Microfiber-based sensor for measuring uric acid concentrations
Microfiber sensor is proposed and demonstrated using a fiber optic displacement sensor (FODS) based on intensity modulation technique for measurement of different concentrations of uric acid. The proposed sensor uses singlemode fiber (SMF) tapered using flame brushing technique to enhance the e...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Universiti Teknikal Malaysia Melaka
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/66883/ http://irep.iium.edu.my/66883/ http://irep.iium.edu.my/66883/1/66883_Microfiber-based%20sensor%20for%20measuring%20uric%20acid_article.pdf http://irep.iium.edu.my/66883/2/66883_Microfiber-based%20sensor%20for%20measuring%20uric%20acid_scopus.pdf |
| Summary: | Microfiber sensor is proposed and demonstrated
using a fiber optic displacement sensor (FODS) based on
intensity modulation technique for measurement of different
concentrations of uric acid. The proposed sensor uses singlemode
fiber (SMF) tapered using flame brushing technique to
enhance the evanescent field around the fiber core to interact
with the uric acid. The tapered area is bent manually and sets
vertically on a clamp, facing the mirror in the beaker. It is
placed within the linear range of a sensor’s displacement curve
of 0 to 5000 µm. The calibration of tapered fiber sensor was done
both in the air and diluted water. The sensor is capable of
measuring the concentrations of uric acid from 100 ppm to 500
ppm with a measured sensitivity of 0.0218 dBm/ppm. The
linearity and resolution of the proposed sensor are 99.21% and
28.219 ppm, respectively. In addition, the proposed microfiber
FODS sensor using SMF exhibit good stability and repeatability.
It provides numerous advantages in terms of simple design, less
production cost and operation without forfeiting its sensitivity. |
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