• 제목/요약/키워드: Copper Film

검색결과 563건 처리시간 0.023초

Voltammetric Studies of Cu-Adriblastina Complex and its Effect on ssDNA-Adriblastina Interaction at In Situ Mercury Film Electrode

  • D.Abd El Hady;M.Ibrahim Abdel Hamid;M.Mahmoud Sellem;N.Abo E Maali
    • Archives of Pharmacal Research
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    • 제27권11호
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    • pp.1161-1167
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    • 2004
  • Adriblastina, a cancerostatic anthracycline antibiotic, causes considerable oxidative damage to DNA molecules. The interaction of this compound with DNA was investigated using Osteryoung square wave stripping voltammetry (OSWSV) and cyclic voltammetry (CV) at an in situ mercury film electrode. It was found that the equilibrium constant of the bonded oxidized form of the drug was 63 times bigger more important than that of the bonded reduced form. Copper forms 1 metal: 2 drug stoichiometry complex which is highly stable compared to ssDNA-drug interaction and consequently inhibited the drug biochemical damaging effects. Copper complex offered sub-nanogram determination of adriblastina in aqueous and urine media.

Octa(2-ethylhexyloxy)copper-phthalocyanine LB막의 $NO_2$ 가스 탐지 특성에 관한연구 (A study on the $NO_2$ Gas Detection Characteristics of Octa(2-ethylhexyloxy)copper-phthalocyanine LB Films)

  • 임준석;김영관;김정수
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1996년도 하계학술대회 논문집 C
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    • pp.1716-1718
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    • 1996
  • It is well known that the metallophthalocyanine (MPcs) are sensitive to toxic gaseous molecules such as $NO_2$ and also chemically and thermally stable. Therefore, lots of MPcs are studied for the potential chemical sensor for $NO_2$ gas using quartz crystal microbalance(QCM) or electrical conductivity. In this study, thin films of octa(2-ethylhexyloxy) copper-phthalocyanine were prepared by Langmuir-Blodgett method and characterized by using UV-VIS spectrascopy and ellipsometry. Transfer condition, film characterization, and preliminary results of current-voltage(I-V) characteristics of these films exposed to $NO_2$ gas as a function of film thickness will be discussed.

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Octa(2-ethylhexyloxy)copper-phnthalocyanine LB막의 NO$_2$ 가스 탐지 특성에 관한 연구 (A study on the NO$_2$ Gas Detection Characteristics of Octa(2-ethylhexyloxy)copper-phthalocyanine LB films)

  • 임준석;김영관;김정수
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1996년도 춘계학술대회 논문집
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    • pp.162-165
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    • 1996
  • It is well shown that the metallophthalocyanine (MPcs) are sensitive to tonic gaseous molecules such as NO$_2$ and also chemically and thermally stable. Therefore, lots of MPcs are studied for the potential chemical sensor for NO$_2$ gas using quartz crystal microbalance(QCM) or electrical conductivity. In this study, thin films of octa(2-ethylhexyloxy) copper-phthalocyaninc ware prepared by Langmuir-Blodgett method and characterized by using UV-VIS spectrascopy and cllipsometry. Transfer condition, film characterization, and preliminary results of current-voltage(I-V) characteristics of these films exposed to NO$_2$ gas as a function of film thickness will be discusscd.

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무전해 구리 도금액에서 착화제가 접합력에 미치는 영향에 대한 고찰 (Effect of Complexing Agents on Adhesion Strength between Electroless Copper Film and Ta Diffusion Barrier)

  • 이창면;전준미;허진영;이홍기
    • 한국표면공학회지
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    • 제47권4호
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    • pp.162-167
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    • 2014
  • The primary purpose of this research is to investigate how much the complexing agent in electroless Cu electrolytes will affect adhesion strength between copper film and Ta diffusion barrier for Cu interconnect of semiconductor. The adhesion strength using rochelle's salt as complexing agent was higher than the case of using EDTA-4Na. Effect of complexing agent on adhesion strength and electrical resistivity was studied in crystal structural point of view.

Octa (2-ethyls expel oxy) copper-phthalocyanine LB막의 NO$_2$가스 탐지 특성에 관한 연구 (A study on the NO$_2$Gas Detection chracteristics of the Octa (2-ethylhexyloxy) copper-phthalocyanine LB film)

  • 임준석;김영관;김정수
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1996년도 추계학술대회 논문집
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    • pp.121-124
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    • 1996
  • It is well known that the metallo- phthalocyanine (MPcs) are sensitive to toxic gaseous molecules such as NO$_2$and also chemically and thermally stable. Therefore, lots of MPcs have been studied for the potential chemical sensor for NO$_2$gas using quartz crystal microbalance(QCM) or electrical conductivity. In this study, thin films of octa(2-ethylhexyloxy) copper-phthalocyanine were prepared by Langmuir -Blodgett method and characterized by using UV-VIS spectroscopy and ellipsometry. Transfer condition, and characterization of LB films were investigated and preliminary results of current-voltage(I-V) characteristics of these films exposed to NO$_2$gas as a function of film thickness, temperature and temperature were discussed.

