Experimental evaluation demonstrates enhanced sensitivity and low power consumption in microheater hydrogen sensors, indicating high scalability for energy-constrained monitoring.
This study characterizes the effects of dynamic pulsing parameters on hydrogen (H2) gas detection using a novel microheater-integrated metal oxide semiconductor (MOS) sensor. The proposed single-device system operates through duty cycling by utilizing repeated pulsed power inputs. The impact of pulse characteristics, specifically the pulse period and duty cycle, on the overall sensor performance is systematically evaluated. The results demonstrate that operating at an optimal pulse period of 2.4 s with a 67% duty cycle provides a 32% enhancement in the hydrogen response without compromising the response time. In addition, this designed duty-cycling strategy significantly reduces energy consumption, achieving a low average power consumption of ∼19.8 mW. Fabricated using wafer-level batch processing techniques, this compact and energy-efficient sensor platform represents a highly scalable and commercially viable solution for integration into power-constrained Internet of Things monitoring applications.
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Yan et al. (2026) studied this question.
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