Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Synthesis and Characterization of Glold Nanofluid Prepared by the Solution Plasma Processing

용액 플라즈마 공정을 이용하여 제조된 금 나노유체의 특성평가

  • Heo, Yong-Kang (Nano Materials Processing Laboratory Department of Material Engineering, Korea Aerospace University) ;
  • Lee, Sang-Yul (Nano Materials Processing Laboratory Department of Material Engineering, Korea Aerospace University)
  • 허용강 (한국항공대학교 항공재료공학과) ;
  • 이상율 (한국항공대학교 항공재료공학과)
  • Received : 2010.07.02
  • Accepted : 2010.08.13
  • Published : 2010.08.28
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Abstract

In the present work, water-based gold nanofluids were synthesized by the solution plasma processing (SPP). The size distribution and the shape of gold nanoparticles in the nanofluids were investigated using high resolution transmission electron microscopy (HR-TEM). The dispersion stability of gold nanofluids was characterized using zeta potential, as well. The thermal properties of gold nanofluids were measured by utilizing lambda measurement device. Nanofluids containing nanoparticles with $64.0{\pm}42.1\;nm{\sim}18.10{\pm}5.0\;nm$ in diameter were successfully synthesized. As diameter of nanoparticles decreased, dispersion stability of nanofluids increased and the enhanced ratio of thermal conductivity increased. The nanofluid with nanoparticles of $18.10\;{\pm}\;5.0\;nm$ in diameter showed approximately 3% improvement in thermal conductivity measurement and this could be due to the enhanced Brownian movement.

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