• Journal of the Semiconductor & Display Technology
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• v.5 no.4 s.17
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• pp.29-34
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• 2006

In order to design an OLED(Organic Luminescent Emitting Device) evaporation system, geometric simulation of film thickness distribution profile is required. For the OLED evaporation process, thin film thickness uniformity is of great practical importance. In this paper, a geometric modeling algorithm is introduced for process simulation of the OLED evaporating process. The physical fact of the evaporating process is modeled mathematically. Based on the developed method, the thickness of the thin-film layer can be successfully controlled.

• Journal of the Korean Society of Costume
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• v.50 no.3
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• pp.117-131
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• 2000

The purpose of this study is for affirmation about fashion and film industry has very important relationship through the image of film fashion in 1990. To this processing , films in 1990 were analyzed by the back ground, time place, persons's status are expressed in period movie but the person's characters, development of story mood in contemporary movies. The contents of this study are as follows : First, film fashion which was related mass fashion design and concept development and fashion designers as constume services were considered. Second, the change of star image through the 20th century. The roles and new image of film fashion in period movies and contemporary movies in 1990 were searched. Third, proposal and results were confirmed for expansion of fashion industry and film industry together. Finally, from the latter of 20th century, a lot of fashion designers have participated in film works than before, So the images of films were sued and reflected as new mass trend . Especially retro-romantic mood was expressed in fashion trend due to period movie fashion. Also minimal city look and elegance glamourous look are represented cause of contemporary movie fashion. Therefore, the cooperation between film productions and fashion professionals is very important for promotion of Korean culture development in 21st century, 'the century of image'.

• Journal of Sensor Science and Technology
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• v.27 no.6
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• pp.386-391
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• 2018

To analyze the film cooling in a liquid rocket engine, it is necessary to understand the characteristics of the wall-impingement liquid film. We designed an optimal two-dimensional device for measuring the thickness of the liquid film thickness. This device quantitatively measures the liquid-film thickness distribution. In previous liquid-film thickness measuring devices, the liquid film was formed over the entire area of the sensor. However, its formation depended on injection conditions. To compensate for this, optimal resistors are selected. Additionally, saturation variations with partial saturation are analyzed. Furthermore, calibration using the enhanced plate method is conducted with improvements in spatial resolution. The device designed here can be used to analyze the properties of an impingement liquid film with a slit injector. This study can be used for film-cooling analysis in liquid rocket engines.

• The Research Journal of the Costume Culture
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• v.22 no.1
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• pp.167-182
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• 2014

This study researched the symbolic meaning of the costume colors in the independent film . The purpose of the study is to shed light on the relation between a film and the clothing color by exploring the symbolic meaning of costume colors as based on place images and as reflected in characters' internal psychological states and situations. The conclusions of this study are as follows. First, the colors primarily presented were neutral shades of black and white or dark, almost-black tones, representing the negative narrative structure and depicting the image of a human being. Second, a series of bright blue shades were presented to reflect the positive narrative structure of a human being returning successfully to reality. Third, the application of color, involving both the psychological aspect as well as the symbolism of color, was effectively delivered to the audience. Fourth, the emphasis on color in the smallest details of costumes was analyzed, and it was found that symbolic color effectively communicated the whole image of transformation as the story progressed, clearly delivered delicate emotional messages, and contained symbolism relating to particular places and situations.

• Tribology and Lubricants
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• v.34 no.1
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• pp.9-15
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• 2018

Modern high-performance automotive turbochargers (TCs) implement ceramic hybrid angular contact ball bearings in series with squeeze film dampers (SFDs) to enhance transient responses, thereby reducing the overall emission levels. The current study predicts the rotordynamic responses of the commercial automotive TCs (compressor wheel diameter = ~53 mm, turbine wheel diameter = ~43 mm, and shaft diameter at the bearing locations = ~7 mm) supported on ball bearings and SFDs for various design parameters of SFDs, including radial clearance, axial length, lubricant viscosity, and rotor imbalance conditions (i.e., amplitudes and phase angles) while increasing rotor speed up to 150 krpm. This study validates the predictive rotor finite element model against measurements of mass, polar and transverse moments of inertia, and free-free mode natural frequencies and mode shapes. A nonlinear rotordynamic model integrates nonlinear force coefficients of SFDs to calculate the transient responses of the TC rotor-bearing system. The predicted results show that SFD radial clearances, as well as phase angles of rotor imbalances, have the paramount effect on the dynamic responses of TC shaft motions.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2007.06a
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• pp.424-425
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• 2007

Anti-Reflection and High-reflection coating on the facet of semiconductor laser diode. To prevent internal feedback from both facets for realizing super luminescent diode and reducing the reflection-induced intensity noise of laser diode. Anti-Reflection coating Film was designed by Macleod Simulator. Coating Materials were decided $Ti_3O_5$ and $SiO_2$. Thickness of Coating layer $Ti_3O_5/SiO_2$ were 105[nm], 165[nm]. In the study Anti-Reflection coating Film was design for Laser diode and deposited by Ion-Assisted Deposition system. Then manufactured thin film measured electrical properties(L-I-V, Se, Resistor) and Optical properties(wavelength FFP). Slop-efficiency and FFP characteristic is 0.302[W/A], $22.3^{\circ}$(Horizontal), $24.4^{\circ}$(Vertical).

