification for some gases without the need for surface functionalization of the microstructure. The proposed method is simple in principle and design and is promising for achieving practical low-cost gas sensors.",
keywords = "buckling point, Gas sensor, heated microbeam, multimode",
author = "Hajjaj, {Amal Z.} and Nizar Jaber and Nouha Alcheikh and Younis, {Mohammad I.}",
note = "Funding Information: Manuscript received September 17, 2019; revised October 21, 2019; accepted October 25, 2019. Date of publication October 30, 2019; date of current version January 24, 2020. This work was supported by the King Abdullah University of Science and Technology (KAUST). The associate editor coordinating the review of this article and approving it for publication was Prof. Tien-Kan Chung. (Amal Z. Hajjaj and Nizar Jaber contributed equally to this work.) (Corresponding author: Mohammad I. Younis.) A. Z. Hajjaj is with the Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia, and also with the Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough LE11 3TU, U.K. Publisher Copyright: {\textcopyright} 2001-2012 IEEE.",
year = "2020",
month = feb,
day = "15",
doi = "10.1109/JSEN.2019.2950495",
language = "British English",
volume = "20",
pages = "1778--1785",
journal = "IEEE Sensors Journal",
issn = "1530-437X",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "4",
}