• Title/Summary/Keyword: Stripes

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High Efficiency AMOLED Using Hybrid of Small Molecule and Polymer Materials Patterned by Laser Transfer

  • Chin, Byung-Doo;Suh, Min-Chul;Kim, Mu-Hyun;Kang, Tae-Min;Yang, Nam-Choul;Song, Myung-Won;Lee, Seong-Taek;Kwon, Jang-Hyuk;Chung, Ho-Kyoon;Wolk, Martin B.;Bellmann, Erika;Baetzold, John P.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2003.07a
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    • pp.163-166
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    • 2003
  • Laser-Induced Thermal Imaging (LITI) is a laser addressed patterning process and has unique advantages, such as high-resolution patterning with over-all position accuracy of the imaged stripes within 2.5 micrometer and scalability to large-size mother glass. This accuracy is accomplished using real-time error correction and a high -resolution stage control system that includes laser interferometers. Here the new concept of mixed hybrid system which complement the advantages of small molecular and polymeric materials for use as an OLED; our system can realize the easy processing of polymers and high luminance efficiency of recently developed small molecules. LITI process enables to pattern the stripes with excellent thickness uniformity and multi-stacking of various functional layers without using any type of fine metal shadow mask. In this study, we report a full-color hybrid OLED using the multi-layered structure of small molecular/polymeric species.

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Decomposition of Interference Hyperspectral Images Based on Split Bregman Iteration

  • Wen, Jia;Geng, Lei;Wang, Cailing
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.12 no.7
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    • pp.3338-3355
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    • 2018
  • Images acquired by Large Aperture Static Imaging Spectrometer (LASIS) exhibit obvious interference stripes, which are vertical and stationary due to the special imaging principle of interference hyperspectral image (IHI) data. As the special characteristics above will seriously affect the intrinsic structure and sparsity of IHI, decomposition of IHI has drawn considerable attentions of many scientists and lots of efforts have been made. Although some decomposition methods for interference hyperspectral data have been proposed to solve the above problem of interference stripes, too many times of iteration are necessary to get an optimal solution, which will severely affect the efficiency of application. A novel algorithm for decomposition of interference hyperspectral images based on split Bregman iteration is proposed in this paper, compared with other decomposition methods, numerical experiments have proved that the proposed method will be much more efficient and can reduce the times of iteration significantly.

New Records of Creeping Ctenophores, Genus Coeloplana (Tentaculata: Platyctenida: Coeloplanidae), from Korea

  • Song, Jun-Im;Hwang, Sung-Jin;Lee, Sang-Hwa;Park, Joong-Ki
    • Animal Systematics, Evolution and Diversity
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    • v.27 no.1
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    • pp.47-52
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    • 2011
  • Creeping ctenophores, Coeloplana species, were collected by SCUBA divers throughout the year (November 2006 to June 2010) from the branches and polyp masses of encrusting dendronephthyas at a depth of 20-32m off Munseom Island (Seogwipo-si, Jeju-do, Korea). A single individual of a newly recorded species in Korea, Coeloplana bocki Komai, 1920, was collected together with C. anthostella from the same location on 16 August 2009. A large number of individuals of each species were subsequently collected from the host Dendronephthya aff. dendritica on 20 June 2010. C. bocki can be distinguished from C. anthostella Song and Hwang, 2010 and C. komaii Utinomi, 1963 by its unique blue and orange colored stripes, and/or the branching and anastomosing milky-white stripes encircling the aboral sense organ towards the margin. The detailed morphology and molecular sequence information (nuclear 18S rDNA, internal transcribed spacer 1, and mitochondrial cox1 gene sequences) for C. bocki is provided, and C. bocki and C. anthostella are compared.

