• 설비공학논문집
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• 제27권9호
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• pp.475-483
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• 2015

In Korea, a typically hot and humid summer means that air-conditioners consume a large quantity of electricity; accordingly, the simultaneous usage of an indirect evaporative cooler may reduce the sensible-heat level and save the amount of electricity that is consumed. In this study, the heat-transfer and pressure-drop characteristics of an indirect evaporative cooler made of paper/plastic film were investigated under both dry and wet conditions; for the purpose of comparison, an indirect evaporative cooler made of plastic film was also tested. Our results show that the indirect evaporative efficiencies under a wet condition are greater than those under a dry condition, and the efficiencies of the paper/plastic sample (109% to 138%) are greater than those (67% to 89%) of the plastic sample; in addition, the wet-surface, indirect evaporative efficiencies of the paper/plastic sample are 32% to 36% greater than those of the plastic sample. Further, the wet-surface pressure drops of the paper/plastic sample are 13% to 23% larger than those of the plastic sample, and this might have been caused by the surface roughness of the samples. A rigorous heat-transfer analysis revealed that, for the plastic sample, 30% to 37% of the wet channels remained dry, whereas all of the channels were wet for the paper/plastic sample.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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• pp.962-965
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• 2004

In this work, thin films of amorphous silicon (a-Si) were formed on plastic substrates by sputtering deposition and crystallized using excimer laser irradiation. As the entire process is conducted at room temperature, and the laser irradiation-induced heating is confined to the thin film, the plastic substrate is not subjected to thermal stresses. The microstructure resulting from the laser irradiation was dependent on the laser irradiation energy density and the composition of the underlying buffer layers. It was found that a layer of AlN deposited as a buffer between the plastic and the a-Si film increased the endurance of the a-Si film under laser irradiation, and resulted in polycrystalline Si grains up to 100nm in diameter.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2003년도 International Meeting on Information Display
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• pp.468-471
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• 2003

We firstly report liquid crystal shutter based on plastic film and its application to 3D shutter for stereoscopic displays. Plastic liquid crystal shutters have remarkable advantages compared to conventional glass liquid crystal shutters. They are thin, light and non-breakable so that very comfortable 3D shutter eye-wear can be realized using them. The concepts, optical performances and reliability test results of plastic film liquid crystal shutters are presented.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2002년도 하계학술대회 논문집
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• pp.194-197
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• 2002

Applying dual layer insulator on plastic substrates improved electrical characteristics of organic thin film transistor(TFT). A high-quality silicon dioxide(SiO$_2$) suitable for a insulator was deposited on plastic substrates by e-beam evaporation at 110$^{\circ}C$. The insulator film which was treated by N$_2$ annealing at 150$^{\circ}C$ showed excellent I-V, C-V characteristics. The dual layer insulator structure of polyimide-SiO$_2$ improved the roughness of SiO$_2$ surface and showed very low leakage current. In addition, the flat band voltage has been reduced from -2.5V to about 0.5V.

• 한국윤활학회:학술대회논문집
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• 한국윤활학회 2001년도 제34회 추계학술대회 개최
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• pp.331-340
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• 2001

Elastic-Plasitc Finite element analysis is peformed about the TiN coated medium. The normal contact is simulated by a rigid asperity pressing the surface of an elastic-plastic half-surface. The case of a surface film stiffer than the substrate is considered, and general solutions for the subsurface stress and deformation fields are presented for several coating thickness. Additionally, the critical normal loads for deformation in the substrate and coating fracture are calculated when the yield of TiN film follows the Maximum Principal Stress Theory and Von Mises Theory. The results can be subsumed in failure maps for TiN thin film on steel.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2001년도 창립10주년 제20회 학술발표회
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• pp.143-143
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• 2001

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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• pp.1463-1465
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• 2008

We report all-ink-jet printed inorganic/organic hybrid TFTs on plastic substrates. We have investigated the optimal printing conditions to make uniform patterned layers of gate electrode, dielectrics, source/drain electrodes, and semiconductor as a coplanar type TFT in a successive manner. All ink-jet printed devices have good mechanical flexibility and current modulation characteristic even when bent.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2002년도 하계학술대회 논문집
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• pp.185-189
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• 2002

