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Carbon nanowire‐based temperature sensor
Author(s) -
Zaitsev Alexander M.,
Levine Alfred M.,
Zaidi Sohail H.
Publication year - 2007
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200723152
Subject(s) - nanowire , materials science , graphite , atmospheric temperature range , diamond , fabrication , optoelectronics , heterojunction , nanotechnology , composite material , medicine , physics , alternative medicine , pathology , meteorology
Abstract A temperature sensor based on an array of carbon nanowires written by a 30 keV Ga + focused ion beam on diamond substrate has been developed. The temperature sensitivity of the electrical conductuctance between the nanowires is explained by the thermal activation of charge carriers in a heterostructure graphite‐diamond over an energy barrier of 0.24 eV. The sensor shows an exponential increase of current with temperature at a rate of 0.1 dB/°C in the temperature range from 40 to 140 °C. The advantages of the novel carbon nanowire sensor are light blindness, compatibility with carbon nanotechnology, reproducibility and simplicity of fabrication. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)