• 제목/요약/키워드: Hybrid film

검색결과 533건 처리시간 0.03초

High Temperature Durability Amorphous ITO:Yb Films Deposited by Magnetron Co-Sputtering

  • Jung, Tae Dong;Song, Pung Keun
    • 한국표면공학회지
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    • 제45권6호
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    • pp.242-247
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    • 2012
  • Yb-doped ITO (ITO:Yb) films were deposited on unheated non-alkali glass substrates by magnetron cosputtering using two cathodes (DC, RF) equipped with the ITO and $Yb_2O_3$ target, respectively. The composition of the ITO:Yb films was controlled by adjusting the RF powers from 0 W to 480 W in 120 W steps with the DC power fixed at 70 W. The ITO:Yb films had a higher crystallization temperature ($200^{\circ}C$) than that of the ITO films ($170^{\circ}C$), which was attributed to both larger ionic radius of $Yb^{3+}$ and higher bond enthalpy of $Yb_2O_3$, compared to ITO. This amorphous ITO:Yb film post-annealed at $170^{\circ}C$ showed a resistivity of $5.52{\times}10^{-4}{\Omega}cm$, indicating that a introduction of Yb increased resistivity of the ITO film. However, these amorphous ITO:Yb films showed a high etching rate, fine pattering property, and a very smooth surface morphology above the crystallization temperature of the amorphous ITO films (about $170^{\circ}C$). The transmittance of all films was >80% in the visible region.

FCVA 방법으로 증착된 DLC 박막의 열처리에 따른 구조적 물성 분석 (Effects of Thermal Treatment on Structural Properties of DLC Films Deposited by FCVA Method)

  • 김영도;장석모;박창균;엄현석;박진석
    • 대한전기학회논문지:전기물성ㆍ응용부문C
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    • 제52권8호
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    • pp.325-329
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    • 2003
  • Effects of thermal treatment on the structural properties of diamond-like carbon (DU) films were examined. The DLC films were deposited by using a modified filtered cathodic vacuum arc (FCVA) deposition system and by varying the negative substrate bias voltage, deposition time, and nitrogen flow rate. Thermal treatment on DLC films was performed using a rapid thermal annealing (RTA) process at $600^{\circ}C$ for 2min. Raman spectroscopy, x-ray photoemission spectroscopy (XPS), atomic force microscope (AFM), and surface profiler were used to characterize the I$_{D}$I$_{G}$ intensity ratio, sp$^3$ hybrid carbon fraction, internal stress, and surface roughness. It was found for all the deposited DLC films that the RTA-treatment results in the release of internal compressive stress, while at the same time it leds to the decrease of sp$^3$ fraction and the increase of I$_{D}$I$_{G}$ intensity ratio. It was also suggested that the thermal treatment effect on the structural property of DLC films strongly depends on the diamond-like nature (i.e., sp$^3$ fraction) of as-deposited film.ed film.

몬테카를로 시뮬레이션을 통한 Csl-Se 검출기의 구조 설계 (Structure design of Csl-Se Detector using Monte Carlo Simulation)

  • 박지군;강상식;최장용;이형원;남상희
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2002년도 추계학술대회 논문집 Vol.15
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    • pp.420-423
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    • 2002
  • In recent years, there has been keen interest in developing f1at panel detectors for all modalities of radiology, including gerneral radiology, fluoroscopy(angiography and cardiology), electronic portal imaging, and mammography. In this paper, we report the new hybrid x-ray detector consisted of CsI(Tl) photoemission layer and a-Se photoconductor layer to resolve conventional x-ray detector such as the direct detector using a-Se and the indirect detector using CsI(Tl)/a-Si. To design the structure of CsI(Tl)/a-Se detector, the penetrated energy spectrum and absorption fraction was estimated using MCNP 4C code. Experimental results showed that the absorption fraction of $500{\mu}m-Se$ film and $150{\mu}m-CsI\left(Tl \right)/a-Se\left( 30{\mu}m \right)$ film is 70% at 70 kVp. The absorption energy is 90% at $350{\mu}m-CsI(Tl)$.

