PENGER TONG
Experimental Condensed Matter Physics
Professor, Department of Physics
Hong Kong University of Science and Technology

Clear Water Bay, Kowloon, Hong Kong SAR
Tel: (852) 2358-7498; Fax: (852) 2358-1652
E-mail: penger@ust.hk
http://physics.ust.hk/penger/

EDUCATION
1984-1988, Ph.D. in Physics, University of Pittsburgh, USA.  Dissertation: Relative velocity fluctuations in turbulent flows at moderate Reynolds numbers. Advisor: Walter  I. Goldburg.
1983-1984, M.Sc. in Physics, University of Pittsburgh, USA.
1978-1982, B.Sc. in Physics, Northeastern University, China.

EMPLOYMENT  
2003-present: Professor of Physics, Hong Kong University of Science & Technology, Hong Kong.

1999-2002: Professor of Physics, Oklahoma State University, USA.

2001 (sabbatical leave): Visiting Scientist of Applied Physics, Harvard University, USA.

1995-1999: Associate Professor of Physics, Oklahoma State University, USA.

1990-1995: Assistant Professor of Physics, Oklahoma State University, USA.

1988-1990, Postdoctoral Research Associate, Exxon Research & Engineering Company, New Jersey, USA. Supervisors: Thomas A. Witten and John S. Huang.

TEACHING EXPERIENCE
Undergraduate courses: general physics, optics, advanced mechanics, general physics laboratory, advanced physics laboratories, electromagnetic radiation. Graduate courses: modern optics, statistical thermodynamics.

CURRENT RESEARCH INTERESTS
Nonequilibrium dynamics in flow systems: statistical properties of fully developed turbulence, high Rayleigh-number thermal convection, transport phenomena in turbulent flows, pattern formation in rotating suspensions of non-Brownian particles, and the development of novel fiber-optic methods for the measurements of velocity gradient and flow vorticity.
Soft condensed matter physics: structures, interactions, and dynamics in colloidal suspensions, microemulsions, polymer solutions and in their mixtures; flow properties and macromolecular transport in porous media; particle sedimentation in simple and complex fluids; microrheological properties of polymer solutions, gels, and biomaterials.  

HONORS, PROFESSIONAL SERVICES, AND AFFILIATIONS
Co-editor of the American Chemical Society Symposium Series Vol. 532 developed from the ACS symposium on Colloid-Polymer Interactions, 1993.  C N Yang Visiting Fellow, the Chinese University of Hong Kong, June-July, 1994. NASA Microgravity Review Panel Member (1998, 2000).  Reviewer for National Science Foundation (USA), National Aeronautics and Space Administration (USA), Department of Energy (USA), Petroleum Research Fund (USA), Netherlands Foundation for Fundamental Research on Matter, Research Grants Council of Hong Kong, and National Science Foundation of China.  Referee for Nature, Physical Review Letters, Physical Review E, Macromolecules, Journal of Fluid Mechanics, Physics of Fluids, Journal of the American Chemical Society and several other journals and publishers.  External Examiner of Master and Ph.D. thesis committees, the Chinese University of Hong Kong.  Member of American Physical Society.

