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Ion channel-based flexible temperature sensor with humidity insensitivity

Authors
Kim, Jung-SooChun, Kyoung-YongHan, Chang-Soo
Issue Date
1-3월-2018
Publisher
ELSEVIER SCIENCE SA
Keywords
Temperature; Sensor; Flexible; Ion channel; Humidity
Citation
SENSORS AND ACTUATORS A-PHYSICAL, v.271, pp.139 - 145
Indexed
SCIE
SCOPUS
Journal Title
SENSORS AND ACTUATORS A-PHYSICAL
Volume
271
Start Page
139
End Page
145
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/76770
DOI
10.1016/j.sna.2018.01.025
ISSN
0924-4247
Abstract
We report an energy-efficient and mechanically durable temperature sensor with high selectivity and sensitivity. This sensor structure is inspired by ion channels in the cell membranes of living organisms that enable them to respond to temperature changes. For this purpose, a pore membrane and ionic solution are used for measuring the temperature based on the electrophoretic transport of ions. As the results indicate, we achieve a low consumption of power (8 mu W/mm(2)), high linearity (R> 0.99), and a high temperature coefficient of resistance (0.022 degrees C-1) over the specified temperature range (20-70 degrees C). Our sensor intrinsically exhibits high selectivity to the humidity change and high signal stability to mechanical deformation. In addition, we also fabricate a flexible 3 x 3 matrix ion-channel-based temperature sensor, and demonstrate that it is capable of highly selective, sensitive, and flexible measurement (or area mapping) of the temperature over a specified area. (C) 2018 Elsevier B.V. All rights reserved.
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공과대학 (기계공학부)
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