Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Cheol-Hwee Shim"'
Autor:
Juyeon Han, Kanhu Charan Nayak, Cheol-Hwee Shim, Pil-Ryung Cha, Hyunjoo Choi, Jae-Pyong Ahn, Kon-Bae Lee
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 4400-4409 (2024)
We have developed an aluminum nitride (AlN) manufacturing method that operates below the melting point of aluminum. To examine the nucleation and growth mechanisms of AlN during the synthesis process, we used a variety of characterization techniques,
Externí odkaz:
https://doaj.org/article/86f07ca8122d4afe88ee05d2e563a749
Publikováno v:
Journal of Materials Research and Technology, Vol 21, Iss , Pp 4526-4536 (2022)
This study developed and optimized a novel and cost-effective method for producing AlN particles by heating Al powder in a nitrogen atmosphere at temperatures lower than the melting point of Al. As the size of the initial Al particles decreased, nitr
Externí odkaz:
https://doaj.org/article/b2901cc3fbf841a189f7d45f90eb9b9a
Autor:
So-Yeon Lee, Kyung Ryoul Park, Sung-gyu Kang, Ji-Hoon Lee, Eun-chae Jeon, Cheol-Hwee Shim, Jae-Pyoung Ahn, Dong-Ik Kim, Heung Nam Han, Young-Chang Joo, Changsoon Kim, In-Suk Choi
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-8 (2019)
Cracking in thin films is usually associated with failure. Here, the authors use an electron beam to selectively irradiate a copper thin film on a polymer substrate and introduce designed cracks under tension to make a strain responsive organic light
Externí odkaz:
https://doaj.org/article/06804a6c81ec41129b863fba561be102
Publikováno v:
ACS Omega, Vol 3, Iss 11, Pp 14562-14566 (2018)
Externí odkaz:
https://doaj.org/article/b3251657a65f4c57bc8b5e345427f6ce
Autor:
Varsha Singh, Anil Kumar Paidi, Cheol-Hwee Shim, So-Hee Kim, Sung-Ok Won, Jitendra Pal Singh, Sangsul Lee, Keun-Hwa Chae
Publikováno v:
Crystals, Vol 11, Iss 5, p 490 (2021)
For the present work, calcite nanocrystals were grown by annealing precursors at 500 °C. These precursors were obtained by three different thermal schemes. Among these schemes, two involve heating at 100 °C for 16 h and 16 + 24 h, respectively. In
Externí odkaz:
https://doaj.org/article/e95fcc5975174bf2b83b0545f7084818
Autor:
Jitendra Pal Singh, Byeong-Hyeon Lee, Weon Cheol Lim, Cheol-Hwee Shim, Jihye Lee, Keun Hwa Chae
Publikováno v:
Royal Society Open Science, Vol 5, Iss 10 (2018)
Zinc ferrite thin films were deposited using a radio-frequency-sputtering method on glass substrates. As-deposited films were annealed at 200°C for 1, 3 and 5 h, respectively. X-ray diffraction studies revealed the amorphous nature of as-grown and a
Externí odkaz:
https://doaj.org/article/ce5330a08cea4534a215da6bb8adcc9a
Publikováno v:
Journal of Manufacturing Processes. 83:471-487
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fbbe82aa61e3179d1333cd055abfa33
https://doi.org/10.1016/j.jmapro.2022.09.013
https://doi.org/10.1016/j.jmapro.2022.09.013
Preparation of Al/AlN composites by in-situ reaction in the nitridation-induced self-forming process
Publikováno v:
Journal of Composite Materials. 56:3653-3658
Recently, we developed and reported an easy and cost-effective process called nitridation-induced self-forming Al composites (NISFAC) for manufacturing aluminum matrix composites from Al powder. In this process, AlN is formed by an in situ reaction b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57a0e529403377b96c52ced5260fcb20
https://doi.org/10.1177/00219983221119271
https://doi.org/10.1177/00219983221119271
Autor:
Ji Hoon Kang, Cheol-Hwee Shim, HyeYoung Hyun, Dae-Myeong Geum, Min-Chul Park, Soo Seok Kang, Kisung Kwak, Jin Dong Song, Sanghyeon Kim, Won Jun Choi, Suk-Ho Choi
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-8 (2019)
Scientific Reports
Scientific Reports
Short-wave infrared (SWIR) detectors and emitters have a high potential value in several fields of applications, including the internet of things (IoT) and advanced driver assistance systems (ADAS), gas sensing. Indium Gallium Arsenide (InGaAs) photo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3bfc3194e5ebe45f15af533a6c2f6e27
http://link.springer.com/article/10.1038/s41598-019-49300-z
http://link.springer.com/article/10.1038/s41598-019-49300-z
Publikováno v:
Journal of nanoscience and nanotechnology. 20(11)
For the present work, calcite nanoparticles was synthesized from calcium nitrate by annealing precursor at 300, 400, 500 and 600°C. Ca K-edge near edge X-ray absorption fine structure measurements revealed spectral features characteristics to the am
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6091fde171b85ffb7eddb10f9ea02e1
https://pubmed.ncbi.nlm.nih.gov/32604503
https://pubmed.ncbi.nlm.nih.gov/32604503