• 보존과학회지
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• 제30권2호
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• pp.149-156
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• 2014

기존에 사용되던 Methyl bromide가 환경오염의 문제로 인해 규제대상이 되면서, 이를 대체할 친환경 방제처리방법에 대한 필요성이 대두되었다. 따라서 식품분야 등에서 방제의 목적으로 사용되어온 저산소 및 열처리 기술을 문화재 생물피해 방제 분야에 적용하고자 한다. 저산소처리법은 질소가스 주입으로 공기 중의 산소농도를 낮추어, 열처리법은 가온 또는 냉각을 이용하여 충 균을 치사시키는 방법이다. 본 연구에서는 목조건축물과 관련된 재질인 목재, 안료, 지류, 섬유 등에 저산소처리법과 열처리법을 적용하여 평가하였다. 저산소처리의 재질안정성 평가 결과 목재의 함수율이 약간 감소하였으나 자연회복력을 기대할 수 있을 정도인 것으로 확인되었으며 안료, 지류, 섬유의 색차 및 강도는 안정하였다. 열처리법 적용 시에는 안료의 박리현상이 관찰되었다. 저산소처리법과 재질에 안정한 온도조건에서의 열처리는 기존에 사용되어온 화학적 처리방법 문제의 대안으로서 충분히 고려 가능할 것으로 보인다 .

• 한국염색가공학회지
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• 제23권3호
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• pp.195-200
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• 2011

Silicone-coated fabric were treated by oxygen low temperature plasma to improve the adhesion. The surface of silicone-coated fabric was modified with gaseous plasma of several discharge power in the presence of oxygen gas at 1Torr pressure. Oxygen plasma treatment introduces oxygen-containing functional groups and micro-pittings on the silicone-coated fabric surface. The treated fabrics with oxygen low temperature plasma were measured by contact angle analyzer and XPS(X-ray photoelectron spectroscopy), and interfacial adhesion was measured by T-peel test. The surface of fabric was investigated by SEM photographs. The chemical and physical modification of the surface wettabillity by plasma treatment can increase the adhesion.

• 한국염색가공학회지
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• 제19권1호
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• pp.45-52
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• 2007

Polyacrylonitrile(PAN) fiber was treated with low-temperature plasmas of argon and oxygen for surface modification, and its surface chemical structure and morphology were examined by a field emission scanning electron microscope(FESEM) and a Fourier-transform infrared microspectroscopy(IMS). The argon-plasma treatment caused the only mechanical effect by sputtering of ion bombardment, whereas the oxygen plasma brought about a chemical effect on the PAN fiber surface. The experimental evidences strongly suggested that cyclization of nitrile group and crosslinking were likely to occur in the oxygen-plasma treatment. On the other hand, with the argon-plasma treatment, numerous my pits resulted in ranging from several tens to hundreds nanometers in radius. The plasma sensitivity of functional groups such as C-H, $C{\equiv}N$, and O-C=O groups in the PAN fiber was dependent on their chemical nature of bonding in the oxygen-plasma, in which the ester group was the most sensitive to the plasma. Vacuum-ultraviolet(VUV) radiation emitted during plasma treatment played no substantial role to alter the surface morphology.

• Transactions on Electrical and Electronic Materials
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• 제17권2호
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• pp.113-117
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• 2016

Temperature dependent reverse-bias current-voltage (I-V) characteristics in Cu Schottky contacts to oxygen plasma treated n-InP were investigated. For untreated sample, current transport mechanisms at low and high temperatures were explained by thermionic emission (TE) and TE combined with barrier lowering, respectively. For plasma treated sample, experimental I-V data were explained by TE or TE combined with barrier lowering models at low and high temperatures. However, the current transport was explained by a thermionic field emission (TFE) model at intermediate temperatures. From X-ray photoemission spectroscopy (XPS) measurements, phosphorus vacancies (VP) were suggested to be generated after oxygen plasma treatment. V_P possibly involves defects contributing to the current transport at intermediate temperatures. Therefore, minimizing the generation of these defects after oxygen plasma treatment is required to reduce the reverse-bias leakage current.

• 한국분말재료학회지
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• 제19권5호
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• pp.343-347
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• 2012

In this study, an oxygen plasma treatment was used as a low temperature debinding method to form a conductive copper feature on a flexible substrate using a direct printing process. To demonstrate this concept, conductive copper patterns were formed on polyimide films using a copper nanoparticle-based paste with polymeric binders and dispersing agents and a screen printing method. Thermal and oxygen plasma treatments were utilized to remove the polymeric vehicle before a sintering of copper nanoparticles. The effect of the debinding methods on the phase, microstructure and electrical conductivity of the screen-printed patterns was systematically investigated by FE-SEM, TGA, XRD and four-point probe analysis. The patterns formed using oxygen plasma debinding showed the well-developed microstructure and the superior electrical conductivity compared with those of using thermal debinding.

