Planar Optical Waveguide Platform for Gas Sensing Using Liquid Crystal

被引：16

作者：

Ho, Wing Fat ^{[1
]}

Chan, Hau Ping ^{[1
]}

Yang, Kun Lin ^{[2
]}

机构：

[1] City Univ Hong Kong, Kowloon, Hong Kong, Peoples R China

[2] Natl Univ Singapore, Singapore 119279, Singapore

来源：

IEEE SENSORS JOURNAL | 2013年 / 13卷 / 07期

关键词：

Ethanol; liquid crystal (LCs); optical sensor; planar lightwave waveguide; VAPOR;

D O I：

10.1109/JSEN.2013.2254596

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We propose a simple method for detecting chemical gases using liquid crystal on a planar optical waveguide. Through measuring waveguide output power, this method detects changes in the director of liquid crystal molecules as well as the refractive index, which attributed to gas exposure. We demonstrate this idea by constructing a compact and fast-response ethanol gas sensor.

引用

页码：2521 / 2522

页数：2

共 7 条

[1] Acharya BR, 2010, LASER FOCUS WORLD, V46, P68
[2] Using copper perchlorate doped liquid crystals for the detection of organophosphonate vapor
Bungabong, Maricar L.
Ong, Peng Bin
Yang, Kun-Lin
[J]. SENSORS AND ACTUATORS B-CHEMICAL, 2010, 148 (02): : 420 - 426
[3] Detection of organophosphorous nerve agents using liquid crystals supported on chemically functionalized surfaces
Cadwell, Katie D.
Lockwood, Nathan A.
Nellis, Barbara A.
Alf, Mahriah E.
Willis, Colin R.
Abbott, Nicholas L.
[J]. SENSORS AND ACTUATORS B-CHEMICAL, 2007, 128 (01) : 91 - 98
[4] Solvent Vapour Detection with Cholesteric Liquid Crystals-Optical and Mass-Sensitive Evaluation of the Sensor Mechanism
Mujahid, Adnan
Stathopulos, Helen
Lieberzeit, Peter A.
Dickert, Franz L.
[J]. SENSORS, 2010, 10 (05): : 4887 - 4897
[5] Fiber optic electric field sensors using polymer-dispersed liquid crystal coatings and evanescent field interactions
Tabib-Azar, M
Sutapun, B
Srikhirin, T
Lando, J
Adamovsky, G
[J]. SENSORS AND ACTUATORS A-PHYSICAL, 2000, 84 (1-2) : 134 - 139
[6] Polymer planar waveguide device using inverted channel structure with upper liquid crystal cladding
Xu, Y.
Uddin, M. A.
Chung, P. S.
Chan, H. P.
[J]. OPTICS EXPRESS, 2009, 17 (10): : 7837 - 7843
[7] A novel method for label-free detection of ricin using liquid crystals supported on chemically functionalized surfaces
Zhao, Ya-Bin
Yu, Jian-Hua
Zhao, Hong-Fei
Tong, Chao-Yang
Wang, Pu-Hong
[J]. SENSORS AND ACTUATORS B-CHEMICAL, 2011, 155 (01) : 351 - 356

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