A multimodal lithium niobate-based SAW gas sensor for accurate detection of carbon dioxide at elevated temperature

Muhammad Zubair Aslam; Haifeng Zhang; Morris Good; Yanming Guo; Michael Larche

doi:10.1016/j.ultras.2023.107198

A multimodal lithium niobate-based SAW gas sensor for accurate detection of carbon dioxide at elevated temperature

Ultrasonics. 2024 Mar:138:107198. doi: 10.1016/j.ultras.2023.107198. Epub 2023 Nov 17.

Authors

Muhammad Zubair Aslam¹, Haifeng Zhang², Morris Good³, Yanming Guo³, Michael Larche³

Affiliations

¹ Department of Mechanical Engineering, University of North Texas, USA.
² Department of Mechanical Engineering, University of North Texas, USA. Electronic address: [email protected].
³ Pacific Northwest National Laboratory (PNNL), USA.

PMID: 38011814
DOI: 10.1016/j.ultras.2023.107198

Abstract

Carbon dioxide (CO2) detection is crucial for safety control, monitoring of the environment, and other industrial applications. The diverse fields of applications make the detection of CO₂ a challenging task. In this paper, a study on a multimodal surface acoustic wave (SAW) CO₂ sensing system was conducted to scrutinize the sensitivity of the lithium niobate-based multimodal SAW sensor towards CO₂ with temperature compensation. The study focused on developing and evaluating a SAW temperature-compensated gas sensor using time-of-flight measurements. The sensor exhibited good repeatability and sensitivity toward different concentrations of CO₂.

Keywords: Carbon dioxide; Sensor; Surface acoustic wave; Time-of-flight.