Journal
APPLIED PHYSICS LETTERS
Volume 102, Issue 11, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4796177
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Funding
- National Science Foundation of China [51176106, 51106093]
- Program for New Century Excellent Talents in University [NCET-10-883]
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning
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This letter reports on the measurements of the thermal conductivity along a long free-standing graphene nanoribbon (GNR) by a one-dimensional steady-state method. The GNR was cut from a single layer graphene sheet and it has the length and width of 508 and 385 mu m, respectively. It is observed from the measurements that the GNR has highly temperature dependent thermal conductivities. The values increase from 126.21 W.m(-1).K-1 to 877.32 W.m(-1).K-1 in the temperature range from -75 to 100 degrees C, with an exception of an abruptly large value of 1044.41 W.m(-1).K-1 at 50 degrees C. The electrical resistances of the GNR decrease linearly with the temperature and the absolute resistance-temperature coefficient was determined to be a pretty large value of 0.004148 K-1, indicating obvious temperature dependent electrical conductive behavior. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4796177]
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