Surface tension coefficient of liquid sensor based on FBG

Yalan Niu; Hanglin Lu; Li Yang; Laipeng Shao; Junhui Hu

Results in Optics (Jan 2022)

Surface tension coefficient of liquid sensor based on FBG

Yalan Niu,
Hanglin Lu,
Li Yang,
Laipeng Shao,
Junhui Hu

Affiliations

Yalan Niu: Guangxi Normal University, Guangxi Key Laboratory of Nuclear Physics and Technology, College of Physics Science and Technology, Guilin 541004, China; Guangxi Science & Technology Normal University, College of Mechanical and Electrical Engineering, Laibin 546199, China
Hanglin Lu: Guangxi Normal University, Guangxi Key Laboratory of Nuclear Physics and Technology, College of Physics Science and Technology, Guilin 541004, China
Li Yang: Guangxi Normal University, Guangxi Key Laboratory of Nuclear Physics and Technology, College of Physics Science and Technology, Guilin 541004, China
Laipeng Shao: Guangxi Normal University, Guangxi Key Laboratory of Nuclear Physics and Technology, College of Physics Science and Technology, Guilin 541004, China; Shenzhen University, Key Laboratory of Optoelectronic Devices and System of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen 518052, China
Junhui Hu: Guangxi Normal University, Guangxi Key Laboratory of Nuclear Physics and Technology, College of Physics Science and Technology, Guilin 541004, China; Corresponding author.

Journal volume & issue: Vol. 6
p. 100204

Abstract

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A highly accuracy optical fiber sensor based on a fiber Bragg grating (FBG) is proposed and demonstrated for surface tension coefficient of liquid (STCL) measurement. In the experiment, pull-off method is applied to measure the STCL, and FBG is used as a high precision tension sensor. The performance is minutely studied in the surface tension coefficient of water measurement. The experimental results showed that the Bragg wavelength can be used to assess the STCL, and the average absolute percentage deviation of measurements from the correlation of the surface tension coefficient of water is just 0.4%. In order to show that the sensor has the versatility of other STCL measurement, surface tension coefficients of NaCl solution, and sucrose solution with different concentrations are experimentally measured. The results showed that the sensor presented higher accuracy. The STCL measurement system based on FBG has the advantages of simple structure, cost-effectiveness, and high accuracy. It can offer an alternative scheme for high accuracy STCL measurement in the fields such as surface physics, surface chemistry, and medicine.

Published in Results in Optics

ISSN: 2666-9501 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics: Optics. Light
Website: https://www.journals.elsevier.com/results-in-optics

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