• Title/Summary/Keyword: bilayer

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Antireflective ZTO/Ag bilayer-based transparent source and drain electrodes for highly transparent thin film transistors

  • Choe, Gwang-Hyeok;Kim, Han-Gi
    • Proceedings of the Materials Research Society of Korea Conference
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    • 2012.05a
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    • pp.110.2-110.2
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    • 2012

  • We reported on antireflective ZnSnO (ZTO)/Ag bilayer and ZTO/Ag/ZTO trilayer source/drain (S/D) electrodes for all-transparent ZTO channel based thin film transistors (TFTs). The ZTO/Ag bilayer is more transparent (83.71%) and effective source/drain (S/D) electrodes for the ZTO channel/Al2O3 gate dielectric/ITO gate electrode/glass structure than ZTO/Ag/ZTO trilayer because the bottom ZTO layer in the trilayer increasea contact resistance between S/D electrodes and ZTO channel layer and reduce the antireflection effect. The ZTO based all-transparent TFTs with ZTO/Ag bilayer S/D electrode showed a saturation mobility of 4.54cm2/Vs and switching property (1.31V/decade) comparable to TTFT with Ag S/D electrodes.

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A Study on the Silicidation of Thick Co/Ti Bilayer (두꺼운 이중층 Co/Ti 막의 실리사이드화에 관한 연구)

  • 이병욱;권영재;이종무;김영욱
    • Journal of the Korean Ceramic Society
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    • v.33 no.9
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    • pp.1012-1018
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    • 1996

  • To investigate the final structures and reactions of silicides a somewhat thick Ti monolayer Co monolayer and Co/Ti bilayer films were deposited on single Si(100) wafer by electron beam evaporation followed by heat treatment using RTA system in N2 ambient. TiO2 film formed between Ti and TiSi2 layers due to oxgen or moisture in the Ti monolayer sample. The final layer structure obtained after the silicidation heat-treatment of the Co/Ti bilayer sample turned out to be TiSi2/CoSi2/Ti-Co-Si alloy/CoSi2/Si sbustrate. This implies that imperfect layer inversion occurred due to the formation of Ti-Co-Si intermediate phase.

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Coordinatively Polymerized Bilayer Membranes Prepared with an Amphiphilic Derivative of 2-Thiazolyazophenol in Water

  • 서정훈;신승훈;심현보
    • Bulletin of the Korean Chemical Society
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    • v.18 no.2
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    • pp.190-193
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    • 1997

  • In search of new amphiphiles that form coordinatively polymerized bilayer membranes (CPBMs) in water, N-dodecyl-3-[2-hydroxy-3-(4-carboxymethyl-2-thiazolylazo)-5-methylphenyl]propanamide (5) was prepared. The bilayer membranes of 5 prepared in the presence of 2 equivalents of NaOH were further sonicated in the presence of transition metal ions such as Ni(Ⅱ), Cu(Ⅱ), Co(Ⅱ), or Co(Ⅲ) at > 80 ℃ to obtain CPBMs. The CPBMs of 5 were characterized by transmission electron microscopy, gel filtration, resistivity against disruption in aqueous ethanol, visible spectra, and release of entrapped 5(6)-carboxyfluorescein. Remarkable stabilization of the bilayer membranes through coordinative polymerization was evidenced by the resistivity of the Ni(Ⅱ)-CPBM of 5 against disruption in 40%(v/v) ethanol upon incubation for 20 hr.

  • https://doi.org/10.5012/bkcs.1997.18.2.190 인용 PDF

The Effects of Physical States of Phospholipids on $Ca^{2+}$-ATPase Activity of Biological Membranes (지질의 물리학적 성상이 $Ca^{2+}$-ATPase 활성도에 미치는 영향)

  • Hah, Jong-Sik
    • The Korean Journal of Physiology
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    • v.22 no.2
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    • pp.163-177
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    • 1988

  • The $Ca^{2+}-ATPase$ of sarcoplasmic reticulum (SR) was solubilized and reconstituted into a mixture of phosphatidylcholine (PC) and phosphatidylethanolamine (PE) of varying ratios in order to assess the effect of physical states of phospholipids on the incorporation and functions $Ca^{2+}-ATPase$. On the basis of the spectral data of Ca-arsenazo III, the $Ca^{2+}$ uptake of SR was increased linearly as the PC content increased in the reconstituted vesicles. The ATP hydrolysis activity also increased as PC content increased up to 25% and then decreased slightly as the PC content further increased. On the other hand the incorporation of $Ca^{2+}-ATPase$ into the reconstituted vesicls occured maximally at 25% PC and 75% PE mixture which is known to have a non-bilayer structure in reconstitution system. From the above results it is clear that preexisting defects in the lipid bilayer promote protein incorporation into the bilayer during reconstitution and lamellar structure of the bilayer facilitates the $Ca^{2+}-ATPase$ function.

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