Graphite on paper as material for sensitive thermoresistive sensors

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Toan, Dinh
Hoang-Phuong, Phan
Dzung, Viet Dao
Woodfield, Peter
Qamara, Afzaal
Nam-Trung, Nguyen
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2015
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Abstract

This paper reports on the thermoresistive properties of graphite on paper (GOP). A negative temperature coefficient of resistance (TCR) from -2900 to -4400 ppm K-1 was observed for the GOP. This negative and large TCR is attributed to an increase in the thermionic emission current over a low potential barrier with increasing temperature. The potential barrier was found to be 33 meV between the graphite grains. The paper also demonstrates the use of the GOP in a highly sensitive (0.83 mV (m s-1)-0.8 mW-1) GOP-based anemometer, indicating strong feasibility of using this material for low-cost and sensitive thermal sensing applications.

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Journal of Materials Chemistry C

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3

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© 2015 Royal Society of Chemistry. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal website for access to the definitive, published version.

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Macromolecular and materials chemistry

Physical chemistry

Materials engineering

Microelectromechanical systems (MEMS)

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