PUBLICATIONS
Refereed Journal Articles:
(1) "Turbulent Transition by Photon Correlation Spectroscopy," P. Tong, W. I. Goldburg, C. K. Chan and A. Sirivat, Physical Review A, 37, 2125 (1988).
(2) "Experimental Study of Relative Velocity Fluctuations in Turbulence," P. Tong and W. I. Goldburg, Physics Letters A, 127, 147, (1988).
(3) "Relative Velocity Fluctuations in Turbulent Flows at Moderate Reynolds Number I. Experimental," P. Tong and W. I. Goldburg, Physics of Fluids, 31(10), 2841 (1988).
(4) "Relative Velocity Fluctuations in Turbulent Flows at Moderate Reynolds Number II. Model Calculation," P. Tong and W. I. Goldburg, Physics of Fluids, 31(11), 3253 (1988).
(5) "Temporal Fluctuations in a Turbulently Stirred Binary Liquid Mixture," P. Tong, W. I. Goldburg, J. Stavans, and A. Onuki, Physical Review Letters, 62, 2668 (1989).
(6) "Using Photon Correlation Spectroscopy to Study Small-Scale Turbulence," W. I. Goldburg and P. Tong, Physica Scripta, 40, 424 (1989).
(7) "A Light Scattering Study of Turbulence," W. I. Goldburg, P. Tong and H. K. Pak, Physica D, 38, 134(1989).
(8) "Comparison of Light Scattering of Colloidal Dispersions with Direct Force Measurements between Analogous Macroscopic Surfaces," M. L. Gee, P. Tong, J. N. Israelachvili and T. A. Witten, J. Chem. Phys. 93, 6057 (1990).
(9) "Interactions in Mixtures of Colloid and Polymer," P. Tong, T. A. Witten, J. S. Huang and L. J. Fetters, J. Phys. France, 51, 2813 (1990).
(10) "Anisotropy in Turbulent Drag Reduction," P. Tong, W. I. Goldburg, J. S. Huang and T. A. Witten, Phys. Rev. Lett. 65, 2780 (1990).
(11) "Effect of Elastic Bending Energy on the Emulsification Failure in AOT Microemulsion," X-L Wu, P. Tong, and J. S. Huang, J. Coll. Interface. Sci., 148, 104 (1992).
(12) "Measured Scaling Properties of Inhomogeneous Turbulent Flows," P. Tong, W. I. Goldburg, and J. S. Huang, Physical Review A, 45, 7222 (1992).
(13) "Measured Effects of Polymer Additives on Turbulent Velocity Fluctuations at Various Length scales," P. Tong, W. I. Goldburg, and J. S. Huang, Physical Review A, 45, 7231 (1992).
(14) "Relative Velocity Fluctuations in Turbulent Rayleigh-Benard Convection," P. Tong and Y. Shen, Phys. Rev. Lett., 69, 2066 (1992).
(15) "Adsorption of End-Functionalized Polymers on Colloidal Spheres," B. L. Carvalho, P. Tong, J. S. Huang, T. A. Witten and L. J. Fetters, Macromolecules, 26, 4632 (1993).
(16) "Incoherent Cross-correlation Spectroscopy," P. Tong, K. -Q. Xia, and B. J. Ackerson, J. Chem. Phys. 98, 9256 (1993).
(17) "Dual-beam Incoherent Cross-correlation Spectroscopy," K. -Q. Xia, Y.-B. Xin and P. Tong, J. Opt. Soc. Am. A, 12, 1571 (1995).
(18) "Measured Local-velocity Fluctuations in Turbulent Convection," Y. Shen, K. -Q. Xia and P. Tong, Phys. Rev. Lett. 75, 437 (1995).
(19) "Turbulent Convection over Rough Surfaces," Y. Shen, P. Tong, and K. -Q. Xia, Phys. Rev. Lett., 76, 908 (1996).
(20) "Neutron Scattering Study of Depletion Interactions in a Colloid-Polymer Mixture, X. Ye, T. Narayanan, P. Tong, and J. S. Huang, Phys. Rev. Lett. 76, 4640 (1996).
(21) "Measured Velocity Boundary Layers in Turbulent Convection," Y.-B. Xin, K. -Q. Xia and P. Tong, Phys. Rev. Lett. 77, 1266 (1996).
(22) "Depletion Interactions in Colloid-Polymer Mixtures," X. Ye, T. Narayanan, P. Tong, J. S. Huang, M. Y. Lin, B. L. Carvalho, and L. J. Fetters, Phys. Rev. E. 54, 6500 (1996).
(23) "Interactions in Mixtures of a Microemulsion and a Polymer," K.-Q. Xia, Y.-B. Zhang, P. Tong, and C. Wu, Phys. Rev. E. 55, 5792 (1997).
(24) "Light Scattering Properties of Paramagnetic Particles," Y.-B. Du and P. Tong, J. Chem. Phys. 107, 355 (1997).
(25) "Neutron Scattering Study of Colloidal Interactions in an Adsorbing Polymer Solution," X. Ye, P. Tong, and L. J. Fetters, Macromolecules, 30, 4103 (1997).
(26) "Measurement of the Velocity Difference Using Photon Correlation Spectroscopy - an Improved Scheme," T. Narayanan, C. Cheung, P. Tong, W. I. Goldburg, and X.-L. Wu, Applied Optics, 36, 7639 (1997).
(27) "Sedimentation of Colloidal Particles through a Polymer Solution," P. Tong, X. Ye, B. J. Ackerson, Phys. Rev. Lett. 79, 2363 (1997).
(28) "Enhanced heat transport in turbulent thermal convection over a rough surface," Y.-B. Du and P. Tong, Phys. Rev. Lett., 81, 987 (1998).
(29) "Velocity Difference Measurement Using a Fiber-optic Coupler," Yixue Du, B. J. Ackerson, and P. Tong, J. Opt. Soc. Am. A. 15, 2433 (1998).
(30) " Transport of Probe Particles in Semidilute Polymer Solutions," X. Ye, P. Tong and L. J. Fetters, Macromolecules, 31, 5785 (1998).
(31) "Colloidal Sedimentation in Polymer Solutions," X. Ye, P. Tong and L. J. Fetters, Macromolecules, 31, 6534 (1998).
(32) "Analogies between Colloidal Sedimentation and Turbulent Convection at High Prandtl Numbers," P. Tong and B. J. Ackerson, Phys. Rev. E, 58, R6931, (1998).
(33) "Turbulent thermal convection in a cell with ordered rough boundaries," Y.-B. Du and P. Tong, J. Fluid Mech. 407, 57 (2000).
(34) "Large-scale coherent rotation and oscillation in turbulent thermal convection," X.-L. Qiu, Y.-S. Yao, and P. Tong, Phys. Rev. E, 61, R6075 (2000).
(35) "Turbulent thermal convection over a rough surface," Y.-B. Du and P. Tong, Phys. Fluids, 12, S11 (2000).
(36) "Measurements of the instantaneous velocity difference and the local velocity with a fiber-optic coupler," S. H. Yao, V. K. Horvath, P. Tong, B. J. Ackerson, and W. I. Goldburg, J. Opt. Soc. Am. A, 18, 696 (2001).
(37) "Settling statistics of hard sphere particles," X. Lei, B. J. Ackerson, and P. Tong, Phys. Rev. Lett. 86,3300 (2001).
(38) "Temperature fluctuations in a convection cell with rough upper and lower surfaces," Y.-B. Du and P. Tong, Phys. Rev. E, 63, 046303 (2001).
(39) "Onset of coherent oscillations in turbulent Rayleigh-Benard convection," X.-L. Qiu and P. Tong, Phys. Rev. Lett. 87, 094501 (2001)
(40) "Proposal and testing for a fiber-optic based measurement of flow vorticity," S. H. Yao, P. Tong, and B. J. Ackerson, Applied Optics, 40, 4022 (2001).
(41) "Large-scale velocity structures in turbulent thermal convection," X.-L. Qiu and P. Tong, Phys. Rev. E, 64, 036304 (2001).

