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Korean J. Met. Mater.
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Author Index
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Author is indexed since 2016
Author :
Myung Sik Choi
6 Articles
963
Surface Defect Generation on SnO
2
Nanoparticles Using High-Energy Ball Milling for H
2
S Gas Sensor Applications
Changyu Kim, Sung Wook Ye, Jiyeon Shin, Jimyeong Park, Se Hun Lee, Jeung-Soo Huh, Ali Mirzaei, Jong Wook Roh, Myung Sik Choi
Korean J. Met. Mater.
2024;62(12):963-971. Published online 2024 Nov 29
DOI:
https://doi.org/10.3365/KJMM.2024.62.12.963
Abstract
Hydrogen sulfide (H
2
S) is a highly toxic and dangerous gas with a flammable and corrosive nature, making the development of reliable gas sensors for its detection vital. This study investigated the enhancement in H
2
S gas sensing performance of commercial SnO
2
powders after high-energy milling. SnO
2
powders were subjected to high-energy.....
More
414
Gadolinium-Doped CeO
2
Gas Sensor for H
2
S Sensing
Changhyun Jin, Sangwoo Kim, Dong Eung Kim, Ali Mirzaei, Jong Wook Roh, Sun-Woo Choi, Myung Sik Choi
Korean J. Met. Mater.
2023;61(6):414-421. Published online 2023 May 18
DOI:
https://doi.org/10.3365/KJMM.2023.61.6.414
Abstract
Dihydrogen sulfide (H
2
S) gas has a flammable nature and is one of the most toxic and dangerous gases. Even small concentrations can be fatal to humans. Herein, we investigated the H
2
S gas-sensing features of commercial pristine cerium oxide (CeO
2
) and gadolinium (Gd)-doped CeO
2
(GDC) nanoparticles. First, the sensing materials.....
More
Web of Science 2
Crossref 4
566
Extended Energy Conservation Law in Alloys: the Absence of Energy Non-Equilibrium
Myung Sik Choi, Han Gil Na, Changhyun Jin, Kyu Hyoung Lee
Korean J. Met. Mater.
2020;58(8):566-572. Published online 2020 Jul 27
DOI:
https://doi.org/10.3365/KJMM.2020.58.8.566
Abstract
Assuming that many of the materials produced in a non-equilibrium state remain unchanged, an extended space–energy conservation law was proposed based on the existing energy conservation law. In the present study, by analyzing the well developed equilibrium binary phase diagram of iron (Fe) – carbon (C), we show that energy.....
More
Web of Science 3
Crossref 3
732
Low-Temperature H
2
S Sensors Based on Si-Coated SnO
2
Nanowires
Myung Sik Choi, Ali Mirzaei, Jae Hoon Bang, Han Gil Na, Changhyun Jin, Wansik Oum, Seungmin Han, Sang Sub Kim, Hyoun Woo Kim
Korean J. Met. Mater.
2019;57(11):732-740. Published online 2019 Nov 5
DOI:
https://doi.org/10.3365/KJMM.2019.57.11.732
Abstract
To attain high life standards, it is important to develop high-performance non-toxic gas sensors for public safety, environmental pollutant control, industrial processes, etc. Because reports on single element semiconductor-coated semiconducting metal oxides for sensing applications are rare, we synthesized SnO
2
nanowires and coated them with a 5 nm-thick or 10.....
More
Crossref 5
492
Effect of E-Beams Irradiation Dose on the Sensing Properties of Pt-Functionalized Reduced Graphene Oxides Following Annealing of the 6 nm-Thick Pt Layer
Yong Jung Kwon, Ali Mirzaei, Han Gil Na, Sung Yong Kang, Myung Sik Choi, Jae Hoon Bang, Jaegab Lee, Inpil Kang, Sang Sub Kim, Hyoun Woo Kim
Korean J. Met. Mater.
2017;55(7):492-502. Published online 2017 Jul 4
DOI:
https://doi.org/10.3365/KJMM.2017.55.7.492
Abstract
Pt-functionalized RGO samples were prepared and subsequently irradiated with 2-MeV electron beams (e-beams). The effect of e-beam dose on the structural, electrical, and gas sensing properties of the samples was investigated. E-beam irradiation was found to induce significant microstructural changes in the Pt-functionalized RGO. Measurements of NO
2
sensing at room.....
More
Crossref 2
631
Synthesis of Mesoporous CuO
x
Using Inverse Micelle Sol–gel Process for NO
2
Gas Sensing
Sung Gue Heo, Sangwoo Kim, Seok-Jun Seo, Jae Jin Sim, Jiyeon Shin, Ali Mirzaei, Myung Sik Choi
Korean J. Met. Mater.
2000;62(8):631-638. Published online 2024 Jul 31
DOI:
https://doi.org/10.3365/KJMM.2024.62.8.631
Abstract
Nitrogen dioxide (NO
2
) is a highly dangerous gas, mostly emitting emitted from fossil fuels, and a major contributor to air pollution. It has negatively effects affects on the human health as well asand contributes to environmental issues like acid rain. In this study, mesoporous CuO
x
nanoparticles (NPs) were successfully synthesized.....
More
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