• Elastomers and Composites
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• v.54 no.2
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• pp.123-127
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• 2019

Shrink film is currently being used for plastic container lavels to avoid the use of glue. Polyethylene terephthalate (PET) bottle lavels also use shrink films in the same PET materials for easy recycling of PET bottles. An air layer is generated between the shrink film and PET bottle surface due to the bent shape of the bottle surface. This air layer can insulate external heat, as air has a relatively lower thermal conductivity. In this study, the insulation property of the air layer was examined by computer simulation. Two PET bottle models were used, one with and the other without an air layer between the PET bottle surface and lavel. The two bottle models were filled with cold liquid and exposed to room temperature for 6 h, and the temperatures of the contents were then compared. The results showed that the temperature of the contents in the bottle with the air layer was lower than that without the air layer by at least $2^{\circ}C$. This study suggests an effective lavel design of PET bottles while ensuring that the temperature of the bottle contents is maintained.

• Tribology and Lubricants
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• v.33 no.4
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• pp.127-133
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• 2017

In order to characterize the adhesive properties and failure mechanisms of diamond-like carbon (DLC) films of two different thicknesses (130 nm and $1.2{\mu}m$), deposited by plasma-enhanced chemical vapor deposition on a Si substrate, scratch testing with a micro-indenter ($12.5{\mu}m$ tip radius) was performed under a linearly increasing load. These scratch tests were conducted under the same test conditions for both films. The critical load of each film was estimated from the scratch test results, based on a sharp increase in the coefficient of friction and a clear distinction of failure modes. The critical load was the basis for evaluating the adhesion strength of the films, and the $1.2{\mu}m-thick$ DLC film had superior adhesion strength. For better understanding of the failure modes, the following analyses were conducted: friction behavior and scratch tracks analysis using scanning electron microscopy, energy-dispersive spectroscopy, and 3-D profilometry. The scratch test results showed that failure modes were related to the thickness of the films. The 130 nm-thick DLC film underwent cohesive failure modes (cracks and chipping) before reaching to a gross failure stage. On the other hand, the thicker DLC film ($1.2{\mu}m-thick$) did not exhibit micro cracks before a sudden gross failure of the film together with the evidence of cracking and chipping of the Si substrate.

• Korean Journal of Optics and Photonics
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• v.14 no.5
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• pp.555-564
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• 2003

WDM thin film filters for fiber optical communication were designed using Fabry-Prot type multiple cavity filters and an equivalent thin film technique. As the number of cavities in multiple cavity filters increases, it becomes difficult to design the filters due to a great number of variables (the number of cavities, period of reflectors, order of spacers). To solve the problem of design, we treated the fewest variables, regarding symmetrical thin films as equivalent layers, and we applied structural and numerical formulas based on an analysis method of multiple cavity filters. The equivalent thin film technique was able to provide systematic and quantitative design of the WDM thin film filters.

• International Journal of Costume and Fashion
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• v.6 no.1
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• pp.71-83
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• 2006

This study is about how Art Nouveau and Art Deco clothing are represented in the costume design of film created after those periods and examines the recreation process of visual media. The costume design of The Wings of the Dove tried to reflect the mixture of fashion trends that could be seen during the times. Milly???s clothes seem to focus on recreating the special features of the 1900???s fashion trends more visually while Kate???s clothes are represented in a strong and simple way to emphasize her personality. The costumes in The Great Gatsby, tried to reinvent the 1920???s clothes in a romantic way. Daisy???s and Gatsby???s costumes were based on the aesthetics of the 1920???s clothing. but emphasized the symbolic nature of the characters to give a greater dramatic effect. By analyzing and comparing, it can be seen that, while costume design usually begin with painstaking research into the historical period in which the film is set it is often altered to highlight aspects of the story. such as the theme and the characters, in an effort to create a stronger dramatic effect. Costume design remains one of the most effective means for a director to visually express the personality and desires of a film???s characters. The ideal aim of costume design is to create something new but at the same time, remain true to the period by being grounded in accurate research.