Work

Utilization of Varying Transient Response Times in Gravimetric and Impedimetric Multivariate Gas Sensor With Single Polymeric Sensing Film for Enhanced Selectivity

Year: 2022

Type: conference-paper

Abstract: We report on the ability to discriminate between multiple volatile organic compounds (VOCs) utilizing variations in the transient response times of the gravimetric and impedimetric responses of a single micromachined multivariate gas sensor.The novel resonant gravimetric microsensor with a collocated capacitive transducer based on an interdigitated electrode (IDE) enables the simultaneous observation of both mass loading and dielectric changes in the same polymeric sensing film upon sorption of analyte.A 2D dispersion of the multivariate responses demonstrates separation between aromatics and alcohols due to variations in the transient response times along with varying concentrationdependences of these responses.

Source: Solid-State Sensors, Actuators, and Microsystems Workshop (Hilton Head Workshop)

DOI: 10.31438/trf.hh2022.38

Authors: Steven A. Schwartz, Luke Beardslee, Oliver Brand

Institutions: Georgia Institute of Technology, Emory University, Naval Submarine Medical Research Laboratory

Language: English

Topic: Gas Sensing Nanomaterials and Sensors

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze