• 제목/요약/키워드: molecular electronics

검색결과 265건 처리시간 0.03초

분자 Electronics

  • 권영수;강도열
    • 전기의세계
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    • 제37권9호
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    • pp.26-31
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    • 1988
  • 본 해설에서는 최근 화제가 되고 있는 분자electronics(Molecular Device, Molecular Element, Molecular Electronics Devices)의 연구동향에 관하여 소개하기로 한다.

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Synthesis and Characterization of DNA-Templated Nanostructures: Toward Molecular Electronics

  • 이정규
    • 한국진공학회:학술대회논문집
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    • 한국진공학회 2013년도 제45회 하계 정기학술대회 초록집
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    • pp.92.1-92.1
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    • 2013
  • Molecular electronics has been the subject of intese research for many years because of the fundamental interest in molecular charge transport and potential applications, such as (bio)nanosensors and molecular memory devices. Molecular electronics requires a method for making reliable eletrical contacts to singlemolecules. To date, several approaches have been reported: scanning-probe microscopy, mechanical break junctions, nano patterning, and direct deposition of electrode on a self-assembled monolayers. However, most methods are laborious and difficult for large-scale application and more importantly, cannot control the number of moleucles in the junction. Recently, DNA has been used as a template for metallic nanostructures (e.g., Ag, Pd, and Au nanowires) through DNA metallization process. Furthermore, oligodeoxynucleotides have been tethered to organic molecules by using conventional organic reactions. Collectively, these techniques should provide an efficient route toward reliable and reproducible molecular electronic devices with large-scale fabrication. Therefore, I will present a paradigm for the fabrication of moleuclar electronic devices by using micrometer-sized DNA-singe organic molecule and DNA triblock structures.

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Effusion Cell 방식에 의한 <111> 결정구조의 Au 박막의 제작 (Au Thin Film Fabrication of <111> Crystal Structure by Effusion Cell Process)

  • 표경수;김강대;김용규;송정근
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2004년도 하계종합학술대회 논문집(2)
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    • pp.383-386
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    • 2004
  • The one of important requisites for fabricating molecular electronic device is the single crystal direction of bottom substrate nowadays. [1,2]. We obtain the optimum SAM result when the Au crystal is <111> structure for Self-Assembled molecular. To get the <111> crystal Au, we generally repeat heating and cooling course after evaporating Au [3]. However, we can fabricate <111> crystal Av thin film except post treatment because we simultaneously evaporate and anneal using Effusion Cell. In this paper, we study on thin film growth of <111> crystal Au as bottom electrode which is essential for Self-Assembled molecular by Effusion Cell and analyze crystal structure, thickness, surface conductivity and so on as each process condition.

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스텁을 갖는 PBG 셀로 구현한 마이크로스트립 PBG 구조 및 듀플렉서 (Design of Microstrip PBG structure and Duplexer using PBG Cell with Stub)

  • 장미영;기철식;박익모;임한조;김태일;이정일
    • 대한전자공학회논문지TC
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    • 제38권12호
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    • pp.39-48
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    • 2001
  • 본 논문에서는 마이크로스트립 라인에 포토닉 밴드갭(photonic bandgap: PBG) 구조를 구현할 경우 저지대역 내에 형성되는 통과대역의 부분대역폭(fractional bandwidth)을 효과적으로 조절할 수 있는 PBG 구조의 설계에 관하여 연구하였다. 이 구조는 결함을 갖는 통상적 PSG 구조의 기본 PSG 셀(cell)에 스텁(stub)을 더하여 구현한 것으로 PBG 셀에 첨가된 스텁 길이가 증가함에 따라 스컷(skirt) 특성이 현저하게 개선됨을 볼 수 있었다. 이때 차단주파수(cutoff- frequency), 저지대역 및 통과대역의 중심주피수는 저주파 쪽으로 이동하였고 통과대역폭은 감소하였다. 이러한 결과는 PBG 셀에 스텁을 활용함으로써 저지대역 내에 형성되는 통과대역의 부분대역폭을 효과적으로 조절할 수 있음을 보여준다. 또한 스텁을 갖는 PBG 구조를 응용하여 우수한 스컷 특성을 갖는 듀플렉서를 설계할 수 있음도 보였다.

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Organic Polymer Light-Emitting Devices on a Flexible Plastic Substrate

  • Kanicki, Jerzy;Lee, Shu-Jen;Hong, Yong-Taek;Su, Chia-Chen
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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    • pp.91-94
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    • 2004
  • We report on the opto-electronic properties of red, green, and blue poly (fluorene) co-polymer light-emitting devices (PLEDs) fabricated on a flexible plastic substrate. The plastic substrate used has a multi-layer structure with water vapor and oxygen transmission rates of less than $10^{-5}$ g/$cm^2$-day-atm and $10^{-7}$ cc/$cm^2$-day-atm, respectively. We obtained a wide range of color gamut and a maximum emission efficiency of 0.7, 10, and 1.7 cd/A for red, green, and blue PLEDs, respectively. Finally, a simple equivalent circuit model is proposed to simulate PLED current density-voltage characteristics.

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Quantum Chemical Studies for the Structure-Property Relationships of the Fluoro-isothiocyanated Nematic Liquid Crystal Materials

  • Joo, Young-Dae;No, K.T.;Seong, See-Yearl;Kim, Y.B.;Ban, Byeong-Seob;Lee, K.J.;Souk, J.H.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2003년도 International Meeting on Information Display
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    • pp.486-488
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    • 2003
  • Some important properties of the liquid crystal molecules containing fluoro-isothiocyanated molecules have been studied using quantum chemical calculations and the results were correlated with respect to the structure of the molecules. Dielectric anisotropy, birefringence have been predicted for several unknown structures. The Maier-Meier, Vuks equation were used for the dielectric anisotropy and birefringence calculation. The results obtained by empirical approximation showed a good agreement with experiment ones.

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