Search Results - "Chang, Hankwon"

3D label-free prostate specific antigen (PSA) immunosensor based on graphene–gold composites by Jang, Hee Dong, Kim, Sun Kyung, Chang, Hankwon, Choi, Jeong-Woo

“…Highly sensitive and label-free detection of the prostate specific antigen (PSA) remains a challenge in the diagnosis of prostate cancer. Here, a novel…”
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Surface and internal deoxidation behavior of titanium alloy powder deoxidized by Ca vapor: Comparison of the deoxidation capability of solid solution and intermetallic titanium alloys by Kim, Taeheon, Oh, Jung-Min, Cho, Gye-Hoon, Chang, Hankwon, Jang, Hee Dong, Lim, Jae-Won

“…[Display omitted] •Ca vapor deoxidation reduced the thickness of the surface oxide layer.•Surface oxygen increased as the particle size decreased.•Internal…”
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Electrochemical performances of iron-cobalt oxides nanoparticles loaded crumpled graphene for supercapacitor by Lee, Chongmin, Kim, Sun Kyung, Choi, Ji-Hyuk, Chang, Hankwon, Jang, Hee Dong

“…Mixed transition metal oxides (MTMOs) have been explored as attractive electrode materials for supercapacitors owing to their higher electronic conductivity…”
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Three-dimensional crumpled graphene-based platinum–gold alloy nanoparticle composites as superior electrocatalysts for direct methanol fuel cells by Jang, Hee Dong, Kim, Sun Kyung, Chang, Hankwon, Choi, Ji-Hyuk, Cho, Bong-Gyoo, Jo, Eun Hee, Choi, Jeong-Woo, Huang, Jiaxing

“…High performance of electrocatalysts for direct methanol fuel cells was demonstrated by three-dimensional (3D) graphene (GR) decorated with platinum (Pt)–gold…”
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One-Step Formation of Silicon-Graphene Composites from Silicon Sludge Waste and Graphene Oxide via Aerosol Process for Lithium Ion Batteries by Kim, Sun Kyung, Kim, Hyekyoung, Chang, Hankwon, Cho, Bong-Gyoo, Huang, Jiaxing, Yoo, Hyundong, Kim, Hansu, Jang, Hee Dong

“…Over 40% of high-purity silicon (Si) is consumed as sludge waste consisting of Si, silicon carbide (SiC) particles and metal impurities from the fragments of…”
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Aerosol-Assisted Extraction of Silicon Nanoparticles from Wafer Slicing Waste for Lithium Ion Batteries by Jang, Hee Dong, Kim, Hyekyoung, Chang, Hankwon, Kim, Jiwoong, Roh, Kee Min, Choi, Ji-Hyuk, Cho, Bong-Gyoo, Park, Eunjun, Kim, Hansu, Luo, Jiayan, Huang, Jiaxing

“…A large amount of silicon debris particles are generated during the slicing of silicon ingots into thin wafers for the fabrication of integrated-circuit chips…”
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Preparation of Silicon-Carbon-Graphene Composites and their Application to Lithium Ion Secondary Battery by Kim, Sun Kyung, Kim, ChanMi, Chang, Hankwon, Jang, Hee Dong

“…Recently, high electrochemical performance anode materials for lithium ion secondary batteries are of interest. Here, we present silicon-carbon-graphene…”
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Stacking‐Controlled Assembly of Cabbage‐Like Graphene Microsphere for Charge Storage Applications by Kim, Sun Kyung, Lee, Byeongyong, Ha, Taehyeong, Park, Su‐Ryeon, Chang, Hankwon, Lee, Seung Woo, Jang, Hee Dong

“…Nanostructured graphene electrodes generally have a low density, which can limit the volumetric performance for energy storage devices. The liquid‐phase mild…”
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Investigation on the Correlations between Droplet and Particle Size Distribution in Ultrasonic Spray Pyrolysis by Wang, Wei-Ning, Purwanto, Agus, Lenggoro, I. Wuled, Okuyama, Kikuo, Chang, Hankwon, Jang, Hee Dong

“…In this study, the measurement of droplet size distribution by means of a laser diffraction technique in ultrasonic spray pyrolysis was investigated. Effects…”
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K2Ti6O13 Nanoparticle-Loaded Porous rGO Crumples for Supercapacitors by Lee, Chongmin, Kim, Sun Kyung, Chang, Hankwon, Jang, Hee Dong