Flexible displays such as plastic based LCDs and organic light-emitting diodes for mobile communication devices have been researched and developed at KETI in KOREA since 1997. The Plastic film substrate has so poor thermal tolerance and non-rigidness that the fabrication of active devices and panel assembly have to perform at low temperature and pressure. In addition, high thermal expansion of the substrate is also a serious problem for reliable metallic film deposition. In this paper, we investigated particularly on the fundamental characteristics of various plastic substrates and then, suggested novel methods that improve the fabrication processes of plastic LCD panel. In order to maintain stable substrate surface and uniform cell gap during panel assembly, we utilized newly-invented iii and vacuum chuck. Electro-optical characteristics of fabricated plastic LCD are better than or equivalent to those of typical glass based LCDs though it is thinner, lighter-weight and more robust.

• 한국유기농업학회지
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• 제25권1호
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• pp.187-201
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• 2017

이 연구는 도라지의 유기재배를 위하여 피복물 처리에 따른 도라지 뿌리의 생육특성 및 사포닌, 항산화 활성에 미치는 영향을 구명하고자 실시되었다. 3년근 도라지를 이식 후, 흑색 비닐, 톱밥, 쌀겨 및 무피복구의 뿌리의 길이는 비닐, 톱밥, 무피복구에서 24.0~27.5 cm로 길었으며, 직경에서는 비닐 피복구에서 가장 굵은 30.0 mm로 나타났다. 지근의 수도 비닐 피복구에서 가장 많은 36.0개로 조사되었으며, 수량과 관련성이 있는 생체중은 지근의 수와 직경이 가장 굵었던 비닐 피복구에서 130 g으로 가장 높게 나타났으며 무피복구에서 56 g으로 가장 낮게 나타났다. plantycodin D3와 deapioplatycodin D 함량은 톱밥 피복구에서 가장 높게 나타났으며, 도라지의 총 polyphenol 및 flavonoid 함량은 비닐 피복구에서 각각 11.0, 8.6 mg/g으로 가장 높게 나타났다. Polygalacin D와 ABTS와의 상관관계는 $-0.591^*$로 부의 상관관계를 보였으나, 나머지 성분에서는 상관관계가 없는 것으로 나타났다. 따라서 도라지 유기 재배 시 피복재료에 따른 뿌리의 특성, 사포닌함량과 항산화성분 등의 유의적인 차이가 나타나는 것을 확인할 수 있었다.

• 한국식품영양과학회지
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• 제17권3호
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• pp.191-197
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• 1988

전분가공식품의 주요 원료인 옥수수전분과 단백질강화 또는 육란백질의 대치 단백질인 분리대두단백질을 사료로 하여 전분-단백질의 이성분혼합비율을 오늘날 흔히 사용되고 있는 plastic flim으로 포장하여 상대습도 90%와 $40^{\circ}C$에서 포장재료의 성질이 흡습특성에 미치는 영향을 조사하였다. 포장재료별 투습도는 0.02mm LDPE필름이 $32.6g/m^2/24hrs$ 0.04mm LDPE필름이 $14.01g/m^2/24hrs,$ 0.02mm OPP 필름이 $7.30g/m^2/24hrs,$ 그리고 0.02mm LDPE /0.02 mmOPP coating필름이 $4.86g/m^2/24hrs,$로서 동일한 두께성에서 비교해 볼 때 LDPE필름보다 OPP필름이 습기의 차단성이 대략 4배이상 우수함을 알 수 있었다. 또 식품시료를 포장하여 저장하는 경우도 동일한 두께의 LDPE필름보다 OPP필름이 습기의 차단성이 우수하였다. 그리고 포장한 혼합물의 저장시간에 따른 흡습속도는 일반적으로 전분함량보다는 단백질함량이 많을수록 흡습속도가 크게 증가하는 것을 알 수 있었다.