Graphite on paper as material for sensitive thermoresistive sensors
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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.
Journal of Materials Chemistry C
© 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.
Microelectromechanical Systems (MEMS)