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Education

Ph.D. in Chemical Engineering, City University of New York, 2000.

B.S. in Chemical Engineering, National Taiwan University, 1991.

Experience

Associate Professor, Department of Chemical Engineering, National Cheng Kung University, 2006-present.

Assistant Professor, Department of Chemical Engineering, National Cheng Kung University, 2003-2006.

Postdoctoral Fellow, Department of Biomedical Engineering, University of Michigan, 2000-2003.

Research

On Microfluidics

  1. Huh, D., Tung, Y.-C., Wei, H.-H., Grotberg, J.B., Skerlos, S.J., Kurabayashi, K., Takayama, S., “Use of Air-Liquid Two-Phase Flow in Hydrophobic Microfluidic Channels for Disposable Flow Cytometers”, Biomedical Microdevices, 4(2), 141-149 (2002).
  2. Huh, D., Tkaczyk, A.H., Bahng, J.H., Chang, Y., Wei, H.-H., Grotberg, J.B., Kim, C.J., Kurabayashi,K., Takayama, S., “Reversible Switching of High-Speed Air–Liquid Two-Phase Flows Using Electrowetting-Assisted Flow-Pattern Change”, Journal of the American Chemical Society, 125(48), 14678–14679 (2003).
  3. Wu, J.-T., Du, J.-R., Juang, Y.-J., and Wei, H.-H., “Rectified Elongational Streaming Due to Asymmetric Electro-osmosis Induced by AC Polarization”, Applied Physics Letters, 90(13), 134103 (3 pages) (2007).
  4. Hsieh, S.-F., Shih, M.-L., Du, J.-R., Chang,C.-P, Wu, J.-T., Wei, H.-H., “New Strategies Utilizing Transport Phenomena for Engineering Systems at the Nanoliter Scale”, Chemical Engineering (in Chinese, published by Taiwan Institute of Chemical Engineers), 54(5), 3–20 (2007). This paper was selected to be one of the best papers in the year.
  5. Huh, D., Bahng, J.H., Ling. Y., Wei. H.-H., Kripfgans, O.D., Fowlkes, J.B., Grotberg, J.B., Takayama, S., “Gravity-Driven Microfluidic Particle Sorting Device with Hydrodynamic Separation Amplification”, Analytical Chemistry, 79(4), 1369–1376 (2007).
  6. Wang, S.-C., Wei, H.-H., Chen, H.-P., Tsai, M.-H., Yu, C.-C., Chang, H.-C., “Dynamic Superconcentration at Critical-Point Double-Layer Gates of Conducting Nanoporous Granules Due to Asymmetric Tangential Fluxes", Biomicrofluidics, 2, 014102 (9 pages) (2008).
  7. Kuo, A.-T., Chang, C.-H., Wei, H.-H., “Transient Currents in Electrolyte Displacement by Asymmetric Electro-osmosis and Determination of Surface Zeta Potentials of Composite Microchannels”, Applied Physics Letters, 92(24), 244102 (3 pages) (2008).
  8. Du, J.-R., Juang, Y.-J., Wu, J.-T., and Wei, H.-H.,Long-Range and Superfast Trapping of DNA Molecules in an AC Electrokinetic Funnel”, Biomicrofluidics, 2, 044103 (10 pages) (2008).
  9. Tang, S.-W., Chang, C.-H., Wei, H.-H., “Application of Electroosmotically-Driven Solution Displacement for On-Chip Probing and Characterization of Protein Adsorption”, Applied Physics Letters, 97(4), 043704 (3 pages) (2010). This paper was selected for the August 1, 2010 issue of Virtual Journal of Biological Physics Research.
  10. Du, J.-R, Wei, H.-H., “Focusing and Trapping of DNA Molecules by Head-On AC Electrokinetic Streaming through Join Asymmetric Polarization”, Biomicrofluidics, 4(3), 034108 (13 pages) (2010). This paper was selected for the September 1, 2010 issue of Virtual Journal of Biological Physics Research.

