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Seunghyun Cho  - - - 
Top co-authors
Sang Hun Shin

58 shared publications

Chung-Ang Univ. (Korea, Republic of)

Joo Hyun Moon

30 shared publications

Dongguk University, Gyeongju Campus, 123 Dongdae-ro, Gyeongbuk 38066, Republic of Korea

23
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22
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Publication Record
Distribution of Articles published per year 
(2000 - 2015)
Total number of journals
published in
 
12
 
Publications See all
Article 5 Reads 0 Citations Fiber-optic Temperature Sensor Using a Silicone Oil and an OTDR Jae Seok Jang, Wook Jae Yoo, Sang Hun Shin, Dong Eun Lee, Mi... Published: 01 November 2015
The Transactions of The Korean Institute of Electrical Engineers, doi: 10.5370/kiee.2015.64.11.1592
DOI See at publisher website
Article 2 Reads 2 Citations Development of a Small-Sized, Flexible, and Insertable Fiber-Optic Radiation Sensor for Gamma-Ray Spectroscopy Wook Jae Yoo, Sang Hun Shin, Dong Eun Lee, Kyoung Won Jang, ... Published: 28 August 2015
Sensors, doi: 10.3390/s150921265
DOI See at publisher website PubMed View at PubMed ABS Show/hide abstract
We fabricated a small-sized, flexible, and insertable fiber-optic radiation sensor (FORS) that is composed of a sensing probe, a plastic optical fiber (POF), a photomultiplier tube (PMT)-amplifier system, and a multichannel analyzer (MCA) to obtain the energy spectra of radioactive isotopes. As an inorganic scintillator for gamma-ray spectroscopy, a cerium-doped lutetium yttrium orthosilicate (LYSO:Ce) crystal was used and two solid-disc type radioactive isotopes with the same dimensions, cesium-137 (Cs-137) and cobalt-60 (Co-60), were used as gamma-ray emitters. We first determined the length of the LYSO:Ce crystal considering the absorption of charged particle energy and measured the gamma-ray energy spectra using the FORS. The experimental results demonstrated that the proposed FORS can be used to discriminate species of radioactive isotopes by measuring their inherent energy spectra, even when gamma-ray emitters are mixed. The relationship between the measured photon counts of the FORS and the radioactivity of Cs-137 was subsequently obtained. The amount of scintillating light generated from the FORS increased by increasing the radioactivity of Cs-137. Finally, the performance of the fabricated FORS according to the length and diameter of the POF was also evaluated. Based on the results of this study, it is anticipated that a novel FORS can be developed to accurately measure the gamma-ray energy spectrum in inaccessible locations such as narrow areas and holes.
Article 1 Read 0 Citations Fabrication and Performance Evaluation of a Scintillating Film-based Gamma Imaging Detector to Measure Gamma-ray Distrib... Sang Hun Shin, Wook Jae Yoo, Kyoung Won Jang, Seunghyun Cho,... Published: 31 May 2015
Journal of Sensor Science and Technology, doi: 10.5369/jsst.2015.24.3.202
DOI See at publisher website
Article 4 Reads 1 Citation A Fiber-Optic Sensor Using an Aqueous Solution of Sodium Chloride to Measure Temperature and Water Level Simultaneously Wook Jae Yoo, Hyeok In Sim, Sang Hun Shin, Kyoung Won Jang, ... Published: 10 October 2014
Sensors, doi: 10.3390/s141018823
DOI See at publisher website PubMed View at PubMed ABS Show/hide abstract
A fiber-optic sensor system using a multiplexed array of sensing probes based on an aqueous solution of sodium chloride (NaCl solution) and an optical time-domain reflectometer (OTDR) for simultaneous measurement of temperature and water level is proposed. By changing the temperature, the refractive index of the NaCl solution is varied and Fresnel reflection arising at the interface between the distal end of optical fiber and the NaCl solution is then also changed. We measured the modified optical power of the light reflected from the sensing probe using a portable OTDR device and also obtained the relationship between the temperature of water and the optical power. In this study, the water level was simply determined by measuring the signal difference of the optical power due to the temperature difference of individual sensing probes placed inside and outside of the water. In conclusion, we demonstrate that the temperature and water level can be obtained simultaneously by measuring optical powers of light reflected from sensing probes based on the NaCl solution. It is anticipated that the proposed fiber-optic sensor system makes it possible to remotely monitor the real-time change of temperature and water level of the spent fuel pool during a loss of power accident.
Article 0 Reads 1 Citation Feasibility study on fiber-optic goniometer for measuring knee joint angle Seon Geun Kim, Kyoung Won Jang, Wook Jae Yoo, Sang Hun Shin,... Published: 01 September 2014
Optical Review, doi: 10.1007/s10043-014-0112-z
DOI See at publisher website
Article 0 Reads 0 Citations Real-time Measurements of Water Level and Temperature using Fiber-optic Sensors Based on an OTDR Hyeok In Sim, Wook Jae Yoo, Sang Hun Shin, Jaeseok Jang, Jae... Published: 01 September 2014
The Transactions of The Korean Institute of Electrical Engineers, doi: 10.5370/kiee.2014.63.9.1239
DOI See at publisher website
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