期刊
APPLIED PHYSICS LETTERS
卷 107, 期 5, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4928247
关键词
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资金
- National 973 Program [2012CB921803, 2011CBA00205]
- National Natural Science Foundation of China [61322503, 61225026, 61475069]
A graphene-based electrical current sensor is proposed utilizing a microfiber coil resonator. Monolayer graphene sheet with a large sheet resistance is transferred onto the surface of a glass capillary rod. A microfiber is spirally wrapped around the graphene sheet to form a coil resonator. Heat generated from electrical current shifts the resonant wavelength because of the thermal effect in the microfiber resonator. The sensor exhibits a very good performance with a high sensitivity of 67.297 mu m/A(2), which is two orders of magnitude higher than that reported earlier. Our results show that microfiber-graphene-integrated devices have great potential for miniature and highly sensitive fiber sensors for monitoring electrical current. (C) 2015 AIP Publishing LLC.
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