“…Highlights K 2 Ti 6 O 13 nanoparticle (KTO NP)-loaded porous reduced graphene oxide crumples (PGCs) were fabricated. The specific capacitance was improved due…”
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Synthesis of PEG-modified TiO2–InVO4 nanoparticles via combustion method and photocatalytic degradation of methylene blue by Chang, Hankwon, Jo, Eun-Hee, Jang, Hee Dong, Kim, Tae-Oh

“…Polyethylene glycol (PEG) with different average molecular weights (600 and 20,000) was used as a templating reagent to synthesize PEG-modified TiO2–InVO4…”
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Preparation of cobalt oxide from concentrated cathode material of spent lithium ion batteries by hydrometallurgical method by Kang, Jingu, Sohn, Jeongsoo, Chang, Hankwon, Senanayake, Gamini, Shin, Shun Myung

“…Cobalt oxide was prepared from spent lithium ion batteries (LIBs) by reductive leaching, copper sulfide precipitation, cobalt oxalate precipitation and thermal…”
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Fabrication of 3D structured composites of crumpled graphene, polyaniline and molybdenum disulfide nanosheets for high performance alkali metal ion storage by Lee, Chongmin, Lee, Kyungbin, Ha, Taehyeong, Choi, Ji-Hyuk, Kim, Sun Kyung, Chang, Hankwon, Lee, Seung Woo, Jang, Hee Dong

“…[Display omitted] •3D structured CGR/PANI/MoS2 composites (CPM) were fabricated.•High electrochemical performance was obtained due to the synergy effect among…”
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Investigating the Aluminothermic Process for Producing Ferrotitanium Alloy from Ilmenite Concentrate by Choi, Ji-Hyuk, Chang, Hankwon, Ryu, Taegong, Nam, Chul-Woo, Kim, Byung-Su

“…The aluminothermic process is used for producing ferrotitanium alloy (FeTi) from an ilmenite concentrate. In this study, based on thermodynamic calculations…”
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Measuring the effective density, porosity, and refractive index of carbonaceous particles by tandem aerosol techniques by Lee, Sin Young, Chang, Hankwon, Ogi, Takashi, Iskandar, Ferry, Okuyama, Kikuo

“…The physical properties of carbonaceous aerosol particles are often of interest but are difficult to determine from a single measurement. In this study, we…”
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Enhanced photocatalytic property of nanoporous TiO₂/SiO₂ micro-particles prepared by aerosol assisted co-assembly of nanoparticles by Kim, Sun Kyung, Chang, Hankwon, Cho, KuK, Kil, Dae Sup, Cho, Sung Wook, Jang, Hee Dong, Choi, Jeong-Woo, Choi, Jinhoon

“…Nanoporous TiO₂/SiO₂ composite micro-particles were prepared by an aerosol assisted co-assembly (AACA) and their characteristics were investigated for…”
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Synthesis of Multiwall Carbon Nanotube/Graphene Composite by an Aerosol Process and its Characterization for Supercapacitors by Jo, Eun Hee, Kim, Sun Kyung, Chang, Hankwon, Lee, Chongmin, Park, Su-Ryeon, Choi, Ji-Hyuk, Jang, Hee Dong

“…A multiwall carbon nanotube/graphene (MWCNT/GR) composite was synthesized for an enhanced supercapacitor. Aerosol spray drying (ASD) was used to synthesize the…”
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Synthesis of hollow silica particles with tunable size, shell thickness, and morphology by Kim, Jiwoong, Lee, Jinwoo, Chang, Hankwon, Choi, Jeong-Woo, Jang, Hee Dong

“…We herein present a simple and effective method to control the particle size, shell thickness, and morphology of hollow silica particles (HSPs). To synthesize…”
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Aerosol Processing of Graphene and Its Application to Oil Absorbent and Glucose Biosensor by Kim, Sun Kyung, Chang, Hankwon, Choi, Jeong-Woo, Huang, Jiaxing, Jang, Hee Dong

“…Graphene (GR) is a flat monolayer of sp2-bonded single carbon atoms densely packed into a honeycomb crystal lattice. Due to its unique characteristics, GR is…”
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Non-spherical particle formation induced by repulsive hydration forces during spray drying by Suh, Yong Jae, Lee, Jin-Woo, Chang, Hankwon, Jang, Hee-Dong, Cho, Kuk

“…Non-spherical particles were produced during a spray-drying process, but the exact mechanism of their formation was unknown. The non-spherical particles form…”
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