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Liquid Concentration Sensing Properties of Microfibers with a Nanoscale-Structured Film.

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Bibliographic Details
Title: Liquid Concentration Sensing Properties of Microfibers with a Nanoscale-Structured Film.
Authors: Zhou Guo-Rui1, Lv Hai-Bing1, Yuan Xiao-Dong1, Zhou Hai1, Liu Hao1, Li Ke-Xin1, Cheng Xiao-Feng1, Miao Xin-Xiang1
Source: Chinese Physics Letters. Mar2015, Vol. 32 Issue 3, p1-1. 1p.
Subjects: Microfibers, Nanofilms, Sensitivity analysis, Remote sensing, Time-domain analysis, Refractive index, Nanostructured materials
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. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
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. [ABSTRACT FROM AUTHOR]
ISSN:0256307X
DOI:10.1088/0256-307X/32/3/034202