期刊
ADVANCED SCIENCE
卷 10, 期 7, 页码 -出版社
WILEY
DOI: 10.1002/advs.202205725
关键词
in-memory-computing; low-frequency noise (LFN); selective detection; tungsten oxide
Concerns about air quality, industrial gas leaks, and medical diagnostics are driving the demand for high-performance gas sensors. This study presents a novel method, low-frequency noise (LFN) spectroscopy, to achieve selective detection using a single FET-type gas sensor. The proposed system provides a new and efficient method capable of selectively detecting a target gas using in-memory-computed LFN spectroscopy, paving the way for further development in gas sensing systems.
Concerns about indoor and outdoor air quality, industrial gas leaks, and medical diagnostics are driving the demand for high-performance gas sensors. Owing to their structural variety and large surface area, reducible metal oxides hold great promise for constructing a gas-sensing system. While many earlier reports have successfully obtained a sufficient response to various types of target gases, the selective detection of target gases remains challenging. In this work, a novel method, low-frequency noise (LFN) spectroscopy is presented, to achieve selective detection using a single FET-type gas sensor. The LFN of the sensor is accurately modeled by considering the charge fluctuation in both the sensing material and the FET channel. Exposure to different target gases produces distinct corner frequencies of the power spectral density that can be used to achieve selective detection. In addition, a 3D vertical-NAND flash array is used with the fast Fourier transform method via in-memory-computing, significantly improving the area and power efficiency rate. The proposed system provides a novel and efficient method capable of selectively detecting a target gas using in-memory-computed LFN spectroscopy and thus paving the way for the further development in gas sensing systems.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据