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Fabrication and Crystallization Behavior of BNN Thin Films by H-MOD Process

  • Lou, Junhui;Lee, Dong-Gun;Lee, Hee-Young;Lee, Joon-Hyung;Cho, Sang-Hee
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2003년도 제5회 영호남 학술대회 논문집
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    • pp.98-102
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    • 2003
  • $Ba_2NaNb_5O_{15}$, hereafter BNN, thin films are attractive candidates for nonvolatile memory and electro-optic devices. In the present work, thin films that have different contents of Ba, Na and Nb have been prepared by H-MOD technique on silicon and Pt substrates. XRD and SEM were used to investigate the phase evolution behavior and the microstructure of the films. It was found that the films of about 450nm thick were crack-free and uniform in microstructure. Nb content strongly influenced the phase formation of the films, where low temperature phase was always formed at the stoichiometric BNN composition. However, the amount of low temperature phase decreased with the increase of excess Nb content, and the single phase (orthorhombic tungsten bronze structure) BNN thin film was obtained at the temperature as low as $750^{\circ}C$ for samples with excess niobium. From this study, the sub-solidus phase diagram below $850^{\circ}C$ for $BaO-Na_2O-Nb_2O_5$ ternary system is proposed.

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혼성집적회로 기술에 의한 음악 전단증폭기의 설계와 제작 (Design & Fabrication of Audio Preamplifier Using Thick film Hybrid Technology)

  • 정선호;정헌생
    • 대한전자공학회논문지
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    • 제8권5호
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    • pp.10-19
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    • 1971
  • 음성 전단증폭기를 후막집적회로기술을 이용하여 집적회로화하는데에 파생되는 여러가지 기술적인 문제를 실제로 연구개발을 실시한 경험을 토대로 소개하였다. 특히 전자계산기를 이용한 회로해석을 통하여 전단증폭기의 성능을 가장 민감하게 좌우하는 저항소자를 찾아 내므로써 크기의 아루미나 기판상에 집적된 7개의 저항중에서 한개만을 조정하여도 원하는 주파수특성을 얻을 수 있음을 확인하였다. 이로써 7개의 저항을 설계치에 맞게 각각 조정하는 작업을 하지 않고 그 중 하나만을 원하는 특성이 나타날때까지 조정하는 기능조정방법을 찾아내어 조정작업에 소요되는 인건비를 1/7로 절감할 수 있도록 하였다. 이 외에도 저항체와 도체간의 접촉문제라든가, 크로쓰오바의 기생용량문계 또는 저항조정방법에 따르는 잡음도의 변화문제에 대해서도 상세히 다루었다.

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BTMSM/O2 유량변화에 따른 SiOCH 박막의 저유전 특성 (Properties of SiOCH Thin Film Lour Dielectric by BTMSM/O2 Flow Rates)

  • 박인철;김홍배
    • 한국전기전자재료학회논문지
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    • 제22권2호
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    • pp.132-136
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    • 2009
  • SiOC thin film of hybrid-type that is the limelight as low dielectric material of next generation were deposited by plasma enhanced chemical vapor deposition (PECVD) method with bistrimethylsilylmethane (BTMSM) precursor increased by 2 sccms from 24 sccms to 32 sccm. Manufactured samples are analyzed components by measuring FT/IR absorption lines. It is a tendency that seems to be growing of Si-O-Si(C) bonding group and narrowing of Si-O-$CH_3$ bonding group relative to the increasing flow-rate BTMSM. The chemical shift in the XPS analysis was shown in the specimens between the BTMSM=26 sccm and BTMSM = 28 sccm. The binding energy of Si 2p, C 1s and O 1s electron orbit spectra was the low-est at the specimen of the BTMSM=26 sccm. From the results of electrical Properties using the 1 MHz C - V measurements, the dielectric constant was 2.32 at the specimen with the BTMSM = 26 sccm.

