Chan-Wook Baik
Samsung
141 Papers
597 Citations
Chan-Wook Baik is an academic researcher from Samsung. The author has contributed to research in topics: Terahertz radiation & Layer (electronics). The author has an hindex of 17, co-authored 140 publications. Previous affiliations of Chan-Wook Baik include Seoul National University.
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Papers
Third-harmonic frequency multiplication of a two-stage tapered gyrotron TWT amplifier
TL;DR: In this article, the frequency multiplication of a two-stage tapered gyrotron traveling wave tube amplifier is experimentally verified in lowvoltage and low-current operation by modulating an axis-encircling electron beam at the fundamental harmonic cyclotron frequency in the input stage.
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Radio-frequency transmission characteristics of a multi-walled carbon nanotube
Seong Chan Jun,Jung Han Choi,SeungNam Cha,Chan-Wook Baik,Sanghyo Lee,H. Jin Kim,James Hone,Jong M Kim +7 more
TL;DR: In this paper, the authors measured two-port properties of individual MWNTs using a network analyser from a frequency of 0.5 to 50 GHz and showed the frequency dependence of the equivalent resistance of MWNT, which decreases with increasing frequency.
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Fully Flexible GaN Light-Emitting Diodes through Nanovoid-Mediated Transfer
Jun-hee Choi,Eun Hyoung Cho,Yun Sung Lee,Mun-Bo Shim,Ho Young Ahn,Chan-Wook Baik,Eun Hong Lee,Ki-Hong Kim,Tae-Ho Kim,Sangwon Kim,Kyung-Sang Cho,Jongseung Yoon,Miyoung Kim,Sungwoo Hwang +13 more
TL;DR: In this article, fully flexible gallium nitride (GaN) light-emitting diodes (LEDs) are demonstrated based on a unique transfer method, where the LED structure consisting of GaN pyramid arrays are first fabricated on an amorphous glass-based template with a low-temperature gallium oxide/titanium (LT-GaN/Ti) hetero-interface, then released and embedded into a flexible or stretchable substrate using a specialized interface control.
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Heteroepitaxial Growth of GaN on Unconventional Templates and Layer-Transfer Techniques for Large-Area, Flexible/Stretchable Light-Emitting Diodes
Jun-hee Choi,Jinwoo Kim,Hyobin Yoo,Jinyun Liu,Sunil Kim,Chan-Wook Baik,Chae-Ryong Cho,Jin Gu Kang,Miyoung Kim,Paul V. Braun,Sungwoo Hwang,Tae Sung Jung +11 more
TL;DR: In this paper, the growth of single-crystal gallium nitride (GaN) on unconventional templates for large-area blue or green light-emitting diodes (LEDs) together with layer transfer onto foreign substrates can enable flexible and stretchable lighting applications.
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Current degradation mechanism of single wall carbon nanotube emitters during field emission
Jeonghee Lee,Sanghyun Lee,Won-seok Kim,H. J. Lee,Jungna Heo,T. W. Jeong,Chan-Wook Baik,Shang Hyeun Park,SeGi Yu,Jong-Bong Park,Y. W. Jin,J. M. Kim,J. W. Moon,M. A. Yoo,J. W. Nam,S. H. Cho,J. S. Ha,T. I. Yoon,J. H. Park,D. H. Choe +19 more
TL;DR: In this paper, structural deformation of emitters from thin crystalline nanotube bundle to thick amorphous-type carbon fiber was observed. But the deformation seems to relate to the current degradation, deteriorating the efficiency of field emission either by increasing the resistance of the emitters or decreasing the field enhancement factor of emitter tips.
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