InSe-Based Sensors and Related Sensing Systems for NO 2 Gas/Temperature Monitoring

作者：Mingyang Gao, Bohang Zhang, Xinyuan Du, Xueqian Yang, Chunxue Zhai, Cheng Chen, Zhiyong Zhang, Wu Zhao · 发表于：ACS Sensors · 年份：2025 · DOI：10.1021/acssensors.5c02421 · 被引用次数：19 · 研究领域：Gas Sensing Nanomaterials and Sensors、Advanced Chemical Sensor Technologies、Analytical Chemistry and Sensors

High-sensitivity, multiparameter sensing is increasingly critical for environmental monitoring and electronics. Existing sensing platforms struggle to integrate precise, rapid, and stable monitoring of parts per billion-level hazardous gases and temperature within a single miniaturized device. This study developed a novel sensor based on two-dimensional (2D) indium selenide (InSe), complemented by first-principles density functional theory calculations elucidating the layer-dependent NO 2 adsorption mechanism. The sensor demonstrated exceptional dual-mode performance, achieving a 103.40% response to 2 ppm of NO 2 alongside a broad temperature detection range (25–150 °C) with high sensitivity. To enable practical applications, we further integrated the sensor into a portable intelligent monitoring system that features signal acquisition, processing, and alarm. This integrated bifunctional platform significantly advances miniaturized, multiparameter sensing technology, offering a powerful solution for next-generation environmental monitors and devices.