실크/PLGA 하이브리드 필름에서 실크가 인간 대동맥 내피세포의 부착과 증식에 미치는 효과 (Effect of Silk in Silk/PLGA Hybrid Films on Attachment and Proliferation of Human Aortic Endothelial Cells)

  • 이지혜;이소진;김슬지;김경희;김영래;송정은;이동원;강길선
    • 폴리머
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    • 제37권2호
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    • pp.127-134
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    • 2013
  • 혈관내피세포는 혈관 안쪽을 덮고 있는 편평한 세포층으로, 혈관의 기능과 혈관평활근세포의 증식을 조절한다. 폴리락타이드글리콜라이드 공중합체(PLGA)는 물성이 좋고 분해속도를 조절하기 좋은 생분해성 합성고분자이며, 여러 형태로 제조하기 쉽다. 누에에서 얻은 실크 피브로인은 18가지 아미노산으로 구성되어 있고 세포의 부착과 세포 기능 유지에 중요하며 화장품, 의료분야 등 다양한 분야에서 응용되고 있다. 본 연구에서는 용매 증발법을 이용하여 0, 10, 20, 40 및 80 wt%의 실크를 이용하여 실크/PLGA 하이브리드 필름을 만들었으며, MTT, SEM, ELISA, 면역세포화학염색법을 실시하였다. 실크/PLGA 하이브리드 필름에서 실크 함량에 따른 인간 대동맥 내피세포의 부착과 증식을 측정한 결과, 40 wt%의 실크/PLGA 하이브리드 필름에서 세포의 부착과 증식이 가장 높았으며, 이런 결과들은 실크가 세포의 증식에 좋은 영향을 미치고 실크/PLGA 하이브리드 필름의 표면이 인간 대동맥 내피세포의 성장에 알맞은 환경이라는 것을 확인할 수 있었다.

하이브리드 개념을 통한 '관객 참여형 연극'의 확장된 혼종성 연구 - 연극《내게 빛나는 모든 것》을 중심으로 - (An Inquiry Into an Expanded Hybridity in 'Audience Participation Theatre' Through the Concept of Hybrid - Focused on 《Every Brilliant Thing》-)

  • 전순열
    • 한국엔터테인먼트산업학회논문지
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    • 제15권4호
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    • pp.113-125
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    • 2021
  • 이 연구는 21세기 이후 새롭게 대두되고 있는 하이브리드의 개념을 연극 공간으로 적용하여 특별히 관객이 적극적으로 극에 개입하고 참여하는 '관객 참여형 연극'에 관한 새로운 접근을 시도해 보는 것에 목적을 두었다. 사실, '하이브리드'는 이미 오랜 시간 인류의 문화 형성과 전승 가운데 주요한 동력을 제공해 왔으며 이를 무대 위로 다루는 연극에서 또한 그 혼종성은 의미 있는 원리로 작용해 왔다. 이전의 극장과 텍스트 중심의 전통적인 연극에서는 '현존과 부재', '현실과 허구' 그리고 '즉자와 대자'의 측면에서 그 혼종성이 오직 무대 위의 한정적 움직임으로 제한된 바 있다. 하지만 20세기 아방가르드 이후 '해체'의 정신을 바탕으로 객석과 무대 사이의 경계가 무너지고 그 사이에서 하이브리드는 이전의 '무대 한정적 하이브리드'에서 '무대를 넘어 객석을 포함하는 연극 공간 전체'의 하이브리드로 확장되기에 이른다. 다시 말해, 객석과 관객은 이제 동등한 연극적 요소로서 다른 요소들과 동등한 수평적 연결 구조를 통해 함께 뒤섞이게 되었으며 이를 바탕으로 이전과는 전혀 다른 새로운 결과물이 형성되는 것이다. 따라서, 관객 참여형 연극은 이전의 전통적인 연극 공간 안에서 가장 이질적인 '객석과 무대', '관객과 배우' 사이의 일종의 하이브리드 현상으로 '혼종화된 관객', '혼종화된 공간' 그리고 '혼종화된 텍스트'라는 독특한 정체성으로 또 다른 접근이 가능할 것이다.

