• Title/Summary/Keyword: Nano-bio technology

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A 0.55" PDLC-LCoS Micro-display for Mobile Projectors

  • Do, Yun-Seon;Yang, Kee-Jeong;Sung, Shi-Joon;Kim, Jung-Ho;Lee, Gwang-Jun;Lee, Yong-Hwan;Chung, Hoon-Ju;Roh, Chang-Gu;Choi, Byeong-Dae
    • 한국정보디스플레이학회:학술대회논문집
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    • 2009.10a
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    • pp.1527-1530
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    • 2009
  • A LCoS micro-display using polymer dispersed liquid crystals (PDLCs) for light switching layer was fabricated. The Si backplane of SVGA ($800{\times}600$) with a pixel size of $14{\times}14mm^2$ was prepared by a $0.35{\mu}m$ 18V CMOS process. PDLCs were filled in the gap between backplane and ITO glass by conventional vacuum filling method. The prepared panels were driven by a field sequential color (FSC) scheme at the frequency of 180Hz and were successful in modulating LED lights to show projection images. The preparation and performance of PDLC-LCoS are presented.

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Schottky Barrier MOSFETs with High Current Drivability for Nano-regime Applications

  • Jang, Moon-Gyu;Kim, Yark-Yeon;Jun, Myung-Sim;Choi, Chel-Jong;Kim, Tae-Youb;Park, Byoung-Chul;Lee, Seong-Jae
    • JSTS:Journal of Semiconductor Technology and Science
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    • v.6 no.1
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    • pp.10-15
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    • 2006
  • Various sizes of erbium/platinum silicided n/p-type Schottky barrier metal-oxide-semiconductor field effect transistors (SB-MOSFETs) are manufactured from $20{\mu}m$ to 10nm. The manufactured SB-MOSFETs show excellent DIBL and subthreshold swing characteristics due to the existence of Schottky barrier between source and channel. It is found that the minimization of trap density between silicide and silicon interface and the reduction of the underlap resistance are the key factors for the improvement of short channel characteristics. The manufactured 10 nm n-type SBMOSFET showed $550{\mu}A/um$ saturation current at $V_{GS}-V_T$ = $V_{DS}$ = 2V condition ($T_{ox}$ = 5nm) with excellent short channel characteristics, which is the highest current level compared with reported data.

Gas Permeation Properties of Brominated Polysulfone Membranes (브롬화된 Polysulfone막에 의한 기체 투과 특성에 관한 연구)

  • Rhim, Ji-Won;Lee, Bo-Sung;Kim, Tae-Young;Kim, Dae-Hoon;Lee, Byung-Sung;Yoon, Seok-Won;Im, Hyeon-Soo
    • Membrane Journal
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    • v.19 no.2
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    • pp.150-156
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    • 2009
  • To improve the permselective efficiency of polysulfone membranes, the bromination was performed and then the resulting membranes were investigated in terms of membrane structures and gas transport characteristics. The brominated Polysulfone membranes were characterized by FT-IR, 1H-NMR, TGA, contact angle measurements, and gas permeation measurements were accomplished with He, $N_2,\;CO_2\;and\;O_2$. In general, the permeation rates were reduced while the selectivities increased as the bromination progressed.

Studies on the Preparation of Anion Exchange Membrane through Blending of the Poly(ethylenimine) and the Poly(vinyl alcohol) (폴리비닐알코올과 폴리에틸렌이민과의 혼합을 통한 음이온교환막의 제조 연구)

  • Kim, Sung-Pyo;Kim, Baek-Kyun;Lee, Hak-Min;Rhim, Ji-Won;Jeong, Sung-Il
    • Membrane Journal
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    • v.20 no.4
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    • pp.335-341
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    • 2010
  • This study focuses on the investigation of the anion exchange membrane through blending poly(ethylenimine) (PEI) and poly(vinyl alcohol) (PVA) varying the mixing ratio. To characterize the resulting membranes, the water content, contact angle, FT-IR, thermal gravimetric analysis, ion exchange capacity, ion conductivity and elastic modulus were measured. The PVA / PEI = 90 / 10 membrane showed the ion conductivity, $5.16{\times}10^{-2}S/cm$ and simultaneously the contact angle, $78.3^{\circ}$. According to TGA measurement, the resulting membranes seemed durable at room temperature. Through the modulus test, the mechanical properties increased with increasing PVA content and apparently the membranes looked very robust.