[논문]Ion channel-based flexible temperature sensor with humidity insensitivity

Kim, Jung-Soo; Chun, Kyoung-Yong; Han, Chang-Soo

doi:10.1016/j.sna.2018.01.025

Ion channel-based flexible temperature sensor with humidity insensitivity

Sensors and actuators. A, Physical, v.271, 2018년, pp.139 - 145

Kim, Jung-Soo (School of Mechanical Engineering, Korea University) , Chun, Kyoung-Yong (Development Group for Creative Research Engineers of Convergence Mechanical System, Korea University) , Han, Chang-Soo (School of Mechanical Engineering, Korea University)

Abstract ▼ AI-Helper

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 μW/mm2), high linearity (R > 0.99), and a high temperature coefficient of resistance (0.022 °C−1) over the specified temperature range (20–70 °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 × 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. Highlights The flexible ion channel sensor has a linear temperature dependency with high sensitivity and high selectivity. This sensor maintains the stability of the performance against mechanical deformation and humidity changes. The extended-array sensor can measure the temperatures over a wide range with a great deal of flexibility.

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Ion channel-based flexible temperature sensor with humidity insensitivity

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Ion channel-based flexible temperature sensor with humidity insensitivity

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