灵敏度(控制系统)
降级(电信)
可穿戴计算机
选择性
材料科学
环境污染
计算机科学
纳米技术
环境科学
电信
嵌入式系统
电子工程
化学
工程类
环境保护
生物化学
催化作用
作者
Yanfeng Zhao,Huei‐Ru Fuh,Cormac Ó Coileáin,Conor P. Cullen,Tanja Stimpel‐Lindner,Georg S. Duesberg,Óscar Leonardo Camargo Moreira,Zongshuan Duan,Jiung Cho,Miri Choi,Byong Sun Chun,Ching‐Ray Chang,Han‐Chun Wu
标识
DOI:10.1002/admt.201901085
摘要
Abstract Air pollution is a global problem, which poses serious environmental concerns and health risks. In light of this, a key aspect of the challenge of managing air pollution is effective monitoring, which requires reliable high‐sensitivity sensors with strong selectivity and long‐term stability. Layered materials represent an emergent class of materials with extraordinary electronic properties and physicochemical properties, and, therefore, are a highly attractive prospect for this field. Here, such a sensor for NO 2 based on GaSe is presented. An ultrahigh sensitivity of 0.5 part per billion (p.p.b.) is achieved at room temperature, and the NO 2 selectivity ratios with respect to other likely interfering environmental gases are larger than 100. Moreover, no great degradation is observed after 10 days of air exposure. As a practical demonstration, the GaSe‐based sensors are also used to detect vehicle exhaust emission, and wearable GaSe‐based NO 2 sensors are presented and tested. Based on the results obtained in this work, it is believed that GaSe‐based sensors can be used for the detection of NO 2 in real‐world applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI