title: Mass-sensitive detection of gas-phase volatile organics using disk microresonators.
abstract: The detection of volatile organic compounds (VOCs) in the gas phase by mass-sensitive disk microresonators is reported. The disk resonators were fabricated using a CMOS-compatible silicon micromachining process and subsequently placed in an amplifying feedback loop to sustain oscillation. Sensing of benzene, toluene, and xylene was conducted after applying controlled coatings of an analyte-absorbing polymer. An analytical model of the resonator's chemical sensing performance was developed and verified by the experimental data. Limits of detection for the analytes tested were obtained, modeled, and compared to values obtained from other mass-sensitive resonant gas sensors.
authors.affiliation: Georgia Institute of Technology, School of Electrical and Computer Engineering, Atlanta, 30332, United States. gt0914a@mail.gatech.edu
authors.forename: Stuart B
authors.initials: SB
authors.lastname: Truax
authors.forename: Kemal S
authors.initials: KS
authors.lastname: Demirci
authors.forename: Luke A
authors.initials: LA
authors.lastname: Beardslee
authors.forename: Yulia
authors.initials: Y
authors.lastname: Luzinova
authors.forename: Andreas
authors.initials: A
authors.lastname: Hierlemann
authors.forename: Boris
authors.initials: B
authors.lastname: Mizaikoff
authors.forename: Oliver
authors.initials: O
authors.lastname: Brand
mesh_terms: D002138:Calibration; D005740:Gases / Q000032:analysis* / Q000737:chemistry*; D057230:Limit of Detection; D055616:Microtechnology / Q000295:instrumentation*; D055549:Volatile Organic Compounds / Q000032:analysis* / Q000737:chemistry*
chemical_list: D005740:Gases; D055549:Volatile Organic Compounds