Liquid Concentration Sensing Properties of Microfibers with a Nanoscale-Structured Film
ZHOU Guo-Rui, LV Hai-Bing, YUAN Xiao-Dong, ZHOU Hai, LIU Hao, LI Ke-Xin, CHENG Xiao-Feng, MIAO Xin-Xiang**
Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900
Abstract ：A type of compact solution concentration sensor based on a microfiber with a nanoscale-structured film is proposed and demonstrated experimentally. Additional loss at different solution concentrations is calculated by means of the three-dimensional finite-difference time-domain (3D-FDTD) method. The microfiber is fabricated by using the flame-heated scanning technique. Nanoscale-structured film is coated on the microfiber surface, which is assembled as a sensing unit. The sensitivity of this kind of sensor increases with the decreasing diameters of the microfiber. When the diameter of the microfiber is 2 μm, a minimum concentration sensitivity of 1% (under 450 s measuring time) is demonstrated in the experiment. Higher sensitivity can be attained when the solution concentration is higher. The sensing properties of this microfiber with the nanoscale-structured film may provide opportunities for new applications in optical sensing devices.
出版日期: 2015-02-26
:
42.79.-e
(Optical elements, devices, and systems)
51.70.+f
(Optical and dielectric properties)
07.60.Vg
(Fiber-optic instruments)
引用本文:
. [J]. 中国物理快报, 2015, 32(03): 34202-034202.
链接本文:
https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/32/3/034202
或
https://cpl.iphy.ac.cn/CN/Y2015/V32/I03/34202
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2015, Vol. 32 
