A5091284495- Embedded Systems Design Techniques
- Parallel Computing and Optimization Techniques
- Video Coding and Compression Technologies
- Interconnection Networks and Systems
- Image and Video Quality Assessment
- DNA and Nucleic Acid Chemistry
- Electrocatalysts for Energy Conversion
- Catalytic Processes in Materials Science
- Advanced biosensing and bioanalysis techniques
- Advanced Photocatalysis Techniques
- Multimedia Communication and Technology
- RNA Interference and Gene Delivery
- Perovskite Materials and Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Analog and Mixed-Signal Circuit Design
- Nanomaterials for catalytic reactions
- Plasmonic and Surface Plasmon Research
- Advanced Data Compression Techniques
- Advanced battery technologies research
- Cloud Computing and Resource Management
- Electrowetting and Microfluidic Technologies
- Nonlinear Optical Materials Research
- Nonlinear Optical Materials Studies
- Indoor and Outdoor Localization Technologies
- Nanofabrication and Lithography Techniques
Kyung Hee University
2011-2024
Chung-Ang University
2024
Korea Research Institute of Standards and Science
2024
Seoul National University
2023-2024
Pohang University of Science and Technology
2019-2023
Yonsei University
2008-2022
Korea Institute of Science & Technology Information
2021-2022
Handong Global University
2016
Korea Institute of Science and Technology
2011
Cu is a key element for many photo- and electro-driven catalyst systems, but it readily undergoes natural oxidation in air electron-mediated support interactions when contact with reducible oxides. The production of value-added hydrocarbons via photocatalytic CO2 reduction promising, remains an unresolved challenge due to the hurdles associated controlling valence state cocatalyst within heterogeneous composite formed as result oxidative stabilization during nucleation process. Herein, we...
An all-iron aqueous redox flow battery using iron (Fe) 2,2-bis(hydroxymethyl)-2,2′,2′-nitrilotriethanol (BIS-TRIS) complex (Fe(BIS-TRIS)) and Ferrocyanide (Fe[CN]6) as couple is newly suggested. The potential of Fe(BIS-TRIS) −1.11 V (vs Ag/AgCl) this makes appropriate active material for anolyte, while Fe(CN)6 proper catholyte due to its excellent reactivity, potential, cheap cost. According quantitative evaluations, does not produce any side reactions more stable than Fe triethanolamine...
Two essential characteristics that are required for hybrid electrocatalysts to exhibit higher oxygen and hydrogen evolution reaction (OER HER, respectively) activity a favorable electronic configuration sufficient density of active sites at the interface between two materials within hybrid. In present study, electrocatalyst is introduced with novel architecture consisting coral-like iron nitride (Fe2 N) arrays tungsten (W2 N3 ) nanosheets satisfies these requirements. The resulting W2 /Fe2 N...
In hypoxia, endothelial cells (ECs) proliferate, migrate, and form new vasculature in a process called angiogenesis. Recent studies have suggested that ECs rely on glycolysis to meet metabolic needs for angiogenesis ischaemic tissues, several investigated the molecular mechanisms integrating metabolism. Here, we role of stem cell factor (SCF) its receptor, cKIT, regulating during hypoxia-driven
A new route to systematically control the optical dispersion properties of surfactant-free deoxyribonucleic acid (DNA) thin solid films was developed by doping them with vitamin B2, also known as riboflavin. Surfactant-free DNA high quality were successfully deposited on various types substrates spin coating aqueous solutions without additional chemical processes, thicknesses ranging from 18 100 nm. Optical investigated measuring UV-visible-NIR transmission, and their refractive indices...
We successfully obtained transfer ribonucleic acid (tRNA) thin solid films (TSFs) using an aqueous solution precursor in optimized deposition process. By varying the concentration of RNA and process parameters, uniform layers with a thickness 30 to 46 nm were fabricated consistently. Linear absorptions TSFs on quartz substrates experimentally investigated wide spectral range covering UV-VIS-NIR find high transparency for λ > 350 nm. analyzed linear refractive indices, n(λ) tRNA silicon by...
