Document Type
Article
Language
eng
Publication Date
1-15-2021
Publisher
Institute of Electrical and Electronics Engineers
Source Publication
IEEE Sensors Journal
Source ISSN
2574-0970
Abstract
This work demonstrated the development of an array of oscillator-based sensors for the detection of volatile organic compounds (VOCs). A field-programmable gate array (FPGA) was leveraged to monitor the oscillation frequency of 16 sensing elements in parallel. It was shown that three functional chemistries can be deposited via inkjet printing to detect several analytes selectively. These unique response characteristics allowed for the creation of a linear regression model that relates the shifts in oscillation frequencies to the concentration of specific analytes. This approach utilized a single array with sufficient elements to incorporate intentional redundancies. Ultimately, this work demonstrated a low-cost oscillator-based sensing array capable of simultaneously monitoring chemical processes with single second resolution using 16 independent channels.
Recommended Citation
Murray, Allison K.; Meseke, Joseph R.; Bajaj, Nikhil; and Rhoads, Jeffrey F., "Addressing the Practical Limitations of Volatile Organic Compound Sensors Through an Oscillator-Based Sensing Array" (2021). Mechanical Engineering Faculty Research and Publications. 271.
https://epublications.marquette.edu/mechengin_fac/271
Comments
Accepted version. IEEE Sensors Journal, Vol. 21, No. 2 (January 15, 2021): 2169-2175. DOI. © 2021 The Institute of Electrical and Electronics Engineers. Used with permission.
Allison K. Murray was affiliated with Purdue University at the time of publication.