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Proceedings Paper

Gas sensitive material on the basis of cholesteric-nematic mixture doped carbon nanotubes for optoelectronic NH3 gas sensor
Author(s): Vasyl S. Petryshak; Maria V. Vistak; Orest Y. Sushynkyi; Zinoviy M. Mikityuk; Hryhoriy I. Barylo; Maksat Kalimoldayev; Piotr Kisała; Azamat Annabaev
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Paper Abstract

For nowadays the main goal for using the sensors are the investigations the new gas sensitive materials. Optical gas sensors are characterized by most of the high response. Such sensors distinguished by the high sensitivity, selectivity and stability and have long-term operation1. The principle of operation is based on the absorption of NH3 gas by sensitive element of primary transducer and changing the spectral characteristics. Principle of gas sensor operation is based on the registration of shift of the wavelength minimum in spectral characteristics of cholesteric-nematic mixture (CNM). In paper as sensitive material used the CNM on the basis of BLO-61 cholesteric liquid crystal (CLC) with 5CB nematic liquid crystal (NLC) doped by single and multiwall carbon nanotubes. The optimal nanocomposite structure composition to obtain the maximum value of spectral sensitivity coefficient was determined. In paper was found the increasing the nanotubes concentration in CNM leads to increasing the spectral sensitivity coefficient independently of 5CB concentration in CNM, but the maximum nanotubes concentration was chosen to take in to account the optical transparency of experimental samples. Gas sensitive material on the basis of cholesteric-nematic mixture doped carbon nanotubes for optoelectronic NH3 gas sensor.

Paper Details

Date Published: 7 August 2017
PDF: 7 pages
Proc. SPIE 10445, Photonics Applications in Astronomy, Communications, Industry, and High Energy Physics Experiments 2017, 104455C (7 August 2017); doi: 10.1117/12.2281015
Show Author Affiliations
Vasyl S. Petryshak, Lviv Polytechnic National Univ. (Ukraine)
Maria V. Vistak, Lviv National Medical Univ. (Ukraine)
Orest Y. Sushynkyi, Lviv Polytechnic National Univ. (Ukraine)
Zinoviy M. Mikityuk, Lviv Polytechnic National Univ. (Ukraine)
Hryhoriy I. Barylo, Lviv Polytechnic National Univ. (Ukraine)
Maksat Kalimoldayev, Institute of Information and Computational Technologies (Kazakhstan)
Piotr Kisała, Lublin Univ. of Technology (Poland)
Azamat Annabaev, Lublin Univ. of Technology (Poland)


Published in SPIE Proceedings Vol. 10445:
Photonics Applications in Astronomy, Communications, Industry, and High Energy Physics Experiments 2017
Ryszard S. Romaniuk; Maciej Linczuk, Editor(s)

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