A5100608516- Thin-Film Transistor Technologies
- Organic Light-Emitting Diodes Research
- Image and Video Quality Assessment
- Organic Electronics and Photovoltaics
- Innovation in Digital Healthcare Systems
- Computational Fluid Dynamics and Aerodynamics
- Photonic and Optical Devices
- Education and Learning Interventions
- Diverse Approaches in Healthcare and Education Studies
- Metamaterials and Metasurfaces Applications
- Educational Systems and Policies
- Gas Dynamics and Kinetic Theory
- Optical Coatings and Gratings
- Internet of Things and Social Network Interactions
- Technology and Data Analysis
- Semiconductor Lasers and Optical Devices
- 3D IC and TSV technologies
- Brain Tumor Detection and Classification
- Hybrid Renewable Energy Systems
- Color Science and Applications
- Glass properties and applications
- Advanced Optical Imaging Technologies
- Nuclear materials and radiation effects
- Chemical Safety and Risk Management
- Power Systems and Technologies
Hanyang University
2023-2025
Samsung (South Korea)
2006-2023
University of Florida
2016-2021
Sungkyunkwan University
2019-2021
Pukyong National University
2018
Yonsei University
2016
Chonnam National University
1991-2011
Argonne National Laboratory
2008
Harvard University
2006
Korea Institute of Ocean Science and Technology
1997
We have developed the high-resolution auto-stereoscopic 3D display for first time in world. For this, we suggested division(TD) parallax barrier method. division multiplexing image separation, adapted 2.2″ AMOLED panel Imager and fabricated fast driving circuit, which operated more than 240Hz frame rate. Also designed OCB mode LC shutter responses. can see 3-D at 300mm viewing distance with resolution that is same as 2-D resolution.
Abstract We propose a topological coherent perfect absorber that enables almost ideal performance with remarkably compact device footprint and tight incident beams. The proposed structure is based on junction of two guided-mode-resonance gratings. provides robust systematic ways lateral confinement the absorbing resonance mode near-perfect mode-match to arbitrary beams, which are unavailable conventional approaches. demonstrate an exemplary amorphous Si thin-film absorptance modulation...
Abstract A transparent active matrix organic light emitting diode AMOLED display based on a bottom emission structure, which is best for largesized OLED displays, has been fabricated. The shows an image only to its side, and background images can be seen through the transmissive windows. Pixel layout of conventional structure redesigned merge openings single window per each pixel higher transmissivity. prototype demonstrated 27% transmissivity 100% NTSC color gamut.
High refractive index nanoparticle material was applied as a scattering layer on the inner side of glass substrate bottom emission organic light emitting diode (OLED) device to enhance extraction and improve angular color shift. TiO2 YSZ (Yttria Stabilized Zirconia; Y2O3-ZrO2) were examined high nanoparticles. The formed by coating method, which is generally used in commercial display manufacturing process. Additionally, planarization coated with same method. implemented endured, without...
In teaching a course on verification and validation (V&V) in scientific simulations, it is desirable for students to carry out repeated experiments devices/systems that they can build be easily repeated. This allows them exposed the inherent aleatory uncertainty associated with building testing when are used validate simulation tools. paper reports our experience using helicopters this purpose V&V graduate course. Paper have been various courses, from statistics high school...
A top emitting organic light-emitting diode (OLED) device with pure aluminum (Al) anode for high-resolution microdisplays was proposed and fabricated. The low work function of the Al anode, even a native oxide formed on surface, increases energy barrier interface between hole injection layer, has poor hole-injection properties, which causes efficiency device. To enhance characteristics we applied hexaazatriphenylene hexacarbonitrile (HATCN) as layer material. OLED surface improved by up to...
A top emitting organic light diode‐on‐silicon (OLEDoS) panel with aluminum (Al) anode for high‐resolution microdisplays was proposed and fabricated. The low work function of the Al increases energy barrier interface between hole injection layer (HIL), has poor hole‐injection properties, which causes efficiency device. To enhance characteristics anode, we applied optimized HIL transportation (HTL) materials. single stack structure white OLED display fabricated on CMOS backplane device...
While we rely on simulations to predict the response of complex systems, recognize that models underlie these are never perfect. Comparison with experiments is an important tool for exposing limitations models, and providing insights into which need improvement. However, errors in numerical model uncertainties can obscure true discrepancies between predictions physical reality, therefore be reduced. In order expose deficiencies it assess magnitude reduce them until modeling become apparent....
In wound healing, tissue growth, and certain cancers, the epithelial or endothelial monolayer sheet expands.Within expanding sheet, migration of individual cell is strongly guided by physical forces imposed adjacent cells.This process called plithotaxis was discovered using Monolayer Stress Microscopy (MSM).MSM rests upon simplifying assumptions, however, concerning boundary conditions, material properties system dimensionality.To assess validity these assumptions to quantify associated...