Fabrication of Fine Organic Thin-Film Stripes Using a Hydrophobic Needle (소수성 Needle을 이용한 미세 유기 박막 Stripe 제작)

  • Kim, Jongmyeong;Lee, Jinyoung;Shin, Dongkyun;Park, Jongwoon
    • Journal of the Semiconductor & Display Technology
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    • v.19 no.1
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    • pp.73-78
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    • 2020
  • There appears lateral capillary force in a hydrophilic flat needle employed for the fabrication of fine organic thin-film stripes, bringing in an increase of the stripe width. It also causes the stripe thickness to increase with increasing coating speed, which is hardly observed in a normal coating process. Through computational fluid dynamics (CFD) simulations, we demonstrate that the lateral capillary flow can be substantially suppressed by increasing the contact angle of the needle end. Based on the simulation results, we have coated the outer surface of the flat needle with a hydrophobic material (polytetrafluoroethylene (PTFE) with the water contact angle of 104°). Using such a hydrophobic needle, we can suppress the lateral capillary flow of an aqueous poly(3,4-ethylenedioxythiophene): poly(4-styrenesulfonate) (PEDOT:PSS) to a great extent, rendering the stripe narrow (63 ㎛ at 30 mm/s). Consequently, the stripe thickness is decreased as the coating speed increases. To demonstrate its applicability to solution-processable organic light-emitting diodes (OLEDs), we have also fabricated OLED with the fine PEDOT: PSS stripe and observed the strong light-emitting stripe with the width of about 68 ㎛.

Priest's Robes in the Shoso-in of Japan and their maker (일본 정창원의 가사와 그 제작국)

  • 이춘계
    • Journal of the Korean Home Economics Association
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    • v.33 no.3
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    • pp.265-277
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    • 1995
  • Shoos-in in Nara of Japan has two kinds of Priest's robe(Kasa : 袈裟) ; one is Jiksung Kasa(織成袈裟), the other Janap Kasa(刺納袈裟). The former is listed as the 'Jiksung Kasa of tree bark color in seven stripes' in the Treasures Record(珍寶帳) of objects dedicated by Empress Komyo on the 21st day of the 6th month 756 A.D. The warp threads are brown and the weft threads are in groups of two in two colors-dark blue, green yellow and red. The latter is the so called Janap Kasa, of tree bark colors in seven stripes, that was also dedicated by Empress Komyo, 'Ja' means to stitch, and 'Nap' means to sew. It is made of patches of silk of various color, placed overlapping one another in patterns the resemble a mountainous landscape. All are stitched together in a continous quilt-like manner with purple threads. Japan has been under the strong influence of Korea Buddhism during the Nara period. Acording to Nihonki(日本書紀) and Sokunihonki(續日本紀), from 668 to 769 A.D., Japan has bought numorous objects including Buddhist utensils such as priest's robes and banners from Korea. Also during the same period Japan has perchased many kinds of dyestuffs and paint. So we can be certain that priest’s robes were imported from Korea like many other objects of Shoso-in.

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Fabrication of Fine PEDOT:PSS Stripes Using Needle Coating (Needle 코팅을 이용한 미세 PEDOT:PSS 스트라이프 제작)

  • Lee, Jinyoung;Park, Jongwoon
    • Journal of the Semiconductor & Display Technology
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    • v.18 no.3
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    • pp.100-104
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    • 2019
  • We have investigated the feasibility of fabricating fine stripes using needle coating for potential applications in solution-processed organic light-emitting diodes (OLEDs). To this end, we have employed an aqueous poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) solution that has been widely used as a hole injection layer (HIL) of OLEDs and performed needle coatings by varying the process parameters such as the coating gap and coating speed. As expected, the stripe width is reduced with increasing coating speed. However, the central thickness of the stripe is rather increased as the coating speed increases, which is different from other coating processes such as slot-die and blade coatings. It is due to the fact that the meniscus formed between the needle tip and the substrate varies depending sensitively on the coating speed. It is also found that the stripe width and thickness are reduced with increasing coating gap. To demonstrate its applicability to OLEDs, we have fabricated a red OLED stripe and obtained light emission with the width of about 90㎛.