 

On Electrokinetic Phenomena

  1. Wei, H.-H., “Shear-Modulated Electroosmotic Flow on a Patterned Charged Surface”, Journal of Colloid and Interface Science, 284(2), 742–752 (2005). 
  2. Wei, H.-H.,Dynamic Surfing and Trapping of Charged Colloids in a Traveling-Wave Electrophoretic Ratchet”, Applied Physics Letters, 90(20), 204103 (3 pages) (2007).
  3. Halpern, D., Wei, H.-H.,Electroosmotic Flow in a Microcavity with Non-Uniform Surface Charges”, Langmuir, 23(18), 9505–9512 (2007).
  4. Liu, S.-J., Hwang, S.-H., Wei, H.-H., “Nonuniform Electro-Osmotic Flow on Charged Strips and Its Use in Particle Trapping”, Langmuir, 24(23), 13776–13789 (2008).
  5. Basuray, S., Wei, H.-H. , Chang, C.-H., “Dynamic Double Layer Effects on AC-Induced Dipoles of Dielectric Nanocolloids”, Biomicrofluidics, 4(2), 022801 (7 pages) (2010).
  6. Tang, S.-W., Chang, C.-H., Wei, H.-H., “Roles of Solution Conductivity Mismatch in Transient Current and Fluid Transport in Electrolyte Displacement by Electro-Osmotic Flow”, Microfluidics and Nanofluidics,17 pages, published online on 7/23/2010.

 

On Single Molecule Manipulation and Dynamics

  1. Hsieh, S.-F., Chang, C.-P., Juang, Y.-J., Wei, H.-H., “Stretching DNA with Electric Fields beneath Submicron Interfacial Constriction Created by a Closely Fitting Microdroplet in a Microchannel”, Applied Physics Letters, 93(8), 084103 (3 pages) (2008).
  2. Hsieh, S.-F., Wei, H.-H., “Entropic Trap, Surface-Mediated Combing, and Assembly of DNA Molecules within Submicrometer Interfacial Confinement”, Physical Review E, 79(2), 021901 (8 pages) (2009). This paper was selected for the February 15, 2009 issue of Virtual Journal of Biological Physics Research.
  3. Chang, C.-P, Wei, H.-H., “Stretching DNA with Moving Slugs”, submitted.
  4. Hsieh, Y.-Y., Wei, H.-H., “Relaxation of Stretched DNA in Monolayer Surfactant Brushes, in preparation”.

 

On Colloidal Dynamics and Microrheology

  1. Wei, H.-H., Jan, J.-S., “Self-Propulsion and Dispersion of Reactive Colloids Due to Entropic Anisotropy”, Journal of Fluid Mechanics, 657, 64–88 (2010).
  2. Liu, S.-J., Wei, H.-H., Hwang, S.-H., Chang, C.-H., “Dynamic Particle Trapping, Release, and Sorting by Microvortices on a Substrate”, Physical Review E, 82(2), 026308 (16 pages) (2010).
  3. Lin, S.-F., Wen, T.-C. Wei, H.-H., “Directing Colloidal Assembly with Enhanced AC Polarization around a Conducting Microwire”, submitted.
  4. Jan, J.-S., Lin, S.-H, Wei, H.-H., “Probing Intrachain Interactions within a Single Macromolecule Using Particle-Tracking Microrheology: A New Approach to Revealing Conformation Changes of a Polyelectrolyte Chain in a Multivalent Salt Solution”, in preparation.

 

On Synthesis of Advanced Materials in Microdevices  

  1. Chen, H.-Y., Chen, H.-L., Wen, T.-C., Wei, H.-H., “Polymerization-Driven Assembly of Polyaniline within a Compound Drop: Diffusion-Controlled Protonation-Induced Coil Stretch Transition toward Formation of Anisotropic Micro/Nanostructures”, submitted.
  2. Jen, T.-M., Wei, H.-H., “Hydrodynamics-Mediated Formation of Nanowires Using Structured Micro-reactors”, in preparation.

 

On Biofluid Mechanics 

  1. Wei, H.-H., Waters, S.L., Liu, S.Q., Grotberg, J.B., “Flow in a Wavy-Walled Channel Lined with a Poroelastic Layer”, Journal of Fluid Mechanics, 492, 23-45 (2003).
  2. Wei, H.-H., Benintendi, S.W., Halpern, D., Grotberg, J.B., “Cycle-Induced Flow and Transport in a Model of the Alveolar Liquid Lining”, Journal of Fluid Mechanics, 483, 1-36 (2003).
  3. Wei, H.-H., Fujioka, H., Hirschl, R.B., Grotberg, J.B., “A Model of Flow and Surfactant Transport in an Oscillatory Alveolus Partially Filled with Liquid”, Physics of Fluids, 17(3), 031510 (16 pages) (2005).

