Search Results - "Kwak, Dong Sub"

Comparison study of structural and optical properties of boron-doped and undoped graphene oxide films by Khai, Tran Van, Na, Han Gil, Kwak, Dong Sub, Kwon, Yong Jung, Ham, Heon, Shim, Kwang Bo, Kim, Hyoun Woo

“…► B-doped GOs are fabricated by annealing the films, which were obtained from the suspensions with GO and H3BO3. ► Raman spectra revealed more graphitization…”
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Influence of N-doping on the structural and photoluminescence properties of graphene oxide films by Van Khai, Tran, Na, Han Gil, Kwak, Dong Sub, Kwon, Yong Jung, Ham, Heon, Shim, Kwang Bo, Kim, Hyoun Woo

“…Nitrogen (N) was doped into graphene oxide (GO) films at temperatures of 600–900°C under the flow of a mixture of NH3 and Ar. The N (atomic) concentration was…”
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ZnO-cored heteronanowires sheathed with Cu shells: Structural, magnetic, and photoluminescence properties by Yang, Ju Chan, Na, Han Gil, Kwak, Dong Sub, Kim, Hyoun Woo

“…Copper (Cu) shell layers were sputter-coated on core ZnO nanowires to fabricate ZnO/Cu core-shell nanowires. The Cu shell was thermally annealed to form the…”
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ZnO–SnO2 branch–stem nanowires based on a two-step process: Synthesis and sensing capability by Kim, Sang Sub, Choi, Sun-Woo, Na, Han Gil, Kwak, Dong Sub, Kwon, Yong Jung, Kim, Hyoun Woo

“…ZnO–SnO2 branch–stem nanostructures were realized on a basis of a two-step process. In step 1, SnO2-stem nanowires were synthesized. In step 2, ZnO-branch…”
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Decoration of Pd nanoparticles on ZnO-branched nanowires and their application to chemical sensors by Kim, Sang Sub, Na, Han Gil, Choi, Sun-Woo, Kwak, Dong Sub, Kim, Hyoun Woo

“…[Display omitted] ► Coating ZnO-branched nanowires with a Pd shell layer. ► Varying the annealing temperature induced changes in product morphology. ►…”
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Tailoring the photoluminescence of MgO nanowires using the Ag shell layers and nanoparticles by Kim, Hyoun Woo, Na, Han Gil, Yang, Ju Chan, Kwak, Dong Sub

“…We fabricated MgO/Ag core-shell nanowires, where core nanowires were coated with a conformal layer of Ag via sputtering. By subsequent thermal annealing, we…”
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Fabrication and magnetic properties of In2O3/NiMnGa core–shell nanowires by Kim, Hyoun Woo, Na, Han Gil, Kwak, Dong Sub, Kwon, Yong Jung, Van Khai, Tran, Lee, Chongmu, Jung, Jong Hoon

“…We have prepared composite nanowires consisting of In2O3 and NiMnGa, in which the In2O3 core was coated with a continuous layer of NiMnGa via pulsed laser…”
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Decoration of In2O3 nanowires with BaTiO3 nanoparticles for enhancement of magnetic properties by Kim, Hyoun Woo, Kwak, Dong Sub, Kwon, Yong Jung, Lee, Chongmu, Jung, Jong Hoon

“…We have fabricated the composite nanowires consisting of In 2 O 3 core and BaTiO 3 shell, via a two-step method. The BaTiO 3 shell has been deposited on core…”
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Catalyst-free thermally-evaporated growth and optical properties of ZnO nanowires on Si, GaN and sapphire substrates by Khai, Tran Van, Sub Kwak, Dong, Jung Kwon, Yong, Bo Shim, Kwang, Woo Kim, Hyoun

“…Vertically well‐aligned zinc oxide nanowires (NWs) with high density were successfully synthesized on Si, sapphire and GaN/sapphire substrates by thermal…”
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TiO2/SiOx core-shell nanowires generated by heating the multilayered substrates by Na, Han Gil, Kwak, Dong Sub, Kwon, Yong Jung, Cho, Hong Yeon, Lee, Chongmu, Kim, Hyoun Woo

“…By heating Au/TiN/Si substrates, we fabricated TiO 2 /SiO x core-shell nanowires. By changing the thickness of predeposited Au layers, we demonstrated that the…”
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Generation of Zn2SiO4 Nanocrystallites in a Shell of ZnO/SiOx Core-Shell Nanowires to Change Photoluminescence Properties by Kim, Hyoun Woo, Yang, Ju Chan, Na, Han Gil, Kwak, Dong Sub, Lee, Chongmu