Study of Stripe Pattern Appeared in Apparel Design - Focusing on Western Women's Fashion after 20th Centuries - (의상(衣裳) 디자인의 줄무늬(Stripe Pattern) 연구(硏究) - 20세기(世紀) 이후(以後) 서양(西洋) 여성(女性) 패션을 중심(中心)으로 -)

  • Kim, Ju-Eun;Cho, Kyu-Hwa
    • Journal of Fashion Business
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    • v.6 no.4
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    • pp.99-112
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    • 2002
  • The purpose of this study is to find out various types of stripes pattern and to review its' design expression by analysing stripe pattern and visual effect appeared in western women's fashion after 20th centuries. As regards the visual effect of stripe pattern, on the basis of the stripe pattern's direction laid out, we made an investigation of it by classfying it into verticality, horizontality, slant line and mixture of them according to its' gap and thickness. Here are the 4 features of the stripe pattern appeared in modern fashions. The first, graphic variation based on diverse variation and reconstruction and combination between other motives is being onthe rise as a new expression. The second, colorful stripes of Missoni can be exanpled as the trend of diversification of color. The third, as regards the trend of mismatch in pattern, coordination through mismatch can produce experimental and post-modern image. The fourth, as for the expression of draping effect, we find that stripe pattern can maximaze visual effect through draping by inducing visual stimulus, as well as can express human body in a beautiful manner.

Comparison of Slim Appearance for 2D Image and 3D Virtual Clothing Images Based on Stripe Arrangement (스트라이프 조건에 따른 2차원 이미지와 3차원 가상착의 이미지의 착용효과 비교)

  • Park, Soyoung;Lee, Yejin
    • Journal of the Korean Society of Clothing and Textiles
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    • v.46 no.2
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    • pp.321-330
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    • 2022
  • This study analyzed the difference between 2D image and 3D virtual clothing images based on stripe arrangement to obtain fundamental data for slim appearance. First, the slimming effect according to the three types of stripe ratio was examined. Subsequently, the slimming effects of seven types of one-piece dress designs according to the stripe location were analyzed. Subjective ranking was evaluated. The width items and radius of curvature were measured for the image's respective parts. Consequently, in 2D image and 3D virtual clothing images, the one with the narrowest stripe ratio was evaluated as the slimmest; however, the conditions for the slimming effect were different. In the seven one-piece dress designs, a difference was apparent in the ranking of the 2D image and 3D virtual clothing images. In the 3D virtual clothing image, arranging the stripes on the entire garment proved inefficient. The stripes were curved according to the curvature of the human body, creating an optical illusion that differed from that of the 2D image.

Origami inspired Temperature Sensor based on Stimuli-Responsive Hydrogel (종이접기 기반 자극 반응성 하이드젤 온도 센서 연구)

  • Na, Jun-Hee
    • Journal of Sensor Science and Technology
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    • v.26 no.1
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    • pp.35-38
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    • 2017
  • A thermally responsive hydrogel has reversibility with temperature during swelling. Here, we proposed origami inspired temperature sensor by using multi-layered hydrogel film. The formation of patterned stripes on microscale film drives bending to an angle that can be controlled linearly. Although temperature range was not wide, measured sensitivity of sensors has high resolution and accuracy. It providing a powerful platform for the design of sensitive sensors and that easily adapt other type of sensors in microscale.

Skew Correction of Business Card Images for PDA Application (PDA 응용을 위한 명함 영상의 회전 보정)

  • 박준효;장익훈;김남철
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.28 no.12C
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    • pp.1225-1238
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    • 2003
  • We present an efficient algorithm for skew correction of business card images obtained by a PDA (personal digital assistant) camera. The proposed method is composed of four parts: block adaptive binarization (BAB), stripe generation, skew angle calculation, and image rotation. In the BAB, an input image is binarized block by block so as to lessen the effect of irregular illumination and shadow over the input image. In the stripe generation, character string clusters are generated merging adjacent characters and their strings, and then only clusters useful for skew angle calculation are output as stripes. In the skew angle calculation, the direction angles of the stripes are calculated using their central moments and then the skew angle of the input image is determined averaging the direction angles. In the image rotation, the input image is rotated by the skew angle. Experimental results shows that the proposed method yields skew correction rates of about 93% for test images of several types of business cards acquired by a PDA under various surrounding conditions.