Share Email Print

Proceedings Paper • new

Low-cost scalable quartz crystal microbalance array for environmental sensing
Author(s): Eric S. Muckley; Cristain Anazagasty; Christopher B. Jacobs; Tibor Hianik; Ilia N. Ivanov
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Proliferation of environmental sensors for internet of things (IoT) applications has increased the need for low-cost platforms capable of accommodating multiple sensors. Quartz crystal microbalance (QCM) crystals coated with nanometer-thin sensor films are suitable for use in high-resolution (~1 ng) selective gas sensor applications. We demonstrate a scalable array for measuring frequency response of six QCM sensors controlled by low-cost Arduino microcontrollers and a USB multiplexer. Gas pulses and data acquisition were controlled by a LabVIEW user interface. We test the sensor array by measuring the frequency shift of crystals coated with different compositions of polymer composites based on poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) while films are exposed to water vapor and oxygen inside a controlled environmental chamber. Our sensor array exhibits comparable performance to that of a commercial QCM system, while enabling high-throughput 6 QCM testing for under $1,000. We use deep neural network structures to process sensor response and demonstrate that the QCM array is suitable for gas sensing, environmental monitoring, and electronic-nose applications.

Paper Details

Date Published: 27 September 2016
PDF: 8 pages
Proc. SPIE 9944, Organic Sensors and Bioelectronics IX, 99440Y (27 September 2016); doi: 10.1117/12.2237942
Show Author Affiliations
Eric S. Muckley, Oak Ridge National Lab. (United States)
The Univ. of Tennessee, Knoxville (United States)
Cristain Anazagasty, Oak Ridge National Lab. (United States)
Christopher B. Jacobs, Oak Ridge National Lab. (United States)
Tibor Hianik, Comenius Univ. in Bratislava (Slovakia)
Ilia N. Ivanov, Oak Ridge National Lab. (United States)

Published in SPIE Proceedings Vol. 9944:
Organic Sensors and Bioelectronics IX
Ioannis Kymissis; Ruth Shinar; Luisa Torsi, Editor(s)

© SPIE. Terms of Use
Back to Top