“…This study addresses the annealing effects of ZnO/SiO x core-shell nanowire optical properties, in terms of Zn 2 SiO 4 crystallite generation. At 700 °C, the…”
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Direct production of highly conductive graphene with a low oxygen content by a microwave-assisted solvothermal method by Khai, Tran Van, Kwak, Dong Sub, Kwon, Yong Jung, Cho, Hong Yeon, Huan, Tran Ngoc, Chung, Hoeil, Ham, Heon, Lee, Chongmu, Dan, Nguyen Van, Tung, Ngo Trinh, Kim, Hyoun Woo

“…•Few-layer graphene with a low oxygen content was synthesized by a two-step process.•Expanded graphite was subjected to solvothermal treatment, followed by…”
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Drastic change in shape of tetragonal TeO2 nanowires and their application to transparent chemical gas sensors by Kim, Sang Sub, Park, Jae Young, Choi, Sun-Woo, Yang, Ju Chan, Kwak, Dong Sub, Nam, Hyun Jung, Hwangbo, Chang Kwon, Kim, Hyoun Woo

“…We have synthesized one-dimensional structures of tellurium dioxide (TeO2) by heating of tellurium powders. Their morphology was drastically changed as the…”
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Enhanced Gas Sensing Characteristics of Ag2O-Functionalized Networked In2O3 Nanowires by Kim, Hyoun Woo, Na, Han Gil, Kwak, Dong Sub, Cho, Hong Yeon, Kwon, Yong Jung

“…We have fabricated Ag 2 O-functionalized In 2 O 3 nanowires, in which the NO 2 gas sensing properties are enhanced. To achieve the functionalization, the core…”
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Structural, Raman, and photoluminescence properties of double‐shelled coaxial nanocables of In 2 O 3 core with ZnO and AZO shells by Kwak, Dong Sub, Kim, Hyoun Woo

“…Abstract We synthesized In 2 O 3 /ZnO/Al‐doped ZnO (AZO) core‐double shell nanowires, in which the inner shell (ZnO) and the outer shell (AZO) have been…”
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Structural, Raman, and photoluminescence properties of double-shelled coaxial nanocables of In2O3 core with ZnO and AZO shells by Na, Han Gil, Kwak, Dong Sub, Kim, Hyoun Woo

“…We synthesized In2O3/ZnO/Al‐doped ZnO (AZO) core‐double shell nanowires, in which the inner shell (ZnO) and the outer shell (AZO) have been subsequently…”
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Bismuth-catalyzed synthesis of ZnO nanowires and their photoluminescence properties by Na, Han Gil, Yang, Ju Chan, Kwak, Dong Sub, Kim, Hyoun Woo

“…By means of heating a mixture of Zn and Bi powders, we have successfully prepared ZnO nanowires. Since the produced nanowires correspond to the pure hexagonal…”
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Drastic change in shape of tetragonal TeO 2 nanowires and their application to transparent chemical gas sensors by Kim, Sang Sub, Park, Jae Young, Choi, Sun-Woo, Na, Han Gil, Yang, Ju Chan, Kwak, Dong Sub, Nam, Hyun Jung, Hwangbo, Chang Kwon, Kim, Hyoun Woo

“…► Synthesis of TeO 2 nanowires by heating Te powders. ► Drastic morphological changes by varying the temperature. ► High transmission in the visible regime and…”
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Temperature-controlled synthesis and characterization of Bi4Ge3O12 nanowires by Kwak, Dong Sub, Kwon, Yong Jung, Na, Han Gil, Khai, Tran Van, Lee, Chongmu, Kim, Hyoun Woo

“…► Bi4Ge3O12 nanowires are fabricated by heating a mixture of Bi and Ge powders. ► Growth temperature affected the morphology, structure, and chemical…”
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Enhanced Gas Sensing Characteristics of Ag sub(2)O-Functionalized Networked In sub(2)O sub(3) Nanowires by Kim, Hyoun Woo, Na, Han Gil, Kwak, Dong Sub, Cho, Hong Yeon, Kwon, Yong Jung

“…We have fabricated Ag sub(2)O-functionalized In sub(2)O sub(3) nanowires, in which the NO sub(2) gas sensing properties are enhanced. To achieve the…”
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