Work

Dynamic Multigas Differentiation Using a Temperature-Modulated Dielectric-Excitation Gas Sensor

Year: 2026

Type: article

Abstract: Existing legacy gas sensors are tiny and not cost-prohibitive, but their gas cross-sensitivity limits reliable detection of gases of interest in complex environments. Here, we report multigas differentiation using an individual semiconducting metal oxide (SMOX) gas sensor operated with dielectric excitation and temperature modulation. Dielectric excitation provides a frequency-dependent response, while temperature modulation introduces gas-specific transient signatures that further increase response dimensionality. We differentiate multiple gases under both step changes and dynamically randomized changes in gas concentration. These results provide a practical route for using conventional SMOX sensing elements in modern high-information-content gas sensors for emerging applications.

Source: IEEE Sensors Letters

DOI: 10.1109/lsens.2026.3706243

Authors: Shiyao Shan, Baokai Cheng, Garrett Sculthorpe, Janell Crowder, Radislav A. Potyrailo

Institution: GE Vernova (United States)

Language: English

Topic: Gas Sensing Nanomaterials and Sensors

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,645

OpenAlex ID: W7165568013

FWCI:

Cites: 30

Cited by:

Related to: 10