• 대한전자공학회논문지
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• 제20권6호
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• pp.52-57
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• 1983

자성체 박막을 갖는 광도파판에서 전자파의 전파를 이론적으로 조사하였다. 광도파관이 갖는 혼합모드의 전계 및 자계의 분포, 또한 그들의 위상속도를 광도파관의 기본 모드의 위상차와 자성박막의 파라데이 회전각으로 나타냈으며 파라데이 효자에 의한 위상 특성곡선의 분할에 대하여 논하였다. 그리고 흔합모드의 이론으로 모드변환 행열을 도출한 결과, 전자파의 진행거리에 따른 모드변환이 광도파관에서는 bulk 매질과는 다름을 나타내었다.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2013년도 제45회 하계 정기학술대회 초록집
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• pp.145.1-145.1
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• 2013

A prerequisite for the development of graphene-based field effect transistors (FETs) is reliable control of the type and concentration of carriers in graphene. These parameters can be manipulated via the deposition of atoms, molecules, and polymers onto graphene as a result of charge transfer that takes place between the graphene and adsorbates. In this work, we demonstrate a unique and facile methodology for the homogenous and stable p-type doping of graphene by hybridization with ZnO thin films fabricated by MeV electron beam irradiation (MEBI) under ambient conditions. The formation of the ZnO/graphene hybrid nanostructure was attributed to MEBI-stimulated dissociation of zinc acetate dihydrate and a subsequent oxidation process. A ZnO thin film with an ultra-flat surface and uniform thickness was formed on graphene. We found that homogeneous and stable p-type doping was achieved by charge transfer from the graphene to the ZnO film.

• Bulletin of the Korean Chemical Society
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• 제22권12호
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• pp.1366-1370
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• 2001

Thin films of the SiO2-TiO2-PDMS composite material have been prepared by the sol-gel dip coating method. Acid catalyzed solutions of tetraethoxy silane (TEOS) and polydimethyl siloxane (PDMS) mixed with titanium isopropoxide Ti(OiPr) were used as precursors. The optical and structural properties of the organically modified 70SiO2-30TiO2 composite films have been investigated with Fourier Transform Infrared Spectroscopy (FT-IR), UV-Visible Spectroscopy (UV-Vis), Differential Thermal Analysis (DTA) and prism coupling technique. The films coated on the soda-lime-silicate glass exhibit 450-750 nm thickness, 1.56-1.68 refractive index and 88-94% transmittance depending on the experimental parameters such as amount of PDMS, thermal treatment and heating rate. The optical loss of prepared composite film was measured to be about 0.34 dB/cm.

• 한국항공우주학회지
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• 제36권9호
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• pp.841-850
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• 2008

본 연구에서는 탄소 복합재와 알루미늄 2024-T3 단일겹침 체결부에 대해, 체결방법을 접착, 리벳, 리벳/접착 하이브리드의 세 가지로 변화시키면서 체결방법에 따른 파손하중과 파손모드를 실험을 통해 연구하였다. 세 가지 체결방법에 대해 각각 겹침길이 3가지와 적층순서 2가지, 총 82개의 시편을 제작하였다. 접착제는 FM73m, 리벳은 NAS9308-4-03을 사용하였다. 접착 체결과 하이브리드 체결에서는 겹침길이가 커짐에 따라 파손하중이 증가하였고, 리벳 체결에서는 겹침길이에 따른 파손하중 변화가 나타나지 않았다. 단순 접착 및 리벳 체결부에서는 적층순서에 따른 일관된 경향을 발견하기 어려운 반면, 하이브리드 체결부에서는 인접층의 적층각 차이가 작은 적층판을 사용한 체결부의 파손하중이 높게 나타났다. 접착 체결과 하이브리드 체결의 주된 파손모드는 층간분리이고 리벳 체결은 국부적 베어링 파손을 동반한 리벳 파손으로 나타났다.

• 한국콘텐츠학회논문지
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• 제15권12호
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• pp.50-60
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• 2015

주제가 'Let it go'로 세계적인 열품을 주도한 애니메이션 영화 <겨울왕국 (Frozen), 2013> 은 전미박스 오피스 1위를 넘어 역대 디즈니 애니메이션 중 최고의 흥행을 거두었다. 뮤지컬 애니메이션으로 재창조된 <겨울왕국, 2013>이 세계적인 흥행 효과를 거두는 이유에 대해 뮤지컬 애니메이션의 혼성적 영상연출 기법을 중심으로 분석코자 한다. 이에 대해 알아보기 위해, 첫째, 뮤지컬 애니메이션에 대해 문헌을 중심으로 고찰하고, 둘째, 뮤지컬의 음악적 특성과 애니메이션의 연출기법을 중심으로 분석기준을 도출하였다. 셋째, 이를 바탕으로 뮤지컬 애니메이션 <겨울왕국, 2013>을 사례로 하여 혼성적 영상연출기법에 대해 분석 및 검증한다. 본 연구를 통해 <겨울왕국, 2013>은 '연기의 과장성', '상황의미 전달', '감성의 극적인 표출' 등의 뮤지컬의 음악적 특성이 애니메이션 캐릭터를 통해 구현되고 있으며, 배경음악과 노래는 뮤지컬적 구성을 통해 '서사적 기능'이 이루어지고 있음을 알 수 있다. 또한, 애니메이션의 VFX를 통한 눈의 효과가 뮤지컬의 음악적 특성과 함께 장면을 구성하면서 혼성적 영상연출이 구현되었다. 이를 통해, 혼종적 접목을 통한 뮤지컬 애니메이션의 영상 연출적 효과와 영상미학적 특성이 범세계적인 대중적 기호에 부합하고 있음을 알 수 있다.

