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Sensors 2013, 13(1), 966-974; doi:10.3390/s130100966
Article

C59N Peapods Sensing the Temperature

1,2,* , 2 and 2,*
1 State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Changping District, Beijing 102249, China 2 Department of Electronic Engineering, Tohoku University, Sendai 980-8579, Japan
* Authors to whom correspondence should be addressed.
Received: 29 November 2012 / Revised: 5 January 2013 / Accepted: 14 January 2013 / Published: 15 January 2013
(This article belongs to the Special Issue Nanotube and Nanowire Sensors)
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Abstract

We report the novel photoresponse of nanodevices made from azafullerene (C59N)-encapsulated single-walled carbon nanotubes (C59N@SWNTs), so called peapods. The photoconducting properties of a C59N@SWNT are measured over a temperature range of 10 to 300 K under a field-effect transistor configuration. It is found that the photosensitivity of C59N@SWNTs depends very sensitively on the temperature, making them an attractive candidate as a component of nanothermometers covering a wide temperature range. Our results indicate that it is possible to read the temperature by monitoring the optoelectronics signal of C59N@SWNTs. In particular, sensing low temperatures would become more convenient and easy by giving a simple light pulse.
Keywords: azafullerenes; carbon nanotubes; encapsulation; photoresponse azafullerenes; carbon nanotubes; encapsulation; photoresponse
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Li, Y.; Kaneko, T.; Hatakeyama, R. C59N Peapods Sensing the Temperature. Sensors 2013, 13, 966-974.

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