• Title/Summary/Keyword: chemical materials

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Printability of synthesized Silver Nano sol in Micro-patterning of Electrode on ITO Glass

  • Ryu, Beyong-Hwan;Park, Han-Sung;Byun, Jong-Hoon;Choi, Young-Min;Kong, Ki-Jeong;Lee, Jeong-O;Chang, Hyun-Ju
    • 한국정보디스플레이학회:학술대회논문집
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    • 2004.08a
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    • pp.981-984
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    • 2004

  • We have studied a printability of synthesized silver nano solon ITO glass substrate. The highly concentrated polymeric dispersant-assisted silver nano sol was prepared by variation of molecular weight and control of initial nucleation and growth of silver nanoparticles, to achive dispersion stability and controlling the size of silver nanoparticles. The synthesized silver nano-sol was tested for printability to explore the possibility of micro-electrodes patterning on ITO glass substrate. The silver micro-electrode with 50${\sim}100{\mu}m$ line width was formed on ITO glass substrate.

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Hydrophobic modification of PVDF hollow fiber membranes using polydimethylsiloxane for VMD process

  • Cui, Zhaoliang;Tong, Daqing;Li, Xue;Wang, Xiaozu;Wang, Zhaohui
    • Membrane and Water Treatment
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    • v.10 no.4
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    • pp.251-257
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    • 2019

  • Fabricating hydrophobic porous membrane is important for exploring the applications of membrane distillation (MD). In the present paper, poly(vinylidene fluoride) (PVDF) hollow fiber membrane was modified by coating polydimethylsiloxane (PDMS) on its surface. The effects of PDMS concentration, cross-linking temperature and cross-linking time on the performance of the composite membranes in a vacuum membrane distillation (VMD) process were investigated. It was found that the hydrophobicity and the VMD performance of the PVDF hollow fiber membrane were obviously improved by coating PDMS. The optimal PDMS concentration, cross-linking temperature and cross-linking time were 0.5 wt%, $80^{\circ}C$, and 9 hr, respectively.

  • https://doi.org/10.12989/mwt.2019.10.4.251 인용 KSCI

Soft Lithographic Patterning Method for Flexible Graphene-based Chemical Sensors with Heaters

  • Kang, Min-a;Jung, Min Wook;Myung, Sung;Song, Wooseok;Lee, Sun Suk;Lim, Jongsun;Park, Chong-Yun;An, Ki-Seok
    • Proceedings of the Korean Vacuum Society Conference
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    • 2014.02a
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    • pp.176.2-176.2
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    • 2014

  • In this work, we demonstrated that the fabrication of flexible graphene-based chemical sensor with heaters by soft lithographic patterning method [1]. First, monolayer and multilayer graphene were prepared by thermal chemical vapor deposition transferred onto SiO2 / Si substrate in order to fabrication of patterned-sensor and -heater. Second, patterned-monolayer and multilayer graphene were detached through soft lithography process, which was transferred on top and bottom sides of PET film. Third, Au / Ti (Thickness : 100/30 nm) electrodes were deposited end of the patterned-graphene line by sputtering system. Finally, we measured sensor properties through injection of NO2 and CO2 gas on different temperature with voltage change of graphene heater.

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