• Title/Summary/Keyword: Electrostatic spray pyrolysis

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Deposition of MgO Thin Films by Electrostatic Spray Pyrolysis(ESP) method and Application to AC-PDP (정전기 분무 열분해법에 의한 MgO 박막 증착과 AC-PDP로의 용용에 대한 연구)

  • Kim, Soo-Gil;Eun, Jae-Hwan;Kim, Hyeong-Joon;Kim, Young-Kee;Park, Chung-Hoo
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2000.04a
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    • pp.133-138
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    • 2000
  • MgO thin films were deposited using $Mg(tmhd)_2$ as a precursor dissolved in a solvent by electrostatic spray pyrolysis. When a pure tetra hydro furan was used as a solvent, a large number of particles appeared on the MgO thin film surface due to homogeneous nucleation. However, by adding 1-butyl alcohol or 1-octyl alcohol to THF, homogeneous nucleation was restricted and the number density of the large particles was also drastically reduced. X-ray diffraction analysis showed that the MgO films had a (100) preferred orientation regardless of the type of solvents used. Characterization using Fourier Transformed-Infrared and spectroscopic photometer revealed that the crystallized MgO thin films on the glass substrate had a high optical transmittance (> 85 %) in the visible range. Discharge characteristics of MgO thin films deposited by ESP method on an alternating-current plasma display panel were compared with a MgO thin film prepared by reactive radio-frequency planar magnetron sputtering.

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Preparation of electrostatic spray pyrolysis derived nano powder and hydroxyapatite forming ability (정전분무 열분해법에 의한 나노분말의 제조 및 하이드록시 아파타이트 형성능력 평가)

  • Lee, Young-Hwan;Jeon, Kyung-Ok;Jeon, Young-Sun;Lee, Ji-Chang;Hwang, Kyu-Seog
    • Journal of the Korean Crystal Growth and Crystal Technology
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    • v.16 no.6
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    • pp.244-249
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    • 2006
  • Electrostatic spray pyrolysis, a novel fabrication technique, has been used in this study to prepare calcium phosphate nano powders. Final annealing was done at $400^{\circ}C$ for 30min in air. The hydroxyapatite - forming ability of the annealed powder has been evaluated in Eagle's minimum essential medium solution (MEM). X-ray diffraction analysis, field emission - scanning electron microscope, energy dispersive X-ray spectroscope, and Fourier transform infrared spectroscope were used to characterized the annealed powders after immersion in MEM. The powder with an amorphous structure induced hydroxyapatite formation on their surfaces after immersion fer 15 days.