대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제27권1호
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  • Pages.46-53
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  • 2003
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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단극하전을 이용한 나노입자 응집성장 제어

Aggregation of Nanoparticles Using a Unipolar Charging Technique

  • 박형호 (한국과학기술원 기계공학과) ;
  • 김상수 (한국과학기술원 기계공학과) ;
  • 장혁상 (영남대학교 환경공학과)
  • 발행 : 2003.01.01
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초록

Effects of electric force on the morphology and growth of aggregates were studied experimentally. Nano-sized NaCl particles were supplied to a flame to perform the unipolar charging state. This electric precursor did not modify a temperature profile of the flame. The morphology of aggregates was measured by TEM image processing technique and the light scattering technique. In the unipolar charged state, the fractal dimension of aggregates was smaller than that of' the electrically neutral state. This result was in good agreement with our previous numerical simulations.

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참고문헌

  1. Kruis, E. F., Fissan, H. and Peled, A., 1998, 'Synthesis of Nanoparticles in the Gas Phase for Electronic, Optical and Magnetic Applications-a Review,' J. Aerosol Sci., Vol. 29, pp. 511-535 https://doi.org/10.1016/S0021-8502(97)10032-5
  2. Zhu, W. and Pratsinis, S. E., 1996, 'Flame Synthesis of Nanosize Particles: Effect of Flame Configuration and Oxidant Composition,' Nanotechnology, eds G.-M. Chow and K. E. Gonsalves ACS Symposium Ser. Vol. 622, pp. 64-78 https://doi.org/10.1021/bk-1996-0622.ch004
  3. Fotou, G. P., Pratsinis, S. E. and Baron, P. A., 1994a, 'Coating of Silica Fibers by Ultrafine Particles in a Flame Reactor,' Chem. Eng. Sci., Vol. 49, 1651-1662 https://doi.org/10.1016/0009-2509(94)85065-8
  4. Fotou, G. P., Vemury, S. and Pratsinis, S. E., 1994b, Synthesis and Evaluation of Titania Powders for Photodestruction of Phenol,' Chem. Eng. Sci., Vol. 49, 4939-4948 https://doi.org/10.1016/0009-2509(94)00394-7
  5. Pratsinis, S. E., 1998, 'Flame Aerosol Synthesis of Ceramic Powders,' Prog. Energy. Combust. Sci., Vol. 24,, pp. 197-219 https://doi.org/10.1016/S0360-1285(97)00028-2
  6. Xiong, Y., Pratsinis, S. E. and Mastrangelo S. V. R., 1992, 'The Effect of Ionic Additives on Aerosol Coagulation,' J. Colloid Interface Sci., Vol. 153, pp. 106-117 https://doi.org/10.1016/0021-9797(92)90301-2
  7. Vemury, S., Pratsinis, S. E. and Kibbey, L., 1997, 'Electrically Controlled Flame Synthesis of Nanophase $TiO_2$ $SiO_2$ and $SnO_2$ Powders https://doi.org/10.1557/JMR.1997.0144
  8. Hyeon-Lee, J., Beaucage, G., Pratsinis, S. E. and Vemury S., 1998, 'Fractal Analysis of Flame-Synthesized Nanostructured Silica and Titania Powders Using Small-Angle X-Ray Scattering', Longmuir 1998, pp. 5751-5756 https://doi.org/10.1021/la980308s
  9. Julien. R. and Bodet, R., 1987, Aggregation and Fractal Aggregates. World Scientific, Singapore, pp. 52-57
  10. Park, H., Kim, S. and Chang, H., 2002, 'Numerical Simulation for the Non-Spherical Aggregation of Charged Particles', Transactions of the KSME (B), Vol. 26, pp. 227-237 https://doi.org/10.3795/KSME-B.2002.26.2.227
  11. Kerker, M., 1969, The Scattering of Light and Other Electromagnetic Radiation, Academic Press, New York
  12. Berne, B. R. and Percora, R., 1976, Dynamic Light Scattering, John Wiley and Sons, New York, 1988
  13. Mountain, R. D. and Mulholland, G. W., 1988, 'Light Scattering from Simulated Smoke Agglomerates,' Langmuir 1988, pp. 1321-1326 https://doi.org/10.1021/la00084a021
  14. Chang, H. and Biswas, P., 1992, 'In situ Light Scattering Dissymmetry Measurements of the Evolution of the Aerosol Size Distribution in Flames,' J. Colloid and Interface Sci., Vol. 153, pp. 157-166 https://doi.org/10.1016/0021-9797(92)90307-8
  15. Smyth, K. C., Miller, J. H., Dorfman, R. C., Mallard, W. G. and Santoro, R. F., 1985, 'Soot Inception in a Methane/air Diffusion Flame as Characterized by Detailed Species Profiles,' Combust. Flame, Vol. 62, pp. 157-181 https://doi.org/10.1016/0010-2180(85)90143-9
  16. White, F. M., 1984, Heat Transfer, Addison-Wesley Publishing Company, p. 552
  17. Hurd, A. J. and Flower, W. L., 1987, 'In situ Growth and Structure of Fractal Silica Aggregates in a Flame,' J. Colloid and Interface Sci., Vol. 122, pp. 178-192 https://doi.org/10.1016/0021-9797(88)90301-3