Search Results - "Choi, JungHun"

Design of an Impedance-Controlled Hot Snare Polypectomy Device by Thornton, CurtisLee, Choi, JungHun

“…This paper goes through the process of first designing a feedback system that allows for the measuring of impedance while using the hot snare polypectomy…”
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Development of a Segmental Bioelectrical Impedance Spectroscopy Device for Body Composition Measurement by Cannon, Thomas, Choi, JungHun

“…Whole-body bioelectrical impedance analysis for measuring body composition has been well-explored but may not be sensitive enough to changes in the trunk…”
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Covalent Functionalization of Epitaxial Graphene by Azidotrimethylsilane by Choi, Junghun, Kim, Ki-jeong, Kim, Bongsoo, Lee, Hangil, Kim, Sehun

“…Chemically modified epitaxial graphene (EG) by azidotrimethylsilane (ATS) was investigated using high-resolution photoemission spectroscopy (HRPES). Through…”
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Controlled Voltage of Hot Snare Polypectomy Device in Electrosurgical Device by Olalere, Saidi O., Choi, JungHun

“…The study aimed to understand the working procedure of the Olympus PSD-30 Electrosurgical Unit, in which a high-frequency alternating current measures the…”
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Chemical Doping of Epitaxial Graphene by Organic Free Radicals by Choi, Junghun, Lee, Hangil, Kim, Ki-jeong, Kim, Bongsoo, Kim, Sehun

“…Chemical doping of epitaxial graphene (EG) by organic free radicals (4-amino-2,2,6,6-tetramethyl-1-piperridinyloxy; 4-amino-TEMPO) was investigated using…”
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Atomic-Scale Investigation of Epitaxial Graphene Grown on 6H-SiC(0001) Using Scanning Tunneling Microscopy and Spectroscopy by Choi, Junghun, Lee, Hangil, Kim, Sehun

“…Graphene was epitaxially grown on a 6H-SiC(0001) substrate by thermal decomposition of SiC under ultrahigh vacuum conditions. Using scanning tunneling…”
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Effects of 1 MeV Electron Beam Irradiation on Multilayer Graphene Grown on 6H-SiC(0001) by Kim, Ki-jeong, Choi, Junghun, Lee, Hangil, Lee, Han-Koo, Kang, Tai-Hee, Han, Young-Hwan, Lee, Byung-Cheol, Kim, Sehun, Kim, Bongsoo

“…Graphene layers grown on 6H-SiC(0001) were irradiated with 1 MeV electron beam to functionalize its surface. A surface analysis using atomic force microscopy,…”
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Scanning Photoemission Microscopy of Graphene Sheets on SiO2 by Kim, Ki-jeong, Lee, Hangil, Choi, Jae-Hyun, Youn, Young-Sang, Choi, Junghun, Lee, Hankoo, Kang, Tai-Hee, Jung, M. C., Shin, H. J., Lee, Hu-Jong, Kim, Sehun, Kim, Bongsoo

“…Scanning photoemission microscopy (SPEM) images of a graphene flake as well as the C 1s core level spectra for the mono‐ and multilayer graphene are measured…”
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Unidirectional Pt silicide nanowires grown on vicinal Si(100) by Lim, Do Kyung, Bae, Sung-Soo, Choi, Junghun, Lee, Dohyun, Sung, Da Eun, Kim, Sehun, Kim, J K, Yeom, H W, Lee, Hangil

“…We investigated the structure and electronic properties of unidirectional Pt(2)Si nanowires (NWs) grown on a Si(100)-2 degrees off surface. We found that…”
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Extension Mechanism of a Flexible End for Colonoscopy by Kadhim, Ibrahim, Choi, Junghun

“…The significance of the distal tip extension mechanism (DTEM) arises when the insertion tube of the colonoscope is no longer able to move further inside the…”
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Morphology-controlled synthesis of ternary Pt–Pd–Cu alloy nanoparticles for efficient electrocatalytic oxygen reduction reactions by Ryu, Jaeyune, Choi, Junghun, Lim, Dong-Hee, Seo, Hye-Lin, Lee, Sang-Young, Sohn, Yeonsun, Park, Jin Hoo, Jang, Jong Hyun, Kim, Hyoung-Juhn, Hong, Seong Ahn, Kim, Pil, Yoo, Sung Jong

“…[Display omitted] •Morphology-controlled synthesis of ternary Pt–Pd–Cu alloy nanoparticles was accomplished.•Control over the degree of galvanic substitutions…”
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One-step synthesis of carbon-supported Pd@Pt/C core-shell nanoparticles as oxygen reduction electrocatalysts and their enhanced activity and stability by Lim, Yuntaek, Kim, Seok Ki, Lee, Seung-Cheol, Choi, Junghun, Nahm, Kee Suk, Yoo, Sung Jong, Kim, Pil

“…A close encounter with reality on core-shell catalysts for fuel cells: the outstanding significance of the work is (i) suggestion of a computational…”
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Evidence of Chemical Functionalized Molecules Adsorbed on the Interface Region of Epitaxial Graphene: Interface Roughness and Modification of the Electronic Properties by Lee, Hangil, Yang, Sena, Choi, Junghun, Park, Youngchan, Kim, Sehun

“…We investigate the variation of the electronic properties and morphological surface change of epitaxial graphene (EG) by chemically functionalizing the…”
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Structural and Electronic Properties of Cobalt Germanide Islands on Ge(100) by Choi, Junghun, Lim, Do Kyung, Kim, Youngwoo, Kim, Sehun

“…The structure and electronic properties of cobalt germanide islands were studied by scanning tunneling microscopy (STM). We found that cobalt-rich surfaces…”
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Detection of endoscopic looping during colonoscopy procedure by using embedded bending sensors by Bruce, Michael, Choi, JungHun

“…Looping of the colonoscope shaft during procedure is one of the most common obstacles encountered by colonoscopists. It occurs in 91% of cases with the…”
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The Lowest On-Resistance and Robust 130nm BCDMOS Technology implementation utilizing HFP and DPN for mobile PMIC applications by Kim, Daehoon, Lee, Kuemju, Kim, Jaeeuk, Choi, Junghun, Lee, Jaehee, Cho, Inwook

“…BCD technology has been the workhorse of several critical products in the mobile market. Aggressive design rule and architectural modifications are being…”
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Novel evaluation method for electrosurgical ablation by monopolar hot biopsy forceps for colonoscopy by Tang, Chen, Choi, Jung Hun

“…This study evaluates tissue injury, which results from electrosurgical ablation, by correlating lesion depth to tissue impedance, and introduces a newly…”
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Subsurface Incorporation of Co Atoms into Si(100) by Choi, Junghun, Kim, Youngwoo, Lim, Do Kyung, Kim, Do Hwan, Kim, Sehun

“…The initial adsorption structures of Co on Si(100) were investigated using scanning tunneling microscopy (STM). Filled-state STM images showed bright…”
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Creation and annihilation of single atom vacancy during subsurface diffusion by Choi, Junghun, Lim, Do Kyung, Kim, Youngwoo, Kim, Do Hwan, Kim, Sehun

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Detection of Looping During Colonoscopy Using Bending Sensors by Choi, JungHun

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