• 한국전기전자재료학회논문지
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• 제18권8호
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• pp.724-728
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• 2005

Electro-optic characteristics of reflective hybrid aligned liquid crystal (LC) cell driven by fringe field using a nematic LC with positive dielectric anisotropy have been studied. Optimized optical configurations are achieved by using a single polarizer, half-wave film and a cell with quarter-wave retardation. The simulation results shows an optimum cell retardation of $0.30{\mu}m$. This value may allow a practical cell gap larger than $3{\mu}m$, which makes it easy to control in the manufacturing process. Furthermore, this LC cell with optimized cell parameters shows low wavelength dispersion and the contrast ratio greater than 5 over exists about $100{\circ}$ in vertical direction and $160{\circ}$ in horizontal direction. Also, when using the LC with positive dielectric anisotropy rather than negative dielectric anisotropy, the display shows low power consumption and fast response time.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2003년도 하계학술대회 논문집 Vol.4 No.2
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• pp.972-975
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• 2003

We have performed computer simulation to obtain electro-optic characteristics of reflective hybrid aligned nematic liquid crystal displays driven by fringe field. The results show that the optimal retardation value of the cell is $0.289{\mu}m$, which allows for the cell to have a practical cell gap of larger than $3{\mu}m$ when manufacturing. A reflectance of the dark state is only 0.114% for an incident light 550nm. At this condition, the light efficiency of white state reaches 92.7%. Further, we have studied a new reflective display with polarizer, optical compensation with half plate, LC plus reflector. The display with optimized cell parameters shows low wavelength dispersion and the contrast ratio greater than 5 over exists about $120^{\circ}$ in vertical direction and $160^{\circ}$ in horizontal direction.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2005년도 추계학술대회 논문집 Vol.18
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• pp.269-270
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• 2005

A hybrid passivation method using parylene and silicon dioxide combination layer for a flexible organic light emitting diode (FOLED) was applied on a polycarbonate substrate. A parylene coating by vapor polymerization method is a highly effective passivation process for the FOLED, and it applies all top surface and the edges of the FOLED device. In order to minimize the permeation of moisture and oxygen from the top surface of the device, an additional layer of silicon dioxide was deposited over the parylene coated layer. It was found that the water vapor transmittance rate (WVTR) of parylene (15 m-in-thickness) / SiO2 (0.3$\mu$m-in-thickness) combination layers deposited on polycarbonate film was decreased under the value of 10-3 g/m2day. The FOLED with the hybrid passivation showed remarkably longer lifetime characteristics in the ambient conditions than the non-passivated FOLED. The lifetime of the passivated FOLED was 400 hours and it was more than ten times over the lifetime of the convectional non-passivated FOLED.

• 한국해양공학회:학술대회논문집
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• 한국해양공학회 2004년도 학술대회지
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• pp.7-12
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• 2004

Desalination system of revers osmosis(RO) membrane has been proven to be the most economical not only for the desalination of water containing salts, but also for the concentration of solute. RO membranes were traditionally made of inorganic polymers such. as cellulose acetate(CA), Polyamide(PA). To retain more minerals in deep ocean water, a new hybrid membrane composed of tourmaline film as organic material onto inorganic layer of CA polymer in asymmetric structure was developed for RO membrane process. The performance tests were carried out in the permeability of pure water and the rejection of NaCl solution to evaluate the adaptability for DOW desalination. The results of these basic tests show possibility to apply the new hybrid RO membrane for the desalination with function control.

• 한국생산제조학회지
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• 제20권3호
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• pp.245-250
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• 2011

An UV/thermal hybrid nanoimprint lithography system was designed and implemented for the pattern transfer to flexible substrates. This system can utilize a plate stamp, roll stamp, and film stamp. For all cases of using those stamps, this system is also switchable an UV or thermal nanoimprint lithography mode. This paper shows how to design the heating and UV curing plates and proposes how to change them easily. Because the pressure condition and the speed of the press roller varies by the characteristics of the stamp and substrate, all the parameters related to the nanoimprint lithography have to adjustable. Some transferred patterns are shown in this paper to verify the performance of the hybrid nanoimprint lithography system. The flexible substrates with nano-scale patterns on them will be key components for next generation technologies such as flexible displays, bendable semi-conductors, and solar cells.