Electrical Properties of Eco-Friendly RuO2-Based Thick-Film Resistors Containing CaO-ZnO-B2O3-Al2O3-SiO2 계 유리가 적용된 질화알루미늄 기판용 RuO2계 친환경 후막저항의 전기적 특성 연구 (Electrical Properties of Eco-Friendly RuO2-Based Thick-Film Resistors Containing CaO-ZnO-B2O3-Al2O3-SiO2 System Glass for AlN Substrate)

  • 김민식;김형준;김형태;김동진;김영도;류성수
    • 한국세라믹학회지
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    • 제47권5호
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    • pp.467-473
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    • 2010
  • The objective of this study is to prepare lead-free thick film resistor (TFR) paste compatible with AlN substrate for hybrid microelectronics. For this purpose, CaO-ZnO-$B_2O_3-Al_2O_3-SiO_2$ glass system was chosen as a sintering aid of $RuO_2$. The effects of the weight ratio of CaO to ZnO in glass composition, the glass content and the sintering temperature on the electrical properties of TFR were investigated. $RuO_2$ as a conductive and glass powder were dispersed in an organic binder to obtain printable paste and then thick-film was formed by screen printing, followed by sintering at the range between $750^{\circ}C$ and $900^{\circ}C$ for 10 min with a heating rate of $50^{\circ}C$/min in an ambient atmosphere. The addition of ZnO to glass composition and sintering at higher temperature resulted in increasing sheet resistance and decreasing temperature coefficient of resistance. Using $RuO_2$-based resistor paste containing 40 wt%glass of CaO-20.5%ZnO-25%$B_2O_3$-7%$Al_2O_3$-15%$SiO_2$ composition, it is possible to produce thick film resistor on AlN substrate with sheet resistance of $10.6\Omega/\spuare$ and the temperature coefficient of resistance of 702ppm/$^{\circ}C$ after sintering at $850^{\circ}C$.

VENGEANCE, VIOLENCE, VAMPIRES: Dark Humour in the Films of Park Chan-wook

  • Hughes, Jessica
    • 비교문화연구
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    • 제28권
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    • pp.17-36
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    • 2012
  • This essay places the South Korean film Thirst (2009) within Park Chan-wook's oeuvre as a filmmaker notorious for graphic depictions of violence and revenge. Park's use of dark humour in his films, which is emphasized in Thirst perhaps more than ever, allows for a more self-aware depiction of violence, where both the viewer and the protagonist are awakened to the futility of revenge. This ultimately paints his characters as fascinatingly crazy - simultaneously heroes, villains, and victims. Film theorist Wes D. Gehring's three themes of dark humour ('man as beast,' 'the absurdity of the world,' and 'the omnipresence of death') become most obvious in Park's most recent film, which pays closer attention to character development through narrative detail. Rather than portraying the characters as sentimental, dark humour depicts their misfortunes in an alternative way, allowing for consideration of such taboo subjects as religion, adultery, and death/suicide. These issues are further tackled through Thirst's portrayal of its vampire protagonist, which ultimately de-mystifies the traditional vampire figure. While this character has more often been associated with romance, exoticism and the mystical powers of the supernatural, Thirst takes relatively little from the demons of Nosferatu (Murnau, 1922) and various other Dracula adaptations, nor the romantic figures of Interview with the Vampire (Jordan, 1994), and Twilight (Hardwicke, 2008). Instead, it is part of a much smaller group of contemporary vampire films, which are rather informed by a postmodern reconfiguration of the monster. Thus, this paper examines Thirst as an important contribution to the global and hybrid nature of those films in which postmodern vampires are sympathetic and de-mystified, exhibiting symptoms stemming from a natural illness or misfortune. Park's undertaking of a vampire film allows for a complex balance between narrative and visuals through his focus on the Western implications of this myth within Korean cinema. This combination of international references and traditional Korean culture marks it as highly conscious of New Korean Cinema's focus on globalization. With Thirst, Park successfully unites familiar images of the vampire hunting and feeding, with more stylistically distinct, grotesque images of violence and revenge. In this sense, dark humour highlights the less charming aspects of the vampire struggling to survive, most effective in scenes depicting the protagonist feeding from his friend's IV in the hospital, and sitting in the sunlight, slowly turning to ash, in the final minutes of the film. The international appeal of Park's style, combining conventions of the horror/thriller genre with his own mixture of dark humour and non-linear narrative, is epitomized in Thirst, which underscores South Korea's growing global interest with its overt international framework. Furthermore, he portrayal of the vampire as a sympathetic figure allows for a shift away from the conventional focus on myth and the exotic, toward a renewed construction of the vampire in terms of its contribution to generic hybridization and cultural adaptation.