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Sensors 2010, 10(4), 3597-3610; doi:10.3390/s100403597

Flexible Temperature Sensor Array Based on a Graphite-Polydimethylsiloxane Composite

Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan
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Author to whom correspondence should be addressed.
Received: 12 January 2010 / Revised: 12 March 2010 / Accepted: 20 March 2010 / Published: 9 April 2010
(This article belongs to the Section Chemical Sensors)
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Abstract

This paper presents a novel method to fabricate temperature sensor arrays by dispensing a graphite-polydimethylsiloxane composite on flexible polyimide films. The fabricated temperature sensor array has 64 sensing cells in a 4 × 4 cm2 area. The sensor array can be used as humanoid artificial skin for sensation system of robots. Interdigitated copper electrodes were patterned on the flexible polyimide substrate for determining the resistivity change of the composites subjected to ambient temperature variations. Polydimethylsiloxane was used as the matrix. Composites of different graphite volume fractions for large dynamic range from 30 ºC to 110 ºC have been investigated. Our experiments showed that graphite powder provided the composite high temperature sensitivity. The fabricated temperature sensor array has been tested. The detected temperature contours are in good agreement with the shapes and magnitudes of different heat sources. View Full-Text
Keywords: composite; temperature sensor array; flexible substrate composite; temperature sensor array; flexible substrate
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Shih, W.-P.; Tsao, L.-C.; Lee, C.-W.; Cheng, M.-Y.; Chang, C.; Yang, Y.-J.; Fan, K.-C. Flexible Temperature Sensor Array Based on a Graphite-Polydimethylsiloxane Composite. Sensors 2010, 10, 3597-3610.

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