• 한국전기전자재료학회논문지
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• 제30권10호
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• pp.651-655
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• 2017

This work reports the surface morphology and transmittance of copper oxide thin films for semitransparent solar cell applications. We prepared the oxide specimens by subjecting copper thin films to an oxidation reaction at annealing temperatures ranging between $100^{\circ}C$ and $300^{\circ}C$. The color of the as-deposited specimen was red, but changed to purple at the annealing temperature of $300^{\circ}C$. The surface morphology and transmittance of the specimens were significantly dependent on the annealing temperature and thickness of the copper films. Copper oxide nanoparticles prepared from a 20-nm-thick copper film at an annealing temperature of $300^{\circ}C$ provided a maximum transmittance of 93%. The obtained optical characteristics and surface morphology suggest that copper oxide thin films prepared by an oxidation reaction can be potentially employed as color- and transmittance-adjusting layer in semitransparent thin solar cells.

• 생물환경조절학회지
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• 제5권1호
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• pp.71-78
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• 1996

좀부추의 생육에 적합한 광환경을 구명하기 위하여 여러 가지 칼라 필름을 이용하여 광투과특성, 생장특성, 무기성분과 엽록소 함량을 조사하였던 바 그 결과를 요약하면 다음과 같다- 칼라 필름의 종류에 따른 광투과 특성에서 광질은 대조구와 투명 필름의 경우 광의 파장 별 선택적인 차단은 없었지만 기타 필름은 선택적으로 감소 또는 차단되었으며, 광량은 대조구의 광투과량을 100으로 볼 때 투명 필름이 76.5%로써 가장 높았고, 녹색 필름은 13.5%로써 가장 낮았다. 생육특성은 투명색, 황색, 핑크색 필름이 양호한 반면 녹색과 청색 필름은 저조하였다. 엽록소 함량은 청색 필름에서 0.27mg/g으로써 가장 높았지만, 황색필름은 0.16mg/g으로써 가장 낮았고, 무기 성분 함량은 녹색 필름이 질소, 인산 칼리, 칼슘, 마그네슘에서 가장 높았지만, 주황색 필름은 인산, 칼륨, 핑크색 필름은 질소, 칼리, 마그네슘에서 가장 낮았다.

• 한국엔터테인먼트산업학회논문지
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• 제13권3호
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• pp.343-350
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• 2019

중요한 시각적 요소로서 애니메이션영화의 색은 현실을 묘사할 수 있을 뿐만 아니라, 영화 공간을 형성하는 데 중요한 역할을 하는 감정과 의미를 전달할 수 있다. 가장 성공적인 애니메이션영화 중 하나로 <코코>는 영화 공간을 형성하기 위해 대담하고 독특한 색 언어를 사용한다. 민족 색상은 이야기 공간을 만들어 이야기 배경을 멕시코 지역 및 문화 풍습으로 가득 채우며, 색상 대조로 물리적 공간을 만들고 공간 모델링 및 차원 감을 뚜렷이 표현하며, 색상 연상 형식으로 심리적 공간을 만들어 관중들은 영화 정신세계에 인도하게 한다. <코코>의 공간 색상 분석을 통해, 애니메이션영화 공간 모델링은 색상의 특성 및 기능을 충분히 활용하고, 공간의 특성에 따라, 다른 색상 언어를 사용해야 하며 영화 공간의 표현 형식을 확장하고 영화 공간의 의미를 깊게 한다.

• 한국멀티미디어학회논문지
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• 제21권8호
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• pp.829-836
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• 2018

This study attempts to detect a shot boundary in films(or dramas) based on the length of a sequence. As films or dramas use scene change effects a lot, the issues regarding the effects are more diverse than those used in surveillance cameras, sports videos, medical care and security. Visual techniques used in films are focused on the human sense of aesthetic therefore, it is difficult to solve the errors in shot boundary detection with the method employed in surveillance cameras. In order to define the errors arisen from the scene change effects between the images and resolve those issues, the mixed algorithm based upon color histogram, edge histogram, and optical flow was implemented. The shot boundary data from this study will be used when analysing the configuration of meaningful shots in sequences in the future.

• 한국패션뷰티학회지
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• 제3권2호
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• pp.25-30
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• 2005

This study is to research the symbolism of the Eastern and Western costumes' color in films. Therefore, I chose movies about colors, which are 'Trzy Kolory', a Western movie directed by Krzysztof Kieslowski and 'Hero', an Eastern movie directed by Zhang Yimou. The purpose of this study is to figure out the symbolism of the common colors shown in both movie which are red, blue and white. Also, by comparing the eastern and western color symbols I studied the ambivalence of colors. Therefore, the comparison of the eastern and western color symbolisms are as the followings. The color red symbols charity in the movie and jealous, hatless, lies, expansion, self esteem, resist, struggle and sadness in the movie . The color blue symbols freedom, lost, gloomy and sadness in the movie and sacrifice and sadness in the movie . The color white symbols equality and emptiness in the movie and true love, sadness and sacrificed love in the movie . Consequently, it appears that the colors symbolize differently in the East and the West. Three series of which is the West movie has more positive meanings than the Eastern movie. Therefore, the meanings of symbols of the costumes' color are different in the East and West as they have different cultures, and also they could be expressed differently by the directors intention.

