Huan-Jang Keh Professor

Index
Huan-Jang Keh Professor
葛煥彰 教授
phone:(02)3366-3048
fax:(02)2362-3040
email: huan@ntu.edu.tw
office:Dept.of Chemical Engineering 208
Lab Info

Colloid and Interface Laboratory

Dept.of Chemical Engineering 104A;305
(02)3366-3015; (02)3366-3053
  • Education Background

B.S.Ch.E. National Taiwan University,1978
M.S.Ch.E. University of Florida, 1980
Ph.D.Ch.E.Carnegie Mellon University,1984

  • Research Topic

Phoretic Motions of Colloidal Particles and Electrokinetic Phenomena
Colloidal particles can be driven to move by the application of a non-uniform field (such as temperature, solute concentration, electric potential, etc.) that interacts with the interfacial region at the surface of each particle. These phenomena are known as ”phoretic motions”, which include electrophoresis (or relatively, electro-osmosis of ionic fluids) and diffusiophoresis of charged particles, thermocapillary motion of fluid droplets, thermophoresis of aerosol particles, and osmophoresis of semi-permeable vesicles. Theoretical studies of the particle-particle and particle-wall interactions in various phoretic motions and of electrokinetic phenomena in suspensions and porous media are currently under way. Applications of this work are found in colloidal transport, characterization, and separation, microfluidics and nanofluidics, processing of materials, and motility of biological cells.

  • Recent Research Topic

1.Thermophoretic motion of nonspherical aerosol particles (2/3) 非球形氣膠粒子之熱泳 (2/3) Huan J. Keh, sponsored by National Science Council, NSC 97-2221-E-002-075-MY3, NT$ 974,000, 8/1/2009-7/31/2011.

  • Honor
  1. Distinguished Researcher Award (傑出特約研究員獎), National Science Council (Ministry of Science and Technology), Taiwan, ROC, 2005.
  2. Academic Award (學術獎), Ministry of Education, Taiwan, ROC, 2008.
  3. Dean, College of Engineering, National Taiwan University, 2005-2011.
  4. Excellent Teaching Awards (教學優良教師獎), National Taiwan University, 2014, 2016, 2017.
  5. International Scientific Committee Member, International Conference of Microfluidics, Nanofluidics and Lab-on-a-Chip, Dalian, China, June 2016.
  6. Member, International Advisory Board, International Symposium on Electrokinetic Phenomena – ELKIN, 2013-now.
  7. Scientific Committee Member, International Conference on Fluid Flow, Heat and Mass Transfer [FFHMT], Canada, 2016-now.
  8. Distinguished Professor (特聘教授), National Taiwan University, 2006-now.
  1. W. C. Li and H. J. Keh, “Diffusiophoretic mobility of charge-regulating porous particles”, Electrophoresis, 37(15-16), 2139-2146, 2016(Aug), (SCI,EI)
  2. Y. C. Chang and H. J. Keh, “Thermophoresis and Photophoresis of Aerosol Cylinders with Effects of Thermal Stress Slip”, American Journal of Heat and Mass Transfer, 4(2), 85-103, 2017(Jan)
  3. H. C. Chiu and H. J. Keh, “Electrophoresis and diffusiophoresis of a colloidal sphere with double-layer polarization in a concentric charged cavity”, Microfluidics and Nanofluidics, 21(3), 45 (1-12), 2017(Mar), (SCI,EI)
  4. C. Y. Li and H. J. Keh, “Thermophoresis of a spherical particle in a microtube”, Journal of Aerosol Science, 113, 71-84, 2017(Nov), (SCI,EI)
  5. H. C. Chiu and H. J. Keh, “Diffusiophoresis of a charged particle in a microtube”, Electrophoresis, 38(19), 2468-2478, 2017(Oct), (SCI,EI)
  6. H. Y. Yeh and H. J. Keh, “Axisymmetric Slow Motion of a Prolate Particle in a Circular Capillary with Slip Surfaces”, Cmes-Computer Modeling in Engineering & Sciences, 113(3), 343-366, 2017(Sep)
  7. C. Y. Li and H. J. Keh, “Thermophoresis of a particle in a concentric cavity with thermal stress slip”, Aerosol Science and Technology, 52(3), 269-276, 2018(Mar), (SCI,EI)
  8. Y. Z. Yeh and H. J. Keh, “Diffusiophoresis of a charged porous shell in electrolyte gradients”, Colloid and Polymer Science, 296(3), 451-459, 2018(Mar), (SCI,EI)
  9. H. C. Ma and H. J. Keh, “Diffusioosmotic Effects on Water Transport in a PEM Fuel Cell”, American Journal of Heat and Mass Transfer, 5(1), 35-48, 2018(Apr)
  10. Y. C. Chiu and H. J. Keh, “Diffusiophoresis of a charged particle in a charged cavity with arbitrary electric double layer thickness”, Microfluidics and Nanofluidics, 22(8), 84 (1-13), 2018(Aug), (SCI,EI)
  11. Y. C. Chang and H. J. Keh, “Thermophoresis at small but finite Peclet numbers”, Aerosol Science and Technology, 52(9), 1028-1036, 2018(Sep), (SCI,EI)
  12. Y. C. Chiu and H. J. Keh, “Diffusiophoresis of a Charged Porous Particle in a Charged Cavity”, Journal of Physical Chemistry B, 122(42), 9803-9814, 2018(Oct), (SCI,EI)
  13. Y. Z. Yeh and H. J. Keh, “Sedimentation Velocity and Potential in Dilute Suspensions of Charged Porous Shells”, Journal of Physical Chemistry B, 122(45), 10393-10400, 2018(Nov), (SCI,EI)
  14. Y. W. Su and H. J. Keh, “Electrokinetic Flow of Salt-Free Solutions in a Fibrous Porous Medium”, Journal of Physical Chemistry B, 123(45), 9724-9730, 2019(Nov), (SCI,EI)
  15. C. Y. Lin and H. J. Keh, “Sedimentation Velocity and Potential in Dilute Suspensions of Charge-Regulating Porous Spheres”, Journal of Physical Chemistry B, 123(13), 3002-3009, 2019(Apr), (SCI,EI)
  16. C. Y. Li and H. J. Keh, “Axisymmetric thermophoresis of an aerosol particle in a spherical cavity”, Journal of Aerosol Science, 135, 33-45, 2019(Sep), (SCI,EI)
  17. Y. C. Chang and H. J. Keh, “Diffusiophoresis of a Colloidal Cylinder at Small Finite Peclet Numbers”, Colloids and Interfaces, 3(2), 44 (1-11), 2019(Jun)
  18. Y. C. Chang and H. J. Keh, “Diffusiophoresis of Colloidal Spheres at Small Péclet Numbers”, Trends in Chemical Engineering, 17, 91-98, 2019(Dec)
  19. Y. M. Tseng and H. J. Keh, “Thermophoretic Motion of an Aerosol Sphere in a Spherical Cavity”, European Journal of Mechanics B Fluids, 81, 93-104, 2020(Jun), (SCI,EI)
  20. Y. C. Lai and H. J. Keh, “Transient Electrophoresis of a Charged Porous Particle”, Electrophoresis, 41(3), 259-265, 2020(Feb), (SCI,EI)