Zobrazeno 1 - 10
of 168
pro vyhledávání: '"C.-H. Kwak"'
Publikováno v:
Radioengineering, Vol 21, Iss 2, Pp 746-751 (2012)
In this paper, the third order intermodulation distortion (IMD3) of three-stage power amplifier (PA) is analyzed using the Volterra series. The analysis explains how the total IMD3 of the three-stage power amplifier can be reduced by the first-stage
Externí odkaz:
https://doaj.org/article/6ca9e9be73ee47b49184c13d5a6a4ee8
Autor:
M G Kang, K H Kim, H W Park, J S Koh, J R Park, Y H Park, S J Hwang, Y H Jeong, C H Kwak, J H Ahn, H N Song, J Y Hwang
Publikováno v:
European Heart Journal. 42
Background With advances in treatment of ischemic heart disease and cancer treatment, use of percutaneous coronary intervention (PCI) in cancer survivors and patients with active cancer (AC) is expanding. Objectives The purpose of this study was to d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cced7588252d5a4ce137cc04c0993271
https://doi.org/10.1093/eurheartj/ehab724.2858
https://doi.org/10.1093/eurheartj/ehab724.2858
Akademický článek
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Publikováno v:
Journal of Crystal Growth. 346:56-60
High-quality Zn 1− x Co x O (ZnCoO) thin films with different Co concentrations ( x =0−0.07) were synthesized on Al 2 O 3 substrates using a radio-frequency magnetron sputtering process. The structural, chemical, optical, and electrical propertie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72acd5a526399fb6aba087e46ad8eabe
https://doi.org/10.1016/j.jcrysgro.2012.02.022
https://doi.org/10.1016/j.jcrysgro.2012.02.022
Autor:
Seok Kim, Sang-Wook Han, Zhenlan Jin, Seungwan Seo, Chang-In Park, Y.-B. Lee, Bum-Kyu Kim, Jongyoon Kim, C.-H. Kwak, D.W. Jeong
Publikováno v:
Current Applied Physics. 11:S328-S332
This study examined the micro-structural and electrical properties of nitrogen-ion implanted ZnO nanorods. Nitrogen ions (N + s) with energy of 50 keV and beam flux of 10 16 particles/cm 2 were implanted on vertically-aligned ZnO nanorods. Energy dis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f0313b2645d8997bd3662b17cc6ccb3
https://doi.org/10.1016/j.cap.2010.11.068
https://doi.org/10.1016/j.cap.2010.11.068
Publikováno v:
Journal of Crystal Growth. 314:264-267
This study examined the structural properties of ZnO nanorods grown on Ti-buffer layers with different surface roughnesses of 1.5 and 4.0 nm. Vertically aligned ZnO nanorods were synthesized on Al 2 O 3 substrates with a Ti-buffer layer by metal-orga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ea66d76c9df512f4eb9cf3dc3d42833
https://doi.org/10.1016/j.jcrysgro.2010.10.066
https://doi.org/10.1016/j.jcrysgro.2010.10.066
Publikováno v:
Journal of Crystal Growth. 312:2093-2097
High quality Zn 1− x Fe x O thin films were deposited on α -sapphire substrates by RF magnetron sputtering. X-ray absorption fine structure measurements showed that the chemical valence of Fe ions in the films was a mixture of 2+ and 3+ states, an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0faae4d5801586f93416f4e9146543d9
https://doi.org/10.1016/j.jcrysgro.2010.04.033
https://doi.org/10.1016/j.jcrysgro.2010.04.033
Autor:
S.-Y. Seo, C.-H. Kwak, Chang-In Park, Yong-Dae Choi, Suri Park, B.-H. Kim, Yunhwan Lee, Soon-Jae Kim, Sang-Wook Han
Publikováno v:
Journal of the Korean Physical Society. 56:2050-2054
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d34a57c31e7a4cf3cd22487be73c85e
https://doi.org/10.3938/jkps.56.2050
https://doi.org/10.3938/jkps.56.2050
Autor:
Byung-Hyuk Kim, Chang-In Park, S.-Y. Seo, Seung-A Han, Seok-Won Kim, Sang-Hong Park, C.-H. Kwak
Publikováno v:
Journal of Crystal Growth. 311:4491-4494
Vertically well-aligned ZnO nanorods were fabricated in-situ and ex-situ on ZnO homo-buffer layers using catalyst-free metal-organic chemical vapor deposition. Field-emission electron microscopy measurements demonstrated that the nanorods were well a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a57edc72d7a7f8adcc91f7b21a3cacb
https://doi.org/10.1016/j.jcrysgro.2009.08.010
https://doi.org/10.1016/j.jcrysgro.2009.08.010
Autor:
S.-Y. Seo, B.-H. Kim, Chul-Hyun Park, S. H. Park, S. H. Kim, Sang-Wook Han, Yung Woo Park, C.-H. Kwak
Publikováno v:
Journal of the Korean Physical Society. 55:94-97
High-quality ZnO nanorods were synthesized on stainless-steel substrates at room temperature in NaCl solutions with NaCl concentrations of 3.5 – 5.0 wt%. The ZnO nanorods were grown from a Zn film on a stainless-steel substrate in a NaCl solution w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e34610b12ad75d345fb7d5977dfc3de9
https://doi.org/10.3938/jkps.55.94
https://doi.org/10.3938/jkps.55.94