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LB법에 의한 Copper-tetra-tert-butylphthalocyanine (CuTBP)의 막 제작과 NO$_2$가스 탐지 특성에 관한 연구 (The NO$_2$Gas Detection Characteristics of Langmuir-Blodegett Films layered with Copper-tetra-tert-butylphthalocyanine(CuTBP))

  • 김형석;유병호;조형근;이창희;김정수
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1994년도 춘계학술대회 논문집
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    • pp.79-82
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    • 1994
  • We have manufacture Copper-tetra-tert-butylphalocyanine (CuTBP)Langmuir-Blodgett(LB) films, which is known be sensitive to NO$_2$ gab. A response of these films to the NO$_2$ gab was studied. A surface pleasure of 25mN/m was obtained as a proper one for a film deposition. A deposited film status was identified with Uv/visible absorption spectra, ellipsometry measurements, and current-voltage(I-Y) characteristics. The NO$_2$ gas response experiments under 200ppm conducentration show that there are increment of electrical conductivity by 12 times, 5 seconds of response time, and 5 seconds of response time, and 90 seconds of recovery time.

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두께와 온도에 따른 Octa(2-ethylhexyloxy) Copper-phthalocyanine LB막의 $NO_2$ 가스 탐지 특성에 관한 연구 (A Study on the $NO_2$ Gas Detection Chracteristics of the Octa(2-ethylhexyloxy) Copper-Phthalocyanine LB Film Depending on the Film Thickness and Temperature)

  • 임준석;신현만;김영관;김정수;손병청
    • 한국응용과학기술학회지
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    • 제13권3호
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    • pp.105-109
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    • 1996
  • It is well known that the metallo- phthalocyanine (MPcs) are sensitive to toxic gaseous molecules such as $NO_2$ and also chemically and thermally stable, Therefore, lots of MPcs have been studied for the potential chemical sensor for $NO_2$ gas using quartz crystal microbalance(QCM) or electrical conductivity. In this study, ultra-thin films of octa(2-ethylhexyloxy)copper-phthalocyanine were prepared by Langmuir-Blodgett method and characterized by using UV-VIS absortion spectroscopy and ellipsometry. Transfer condition, and characterization of LB films were investigated and preliminary results of current-voltage(I-V) characteristics of these films exposed to $NO_2$ gas as a function of film thickness and temperature were discussed.

LCD Driver IC Assembly Technologies & Status

  • Shen, Geng-shin
    • 한국마이크로전자및패키징학회:학술대회논문집
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    • 한국마이크로전자및패키징학회 2002년도 International Symposium
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    • pp.21-30
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    • 2002
  • According the difference of flex substrate, (reel tape), there are three kind assembly types of LCD driver IC is COG, TCP and COF, respectively. The TCP is the maturest in these types for stability of raw material supply and other specification. And TCP is the major assembly type of LCD driver IC and the huge demand from Taiwan's large TFT LCD panel house since this spring. But due to its package structure and the raw material applied in this package, there is some limitation in fine pitch application of this package type, (TCP). So, COF will be very potential in compact and portable application comparison with TCP in the future. There are three kinds assembly methods in COF, one is ACF by using the anisotropic conductive film to connect the copper lead of tape and gold bump of IC, another is eutectic bonding by using the thermo-pressure to joint the copper lead of tape and gold bump of IC, and last is NCP by using non-conductive paste to adhere the copper lead of tape and gold bump of IC. To have a global realization, this paper will briefly review the status of Taiwan's large TFT panel house, the internal driver IC design house, and the back-end assembly house in the beginning. The different material property of raw material, PI tape is also compared in the paper. The more detail of three kinds of COF assembly method will be described and compared in this paper.

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EMI 스프레이 코팅막의 차폐효과를 측정하기 위한 정확한 방법 (An Accurate Method to measure Shielding Effectiveness of EMI Spray Coating Film)

  • 허정;이원희
    • 한국인터넷방송통신학회논문지
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    • 제18권4호
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    • pp.79-83
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    • 2018
  • EMI 스프레이 코팅막의 차폐효과(Shield Effectiveness, SE)를 측정하기 위한 정확한 방법을 제안하였다. 고주파 시뮬레이션을 한 후에 원형 동축 표준 측정기를 제작하였다. 원형 동축 표준 측정기에 삽입하기 위하여 EMI 스프레이 코팅막의 시료를 가공하였다. 차폐효과 측정을 위한 측정기는 에이질런트 8722ES 벡터 네트워크 분석기를 이용하였다. 이러한 측정기와 측정시료의 구성으로 구리와 은의 혼합 스프레이 코팅 시료의 정확한 차폐효과를 측정하였다. 동박 시료의 차폐효과는 70 dB로 측정되었고, 구리와 은의 혼합 스프레이 코팅 시료의 차폐효과는 60 dB로 측정되었다. 이와 같은 측정 결과로 원형 동축 표준 측정기의 신뢰성을 확인하였다.

Electrical Properties of F16CuPC Single Layer FET and F16CuPc/CuPc Double Layer FET

  • Lee, Ho-Shik;Park, Yong-Pil;Cheon, Min-Woo
    • Transactions on Electrical and Electronic Materials
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    • 제8권4호
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    • pp.174-177
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    • 2007
  • We fabricated organic field-effect transistors (OFETs) based a fluorinated copper phthalocyanine ($F_{16}CuPC$) and copper phthalocyanine (CuPc) as an active layer. And we observed the surface morphology of the $F_{16}CuPC$ thin film. The $F_{16}CuPC$ thin film thickness was 40 nm, and the channel length was $50{\mu}m$, channel width was 3 mm. And we also fabricated the $F_{16}CuPc/CuPc$ double layer FET and with different $F_{16}CuPc$ film thickness devices. We observed the typical current-voltage (I-V) characteristics and capacitance-voltage (C-V) in $F_{16}CuPc$ FET and we calculated the effective mobility. From the double layer FET devices, we observed the higher drain current more than single layer FET devices.