Zobrazeno 1 - 10 of 11 pro vyhledávání: '"Ji-young Roh"'
2
Arrangement of polyhedral units for [0001]-symmetrical tilt grain boundaries in zinc oxide
Autor: Kazutoshi Inoue, Kazuaki Kawahara, Mitsuhiro Saito, Ji Young Roh, Yuichi Ikuhara, Motoko Kotani
Publikováno v: Acta Materialia. 212:116864
Polycrystalline ZnO is used in a wide variety of electrical applications, and its properties are largely influenced by crystalline defects, such as grain boundaries (GBs). Therefore, in this study, the atomic structures of [0001]-symmetrical tilt GBs
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1dd37b7feda084d5da8481af4bb04a43
https://doi.org/10.1016/j.actamat.2021.116864
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3
Grain Boundary Plane Effect on Pr Segregation Site in ZnO Σ13 [0001] Symmetric Tilt Grain Boundaries
Autor: Yukio Sato, Yuichi Ikuhara, Ji Young Roh
Publikováno v: Journal of the American Ceramic Society. 98:1932-1936
As grain boundary (GB) and GB segregation often have significant impact on various properties of polycrystalline materials, their atomic structures as well as the location of segregated dopant should be intensively investigated. We have thus reported
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::59b17a73d47767685c82390406d8c905
https://doi.org/10.1111/jace.13536
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6
Improvement of the Tool Life of a Micro-End Mill Using Nano-Sized SiC/Ni Electroplating Method
Autor: Sung-Hoon Ahn, Gyu-Beom Jang, Kwang-Su Kim, Shin Young Park, Ji Young Roh, Caroline Sunyong Lee
Publikováno v: Journal of Nanoscience and Nanotechnology. 12:3376-3379
High mechanical properties of a tungsten carbide micro-end-mill tool was achieved by extending its tool life by electroplating nano-sized SiC particles (< 100 nm) that had a hardness similar to diamond in a nickel-based material. The co-electroplatin
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7569aef8c2e5411289aef93794936f3
https://doi.org/10.1166/jnn.2012.5547
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7
Synthesis of MWNTs using thermal chemical vapor deposition for the application of a counter electrode for DSSCs
Autor: Caroline Sunyong Lee, Yang-Hee Kim, Ji Young Roh
Publikováno v: Current Applied Physics. 11:S69-S72
MWNTs (Multi-wall Carbon nanotubes) were grown using thermal CVD at a low temperature of 530 °C to be fabricated as a counter electrode of dye-sensitized solar cells (DSSCs). Ammonia gas and acetylene gas were introduced as reactive gas sources with
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f2800934fb1b113b089af39297840244
https://doi.org/10.1016/j.cap.2011.07.011
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9
Microstructures and improvedJc–Hcharacteristics of Cl-containing YBCO thin films prepared by the fluorine-free MOD method
Autor: Kohji Kishio, Jun-ichi Shimoyama, Genki Honda, Takanori Motoki, Yuichi Ikuhara, Shigeru Horii, Hiraku Ogino, Tetsuya Tohei, Toshiya Doi, Ji-young Roh, Tatsuoki Nagaishi
Publikováno v: Superconductor Science and Technology. 29:015006
Undoped, Cl-doped, (Cl, Hf) co-doped and (Cl, Sn) co-doped YBa2Cu3O y (YBCO) thin films have been prepared by the fluorine-free metal–organic decomposition (FF-MOD) method on SrTiO3(100) single-crystalline substrates. Cross-sectional microstructure
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::33d34261a381d101bc25f24574288f78
https://doi.org/10.1088/0953-2048/29/1/015006
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