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Title: PEDOT:PSS/QCM-based multimodal humidity and pressure sensor

Journal Article · · Sensors and Actuators. B, Chemical

A room-temperature multimodal sensor composed of PEDOT:PSS deposited on an AT-cut quartz crystalmicrobalance (QCM) crystal has been fabricated. The nonlinear resistive and frequency sensor responses aredeconvolved using an articial neural network (ANN), which allows the single sensor to function simultane-ously as a relative humidity (RH) sensor and a pressure sensor using only two electrodes. We demonstratethat the predictive ability of the sensor is highly inuenced by the data used to train the ANN. When trainingsets are tailored to resemble the operating conditions of the sensor, the sensor achieves an average resolutionof < 3% RH from 0-100% RH, even after H2O saturation occurs on the surface. Our results indicate thatANNs show strong promise for improving the resolution of low cost gas sensors and for expanding the rangeof environmental conditions in which a given sensor can operate.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1427699
Alternate ID(s):
OSTI ID: 1431162
Journal Information:
Sensors and Actuators. B, Chemical, Vol. 236, Issue C; ISSN 0925-4005
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 49 works
Citation information provided by
Web of Science

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Cited By (4)

Machine Learning‐Enabled Correlation and Modeling of Multimodal Response of Thin Film to Environment on Macro and Nanoscale Using “Lab‐on‐a‐Crystal” journal January 2020
Quartz crystal microbalance coated with PEDOT–PSS/PVA nanofiber for a high-performance humidity sensor journal January 2019
Rapid response flexible humidity sensor for respiration monitoring using nano-confined strategy journal January 2020
Quartz Crystal Microbalance Electronic Interfacing Systems: A Review journal December 2017

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