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dc.contributor.authorHajjaj, Amal
dc.contributor.authorJaber, Nizar
dc.contributor.authorAlcheikh, Nouha
dc.contributor.authorYounis, Mohammad I.
dc.date.accessioned2019-10-20T06:48:09Z
dc.date.available2019-10-20T06:48:09Z
dc.date.issued2019-11-25
dc.identifier.citationHajjaj, A. Z., Jaber, N., Alcheikh, N., & Younis, M. I. (2019). A Sensitive Resonant Gas Sensor Based on Multimode Excitation of a Buckled Beam. Volume 4: 24th Design for Manufacturing and the Life Cycle Conference; 13th International Conference on Micro- and Nanosystems. doi:10.1115/detc2019-98148
dc.identifier.doi10.1115/DETC2019-98148
dc.identifier.urihttp://hdl.handle.net/10754/658661
dc.description.abstractThe quest for ultra-sensitive low-cost miniaturized gas sensors in the past few decades has sparked interest to seek alternative approaches other than the conventional gas sensors that need large surface areas and special chemicals for functionalization. MEMS thermal conductivity based gas sensors [1, 2] have been shown to be among the promising candidates since they do not rely on gas absorption or chemical reactions. These sensors show long lifetime and great stability compared to conventional gas sensor. The thermal conductivity based gas sensors rely on the resistance variation of the heated structures due to gas exposure [1]. Typical values of resistance changes are less than few percent. Here, we present a thermal conductivity based gas sensor relying on frequency shifts of an electrothermally heated bridge operated near the buckling point, which leads to ultra-high sensitivity.
dc.description.sponsorshipThis research was support by KAUST.
dc.publisherAmerican Society of Mechanical Engineers
dc.relation.urlhttps://asmedigitalcollection.asme.org/IDETC-CIE/proceedings/IDETC-CIE2019/59223/Anaheim,%20California,%20USA/1069927
dc.rightsArchived with thanks to American Society of Mechanical Engineers
dc.subjectGas sensor
dc.subjectthermal conductivity
dc.subjectbridge resonator
dc.subjectbuckling point
dc.subjectelectrothermally heated
dc.titleA sensitive resonant gas sensor based on multimode excitation of a buckled beam
dc.typeConference Paper
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.conference.date2019-08-18 to 2019-08-21
dc.conference.nameASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC-CIE 2019
dc.conference.locationAnaheim, CA, USA
dc.eprint.versionPost-print
dc.contributor.institutionSchool of Mechanical Engineering, Purdue University, West Lafayette, IN, 47906, USA.
kaust.personHajjaj, Amal Z.
kaust.personJaber, Nizar
kaust.personAlcheikh, Nouha
kaust.personYounis, Mohammad I.
refterms.dateFOA2019-10-21T10:33:21Z
dc.date.published-online2019-08-22
dc.date.published-print2019-06


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