• 한국진공학회:학술대회논문집
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• 한국진공학회 1999년도 제17회 학술발표회 논문개요집
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• pp.63-63
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• 1999

The stability of hydrogenated amorphous silicon (a-Si:H) films under the light soaking are very important since the applications of a-Si:H films are solar cells, color sensors, photosensors, and thin film transistors(TFTs). We found the changes of the electric conductivity and the conductivity activation energy (Ea) of a-Si:H films by argon radical annealing. The deposition rate of a-Si:H films depends on the argon radical annealing time. The optical band gap and the hydrogen contents in the a-Si:H films are changes along the argon radical annealing time. We will discuss the microscopic processes of argon radical annealing in a-si:H films.

• 한국재료학회지
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• 제23권12호
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• pp.695-701
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• 2013

To understand how reactivity between reinforcing nanoparticles and aqueous solution affects electrodeposited Cu thin films, two types of commercialized cerium oxide (ceria, $CeO_2$) nanoparticles were used with copper sulfate electrolyte to form in-situ nanocomposite films. During this process, we observed variation in colors and pH of the electrolyte depending on the manufacturer. Ceria aqueous solution and nickel sulfate ($NiSO_4$) aqueous solutions were also used for comparison. We checked several parameters which could be key factors contributing to the changes, such as the oxidation number of Cu, chemical impurities of ceria nanoparticles, and so on. Oxidation number was checked by salt formation by chemical reaction between $CuSO_4$ solution and sodium hydroxide (NaOH) solution. We observed that the color changed when $H_2SO_4$ was added to the $CuSO_4$ solution. The same effect was obtained when $H_2SO_4$ was mixed with ceria solution; the color of ceria solution changed from white to yellow. However, the color of $NiSO_4$ solution did not show any significant changes. We did observe slight changes in the pH of the solutions in this study. We did not obtain firm evidence to explain the changes observed in this study, but changes in the color of the electrolyte might be caused by interaction of Cu ion and the by-product of ceria. The mechanical properties of the films were examined by nanoindentation, and reaction between ceria and electrolyte presumably affect the mechanical properties of electrodeposited copper films. We also examined their crystal structures and optical properties by X-ray diffraction (XRD) and UV-Vis spectroscopy.

• 한국표면공학회지
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• 제55권4호
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• pp.187-195
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• 2022

WO₃ thin films were synthesized by electrodeposition, and their electrochromic properties were investigated. The application of static voltage produced WO₃ films with a smooth, compact surface morphology, and the film thickness linearly increased with the application time. The thicker film showed a strong color contrast but a slow color-switching speed. High-temperature heat treatment exceeding 300 ℃ induced a phase transformation from an amorphous to a monoclinic structure and resulted in degraded electrochromic performance. Furthermore, the optimized WO₃ thin films demonstrated their potential application as electrochromic boards for writing and erasing letters using a simple modified 3D printer in a rapid, accurate process

• 한국포장학회지
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• 제6권1호
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• pp.24-30
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• 2000

분자량이 다른 네 종류의 키토산으로 제조한 필름의 색깔, 수증기투과도, 수분용해도, 인장강도 및 연신율을 측정하여 키토산 필름의 특성에 미치는 키토산의 분자량의 영향에 대해 조사하였다. 일반적으로 키토산 필름의 총색차와 수분용해도는 키토산의 분자량이 증가할수록 감소하였으며, 반면에 인장강도와 연신율은 키토산의 분자량이 증가할수록 증가하는 경향을 나타냈다. 키토산 필름의 수증기투과도는 키토산의 분자량과 뚜렷한 상관관계를 보이지 않았다.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2016년도 제50회 동계 정기학술대회 초록집
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• pp.407.1-407.1
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• 2016

Electrochromism is defined as a phenomenon which involves persistently repeated change of optical properties between bleached state and colored state by simultaneous injection of electrons and ions, sufficient to induce an electrochemical redox process. Due to this feature, considerable progress has been made in the synthesis of electrochromic (EC) materials, improvements of EC properties in EC devices such as light shutter, smart window and variable reflectance mirrors etc. Among the variable EC materials, solid-state inorganics in particular, metal oxide semiconducting materials such as nickel oxide (NiO) have been investigated extensively. The NiO that is an anodic EC material is of special interest because of high color contrast ratio, large dynamic range and low material cost. The high performance EC devices should present the use of standard industrial production techniques to produce films with high coloration efficiency, rapid switching speed and robust reversibility. Generally, the color contrast and the optical switching speed increase drastically if high surface area is used. The structure of porous thin film provides a specific surface area and can facilitate a very short response time of the reaction between the surface and ions. The large variety of methods has been used to prepare the porous NiO thin films such as sol-gel process, chemical bath deposition and sputtering. Few studies have been reported on NiO thin films made by using sol-gel method. However, compared with dry process, wet processes that have the questions of the durability and the vestige of bleached state color limit the thin films practical use, especially when prepared by sol-gel method. In this study, we synthesis the porous NiO thin films on the fluorine doped tin oxide (FTO) glass by using sputtering and anodizing method. Also we compared electrical and optical properties of NiO thin films prepared by sol gel. The porous structure is promised to be helpful to the properties enhancement of the EC devices.