 

On Interfacial Flow and Transport Phenomena 

  1. Wei, H.-H., Rumschitzki, D.S., “The Linear Stability of a Core-Annular Flow in an Asymptotically Corrugated Tube”, Journal of Fluid Mechanics, 466, 113-147 (2002).
  2. Wei, H.-H., Rumschitzki, D.S., “The Weakly Nonlinear Interfacial Stability of a Core-Annular Flow in a Corrugated Tube”, Journal of Fluid Mechanics, 466, 149-177 (2002).
  3. Wei, H.-H., “Effect of Surfactant on the Long-Wave Instability of a Shear-Imposed Liquid Flow Down an Inclined Plane”, Physics of Fluids, 17(1), 012103 (5 pages) (2005).
  4. Wei, H.-H., “Marangoni Destabilization on a Core-Annular Film Flow Due to the Presence of Surfactant”, Physics of Fluids, 17(2), 027101 (9 pages) (2005).
  5. Wei, H.-H., “Stability of a Viscoelastic Falling Film with Surfactant Subjected to an Interfacial Shear”, Physical Review E, 71(6), 066306 (8 pages) (2005).
  6. Wei, H.-H., Rumschitzki, D.S., “The Effects of Insoluble Surfactants on the Linear Stability of a Core-Annular Flow”, Journal of Fluid Mechanics, 541, 115–142 (2005).
  7. Wei, H.-H., “On the Flow-Induced Marangoni Instability Due to the Presence of Surfactant”, Journal of Fluid Mechanics, 544, 173-200 (2005).
  8. Wei, H.-H., “Thermocapillary Instability of Core-Annular Flows”, Physics of Fluids, 17(10), 102102 (13 pages) (2005).
  9. Wei, H.-H., Halpern, D., Grotberg, J.B., “Linear Stability of a Surfactant-Laden Annular Film in a Time-Periodic Pressure-Driven Flow through a Capillary”, Journal of Colloid and Interface Science, 285(2), 769–780 (2005).
  10. Wei, H.-H.,Shear-Flow and Thermocapillary Interfacial Instabilities in a Two-Layer Viscous Flow”, Physics of Fluids, 18(6), 064019 (14 pages) (2006).
  11. Wei, H.-H., “Role of Base Flows on Surfactant-Driven Interfacial Instabilities”, Physical Review E, 75(3), 036306 (6 pages) (2007).
  12. Yang, M.-W., Wei, H.-H., Lin, S.-Y., “A Theoretical Study on Surfactant Adsorption Kinetics: Effect of Bubble Shape on Dynamic Surface Tension”, Langmuir, 23(25), 12606–12616 (2007).
  13. Wei, H.-H., Yang, M.-W., Lin, S.-Y., “An Examination on the Validity of the Assumptions Commonly Made in Dynamic Surface Tension Measurement Using a Pendant Bubble”, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 317(1–3), 284–288 (2008).
Teaching
  • Chemical Engineering Thermodynamics, Falls in 2003-2010.
  • Biomedical Transport Phenomena, Falls in 2003-2007.
  • Introduction to Biomedical Engineering, Springs in 2004-2009.
  • Scaling Concepts in Microfluidics, Falls in 2008-2010.
  • Microhydrodynamics and its Applications, Springs in 2005-2007.
Services
  • Department Committee on Curriculum, Student Affairs, Budget Managing, and Space Planning. 2004–2010.
  • Undergraduate Admissions Committee, 2007, 2008, & 2010.
  • Examiner for the Graduate School Entrance Examination (in Chemical Engineering Thermodynamics), 2004–2010.
  • Advisory Committee on the Professional English Program of National Cheng Kung University, 2009.
  • Organizing Committee, 2006 International Conference on Chemical and Molecular Technologies.
  • Organizing Committee, 2007 Taipei International Workshop for Soft Matter and Biophysics.
  • Preparatory Committee for Engineering and Educational Accreditation for Both Undergraduate and Graduate Programs, 2006 & 2009.
  • Organizer for Special Issue on Microfluidics in Chemical Engineering Magazine Issued by Taiwan Institute of Chemical Engineers, 2009.
  • Reviewer for Journal of Fluid Mechanics, Physics of Fluids, Physical Review E, Journal of Colloid and Interface Science, Applied Physics Letters, Microfluidics and Nanofluidics, and Biomicrofluidics.
  • Grant Proposal Reviewer for National Science Council of Taiwan.


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