期刊
APPLIED PHYSICS LETTERS
卷 100, 期 20, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4720074
关键词
-
资金
- US Office of Naval Research [N000140910928]
- US National Science Foundation [0900188]
We show that graphene films synthesized by chemical-vapor-deposition enables detection of trace amounts of nitrogen dioxide (NO2) and ammonia (NH3) in air at room temperature and atmospheric pressure. The gas species are detected by monitoring changes in electrical resistance of the graphene film due to gas adsorption. The sensor response time was inversely proportional to the gas concentration. Heating the film expelled chemisorbed molecules from the graphene surface enabling reversible operation. The detection limits of similar to 100 parts-per-billion (ppb) for NO2 and similar to 500 ppb for NH3 obtained using our device are markedly superior to commercially available NO2 and NH3 detectors. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4720074]
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