Two easily accessible fluorene-based conjugated oligo-electrolytes (COEs) FTF- and FBF-NBr have been developed as the cathode interfacial layer (CIL) in inverted type polymer solar cells (iPSCs). CILsare interpretative to improving power conversion efficiency (PCE) long-term stability of photovoltaic cell that utilizes a high work function cathode. Compared reference devices without interlayer, FBF- FTF-NBr exhibit significant improvements device parameters by reducing indium thin oxide...
해외 시장에서 한국 건설기업들의 지속적인 성장에 힘입어 중소 중견기업 역시 눈에 띄게 성장 하였다. 중견기업의 진출 형태 또한 기존 단일 하도급 위주의 프로젝트 수행에서 다수 원도급 수행으로 고도화 되고 있다. 하지만 수익률 측면에서 여전히 적자 현상에서 벗어나지 못하고 있다(대기업 5건 중 1건 적자, 중소기업 3건 공사). 이에 본 연구에서는 고도화된 진출형태에 따른 다수프로젝트 관리방안을 도출하고자 한다. 1965년부터 시행된 8,000여 건의 해외건설 준공데이터 정보를 기반으로 통합리스크를 측정한다. 통합리스크와 수익률간의 상관관계를 기업별 최대로 허용할 수 있는 허용리스크 도출 알고리즘을 개발하였다. 3개 기업을 선정하여 이들 기업의 재무제표 분석을 수행하였으며 구간이 성과와 상관성이 있다는 것을 도출하였다. 측정을 통해 중견 기업관점에서 관리를 위한 중요한 참고자료를 제시할 있을 것이라 기대한다. Since Korean construction firms have...
Abstract Uncertainty quantification (UQ) is an important step in the verification and validation of scientific computing. Validation can be inconclusive when uncertainties are larger than acceptable ranges for both simulation experiment. Therefore, uncertainty reduction (UR) to achieve meaningful validation. A unique approach this paper separate model error from such that UR reveal error. This aims share lessons learned UQ a horizontal shock tube simulation, whose goal validate particle drag...
Abstract Very high current efficiency of 18.4 cd/A (conversion white 4 cd/A) for a single optical path top emitting WOLED and 15.8 conversion multiple has been successfully demonstrated. The VCRC (volume color reproduction capability) these OLEDs with filters achieved 106% 142% sRGB, respectively.
Abstract We have developed the stereo‐corresponding algorithm using edge information. The conventional algorithm, SAD (Sum of Absolute Difference), has a good quality in case texture region, but it false matching non‐texture region. In order to reduce new cost function, which is defined as SED Edge Difference) based on global optimization, added function SAD. evaluate our and benchmark Middlebury database. experimental results show that proposed successfully produces piecewise smooth...
In addition to the numerical challenges of simulating explosive dispersal particles, validation simulation is often plagued with poor knowledge experimental conditions. The level detail required for beyond what usually included in literature. This presentation proposes use forensic uncertainty quantification (UQ) investigate validation-quality experiments discover possible sources that may have been missed initial design or under-reported. current experience authors has found by making an...
Smart Home has achieved remarkable developments over the past few decades. In ICT(Information and Communications Technology) field, 'app ecosystem'-a collection of multiple devices such as mobile phones tablets, software (operating system development tools), companies (manufacturers, carriers, app-stores, etc.) process through which data is transferred/shared by a user from one device to another or itself-has come into wide use since advent smart phone. Due synergy effect ecosystem', it been...
We present coherent perfect absorbers based on topological guided-mode resonances at a junction of two thin-film waveguide lattices. The proposed structure provides fully confined resonance state in both vertical and lateral dimensions, creating compact absorber possibly operating the critical coupling condition for complete annihilation certain optimized incoming waves. provide promising Si-photonic design, wave configuration, theoretical performance its operation as integrated optics platform.
본 연구는 자치경찰사무 지원에 필요한 재원 확보 및 편성방안별 장단점을 검토·분석하여 한국형 자치경찰제에 가장 안정적으로 정착·운영될 수 있는 모델을 도출하고자 하였다. 장단점 분석 결과, 자치경찰사무는 국가가 지원하고 각 지역 자체적으로 지자체의 특성과 수요를 반영한 추가적인 서비스는 지역이 자율적으로 시행할 있도록 국고보조금 지원 방식을 기반으로 한다. 이에 재정분권 모델도 함께 고려하여 중앙정부 기능의 지방이양과 재정분권에 따른 지방세입 확충기반 강화 등 재정자율성과 재정책임성 강조 차원에서 재원을 충당하는 방식도 제시하였다. 사무이양에 소요비용은 지방소비세율을 인상하여 보전하는 것을 전제로 다만, 자주재원으로 충당 시에 자치단체의 재정여력에 따라 치안 역량의 균질성 문제가 대두될 여지가 있다. 이를 방지하기 위하여 특별회계 설치 방안과 자치경찰교부세와 병행하여 운영하는 방안, 교통관련 과태료 범칙금 활용, 자치경찰세 신설 방안 등을 고려하였다.