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Particle sensor using solidly mounted resonators

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Thomas, Sanju, Villa-López, Farah Helue, Theunis, Jan, Peters, Jan, Cole, Marina and Gardner, J. W. (2016) Particle sensor using solidly mounted resonators. IEEE Sensors Journal, 16 (8). pp. 2282-2289. doi:10.1109/JSEN.2015.2512303

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Official URL: http://dx.doi.org/10.1109/JSEN.2015.2512303

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Abstract

This paper describes the development of a novel particle sensing system employing zinc oxide based solidly mounted resonator (SMR) devices for the detection of airborne fine particles (i.e., PM2.5 and PM10). The system operates in a dual configuration in which two SMR devices are driven by Colpitts-type oscillators in a differential mode. Particles are detected by the frequency shift caused by the mass of particles present on one resonator with while the other acts as a reference channel. Experimental validation of the system was performed inside an environmental chamber using a dust generator with the particles of known size and concentration. A sensor sensitivity of 4.6 Hz per μg/m3 was demonstrated for the SMRs resonating at a frequency of 970 MHz. Our results demonstrate that the SMR-based system has the potential to be implemented in CMOS technology as a low-cost, miniature smart particle detector for the real-time monitoring of airborne particles.

Item Type: Journal Article
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH): Air -- Pollution -- Measurement, Resonators
Journal or Publication Title: IEEE Sensors Journal
Publisher: Institute of Electrical and Electronic Engineers
ISSN: 1530-437X
Official Date: 15 April 2016
Dates:
DateEvent
15 April 2016Published
24 December 2015Available
20 December 2015Accepted
Volume: 16
Number: 8
Number of Pages: 8
Page Range: pp. 2282-2289
DOI: 10.1109/JSEN.2015.2512303
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: Consejo Nacional de Ciencia y Técnica (Argentina) (CONACYT)
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