• 공업화학
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• 제21권1호
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• pp.98-103
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• 2010

저압 플라즈마와 대기압 플라즈마를 사용하여 폴리카보네이트를 처리한 후 표면 개질 효과를 접촉각 측정을 통하여 비교 분석하였다. 플라즈마 처리 전의 폴리카보네이트의 탈이온수의 접촉각은 $82.31^{\circ}$이었으나 플라즈마 처리 후의 최소 접촉각은 산소 분위기의 저압 플라즈마에서 $9.17^{\circ}$의 최소 접촉각을 얻을 수 있었다. 플라즈마 방전 전력과 반응기체의 유량 증가에 따른 접촉각의 변화는 크지 않았으나 지속적으로 감소하는 특성을 보였다. 플라즈마 처리 후 경과시간에 따라 접촉각의 증가 현상을 보여 플라즈마 처리 후 후속 공정은 가급적 빨리 진행하는 것이 표면에너지 증가에 따른 효과를 이용하는데 효율적이다. 표면 화학결합 분석에서 산소분위기의 플라즈마 처리는 표면에 상대적으로 많은 극성 작용기를 형성하였다. 전반적으로 폴리카보네이트의 표면 개질에서 저압 산소플라즈마를 사용하여 처리하는 것이 대기압 플라즈마보다 효과적으로 친수성 표면을 만들 수 있었다.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2013년도 제45회 하계 정기학술대회 초록집
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• pp.251.1-251.1
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• 2013

Combination of oxidative vacuum annealing and oxygen plasma treatment can serve as a simple and efficient method of line-width modification of imprinted nanopatterns. Since the vacuum annealing and oxygen plasma could lead mass loss of polymeric materials, either one of the process can yield a narrowed patterns. However, the vacuum annealing process usually demands quite high temperatures (${\geq}300^{\circ}C$) and extended annealing time to get appreciable line-width reduction. Although the plasma treatment may be considered as an effective low temperature rapid process for the line-width reduction, it is also suffering for the lowered controllability on application to very fine patterns. We have found that the vacuum annealing temperature can be lowered by introducing the oxygen in the vacuum process and that the combination of oxygen plasma treatment with the vacuum annealing could yield the best result in the line-with reduction of the imprinted polymeric nanopatterns. Well-defined line width reduction by more than 50% was successfully demonstrated at relatively low temperatures. Furthermore, it was verified that this process was applicable to the nanopatterns of different shapes and materials.

• 한국의상디자인학회지
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• 제11권1호
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• pp.43-51
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• 2009

The cotton, wool, cotton/wool blended(80:20) and tencel fabrics were treated with low temperature oxygen or argon plasma, enzymes(cellulase or protease), or oxygen plasma-enzyme and examined for their weight loss and conditions for treatment for the environment friendly finishing. In the plasma treatment argon gas had better effect on the weight loss than oxygen gas did and the weight loss of all the fabrics was increased as increasing discharge power and discharge time. The weight loss of cotton, wool, cotton/wool blended(80:20) fabrics decreased in a large measure after 1 hr but that of tencel didn't decrease after 1 hr. In case of cellulose fibers oxygen gas plasma induced chemical functional groups on the surface of substrate more than argon gas plasma did so the weight loss of wool was larger than that of cotton, tencel fabrics in oxygen plasma-enzyme treatment. The weight loss of cotton and tencel fabrics decreased the initial stage because oxygen plasma pre-treatment caused cross linking as well as etching effect but argon plasma pre-treatment didn't. The plasma pre-treatment cleared the way for enzyme treatment on the whole but oxygen plasma pre-treatment bear in hand the increase of weight loss more or less because of the cross linking on the surface of cellulose fibers. The appropriate conditions for plasma treatment was 10-1Torr, 40W for 30minutes and for cellulase treatment were enzyme concentration of $3g/{\ell}$, pH 5, $60^{\circ}C$ for 1hr and for protease treatment were enzyme concentration of $4g/{\ell}$ pH 8, $60^{\circ}C$ for 1hr.

• 대한전기학회논문지:전기물성ㆍ응용부문C
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• 제52권6호
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• pp.261-266
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• 2003

We investigated the effect of oxygen plasma treatment of indium-tin oxide(ITO) surface on the performance of electroluminescence(EL) devices. ITO surface treated oxygen plasma has been analyzed using atomic force microscope(AFM) and X-ray photoelectron spectroscopy(XPS), to investigate the relations between the properties of the ITO surface and the properties of the current-voltage-luminance(I-V-L) characteristics of the fabricated OLED with the structure of ITO(plasma treatment) / TPD / Alq$_3$/ Al. It is found that the oxygen plasma treatment of ITO anode improve the hole injection of the OLED due to the modification of the surface states. The treated ITO anode nay be low voltage with high luminance efficiency.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2003년도 추계학술대회 논문집 Vol.16
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• pp.263-266
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• 2003

The fine $YBa_2Cu_3O_x$ powder ($0.2{\sim}1.0\;{\mu}m$) is produced by sol-gel method, and electrophoresis deposition is used for the preparation of $YBa_2Cu_3O_x$ thick films which are deposited on Ag wire. The oriented $YBa_2Cu_3O_x$ was tried to be prepared by the zone-melting method under low oxygen partial pressure. The orientation and the phase composition were examined by the X-ray diffraction and the superconductivities were measured by 4 line method. The critical current densities are still quite low, which may be due to unsuitable technical parameters for zone-melting of $YBa_2Cu_3O_x$ thick films. Therefore the heat treatment condition and controlling of low oxygen partial pressure should be improved in the future experiment.