期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 242, 期 -, 页码 645-652出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2016.11.092
关键词
Optical fibres; Lossy Mode Resonances; Ammonia sensing
资金
- UK Engineering and Physical Sciences Research Council (EPSRC grant) [EP/N002520]
- Daphne Jackson Research Fellowship - Royal Academy of Engineering
- EPSRC [EP/H02252X/1, EP/L010437/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [GR/T12408/01, EP/L010437/1] Funding Source: researchfish
The development of a highly sensitive ammonia sensor is described. The sensor is formed by deposition of a nanoscale coating of titanium dioxide, containing a porphyrin as a functional material, onto a tapered optical fibre. The titanium dioxide, coating allows coupling of light from the fundamental core mode to a lossy mode supported by the coating, thus creating a Lossy Mode Resonance (LMR) in the transmission spectrum. A change in the refractive index of the coating caused by the interaction of the porphyrin with ammonia causes a change in the centre wavelength of the LMR, allowing concentrations of ammonia in water as low as 0.1 ppm to be detected, with a response time of less than 30 s. (C) 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.
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