The denaturation of double-stranded deoxyribonucleic acid (ds-DNA) has been well known to break nucleobase bonds, resulting in single-stranded (ss-DNA) solutions, which can recombine form ds-DNA a reversible manner. We developed an efficient process irreversibly maintain various DNA levels thin solid films order investigate the impacts on optical properties films. By adding NaOH aqueous solution salmon testis DNA, we flexibly controlled level solution, was then spin-coated Si and silica...
Metal nanoparticle-organic interfaces are common but remain elusive for controlling reactions due to the complex interactions of randomly formed ligand-layers. This paper presents an approach enhancing selectivity catalytic by constructing a skin-like few-nanometre ultrathin crystalline porous covalent organic overlayer on plasmonic nanoparticle surface. features highly ordered layout pore openings that facilitates molecule entry without any surface poisoning effects and simultaneously...
Among five nucleobases, adenine (A), guanine (G), cytosine (C), thymine (T) and uracil (U), is a key distinctive constituent existing only in ribonucleic acid (RNA). RNA shares the common A, G, C with deoxyribonucleic (DNA) made of A-T, G-C hydrogen bonding. We explored new attempt to combine (U) DNA, successfully realizing U-doped DNA thin solid films for first time. Impacts on optical properties were thoroughly investigated. The method was based optimal spin-coating an aqueous solution...
We developed a new method to deposit deoxyribonucleic acid (DNA) solid film selectively only on the core of an optical fiber facet with variable thickness, by optically trapping aqueous DNA droplet during optimal drying process. experimentally demonstrated ultra-compact Fabry-Perot interferometer (FPI) in columnar shape diameter ~10 μm and height from 2.0 4.5 μm. Utilizing highly confined DNA-FPI its unique thermo-optical properties large negative coefficient -5.91 × 10−4/ °C at λ = 1550 nm,...
We thoroughly investigated the optical properties of surfactant-free deoxyribonucleic acid (SF-DNA) solid films across a broad spectral gamut from ultraviolet (UV) to terahertz (THz). Demonstrating potential as transparent dielectric material, SF-DNA could potentially form elements, such lenses, prisms, and waveguides, for dual-band, near-IR THz applications. were classified according their thickness. Nanometer scale films, ranging 40 200 nm, created by employing spin coating techniques with...
본 논문에선 분산 메모리 아키텍처를 사용하는 멀티프로세서 시스템에서 메시지 전달을 지원하는 하드웨어 MPI(Message Passing Interface) 유닛을 설계하였다 데이터 전송 동기화 및 전송, 완료까지의 과정을 MPI 유닛이 담당하여 동기화에 따른 오버헤드를 경감시켰다. 또한 메시지를 저장 관리하는 요청 큐(Request Queue), 준비 큐(Ready 예약 큐(Reserve Queue)를 내장하여 병렬적으로 입력받은 관리하고 비순차적 종료(out of order completion)을 지원한다. BMF(Bus Functional Medel)을 제작해 제안한 구조에서의 대역폭 성능을 확인한 결과 다대다 통신에서 25% 이상의 성능 향상이었음을 확인할 수 있었다. 그 후 HDL로 기술된 하드웨어를 Magnachip 0.18 공정 라이브러리에서 합성하였으며 프로토 타입 chip으로 제작하였다. 유닛은 전체 칩 사이즈의 1% 이하의 크기로 높은 향상을 기대할 있어,...
In this paper, we propose a scalable distributed memory system with low-cost hardware message-passing interface. The proposed interface improves the communication performance between nodes to decrease overhead synchronization receiver reservation technique. simulation results indicate that is increased by 20% on 4x4 communications. synthesis result of MPI indicates area was only 4.49% each computing node. As result, useful embedded MPSoCs (Multiprocessor System Chip) for its implementation...
Zero-effort bilateral authentication was introduced recently to use a trusted wristwear continuously authenticate smartphone user. A user is allowed the if both and are determined be held by same person comparing wristwear's motion with smartphone's input or motion, depending on grip — which hand holds provides input. Unfortunately, scheme has several shortcomings. First, it may work improperly when walking since gait can conceal wrist's motions of making touches. Second, compares two...