期刊
SENSORS
卷 14, 期 5, 页码 8423-8429出版社
MDPI AG
DOI: 10.3390/s140508423
关键词
microfiber; current sensor; sensitivity; chrome-nickel wire
资金
- National Science Found for Distinguished Young Scholars of China [61225023]
- National Natural Science Foundation of China [61177074, 11004085, 11104117]
- Project of Science and Technology New Star of Zhujiang in Guangzhou city [2012J2200062]
- Planned Science and Technology Project of Guangzhou [2012J5100028]
- Guangdong Natural Science Foundation [S2013030013302]
We obtain an extremely high current sensitivity by wrapping a section of microfiber on a thin-diameter chromium-nickel wire. Our detected current sensitivity is as high as 220.65 nm/A(2) for a structure length of only 35 mu m. Such sensitivity is two orders of magnitude higher than the counterparts reported in the literature. Analysis shows that a higher resistivity or/and a thinner diameter of the metal wire may produce higher sensitivity. The effects of varying the structure parameters on sensitivity are discussed. The presented structure has potential for low-current sensing or highly electrically-tunable filtering applications.
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