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Proceedings Paper

Fabrication of printed ITO sensor for the ammonia hydroxide detection
Author(s): Seok-hwan Lee; Jieun Koo; Soohoon Jung; Moonjin Lee; Jung-Yeul Jung; Jiho Chang
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Paper Abstract

Monitoring the hazardous and noxious substances (HNS) is a very important issue for mitigating the influence of catastrophic accidents in ocean and coastal areas. However, research on the HNS sensor is just in the beginning stage. In this study, we proposed a new HNS sensor using a printed ITO layer. We carried out a series of experiments of detecting the NH4OH and seawater solution to investigate the feasibility as a HNS sensor. The resistance of ITO layer dropped abruptly when it soaked into the solutions. The resistance change (δR) was linearly correlated with the NH4OH concentration of the solution, also it can be classified into two states; one is the transition stage, the other is the stabilized stage. The former is considered to be caused by the large capacitance of the electrical double layer (EDL) on the ITO surface. Also, the ITO layer showed considerable chemical stability within our experimental condition. In this paper, we have investigated the feasibility of printed ITO layer as a sensitive and cheap HNS sensor.

Paper Details

Date Published: 1 July 2015
PDF: 5 pages
Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 96553E (1 July 2015); doi: 10.1117/12.2193885
Show Author Affiliations
Seok-hwan Lee, Korea Maritime and Ocean Univ. (Korea, Republic of)
Jieun Koo, Korea Maritime and Ocean Univ. (Korea, Republic of)
Soohoon Jung, Korea Maritime and Ocean Univ. (Korea, Republic of)
Moonjin Lee, Korea Research Institute of Ships and Ocean Engineering (Korea, Republic of)
Jung-Yeul Jung, Korea Research Institute of Ships and Ocean Engineering (Korea, Republic of)
Jiho Chang, Korea Maritime and Ocean Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 9655:
Fifth Asia-Pacific Optical Sensors Conference
Byoungho Lee; Sang-Bae Lee; Yunjiang Rao, Editor(s)

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