(42) “Subtle order in settling suspensions,” B. J. Ackerson, X. L. Lei, and P. Tong, Pure and Applied Chemistry, 73, 1679 (2001).

(43) “Temperature oscillations in turbulent Rayleigh-Benard convection,” X.-L. Qiu and P. Tong, Phys. Rev. E  66, 026308 (2002).

(44) “Measured local heat transport in turbulent Rayleigh-Benard convection,” X.-D. Shang, X.-L. Qiu, P. Tong and K.-Q. Xia, Phys. Rev. Lett. 90, 074501 (2003).

(45) “Pattern formation in a rotating suspension of non-Brownian settling particles,” W. R. Matson, B. J. Ackerson, and P. Tong, Phys. Rev. E, 67, 050301(R) (2003).

(46) “Intermittency of velocity fluctuations in turbulent thermal convection,” E. S. C. Ching, C. K. Leung, X.-L. Qiu, and P. Tong, Phys. Rev. E, 68, 026307 (2003).

(47) “Velocity oscillations in turbulent Rayleigh-Benard convection,” X.-L. Qiu, X.-D. Shang, P. Tong and K.-Q. Xia, Phys. Fluids, 16, 412 (2004).

(48) “Proposal and testing of dual-beam dynamic light scattering for two-particle microrheology,” X.-L. Qiu, P. Tong, and B. J. Ackerson, Applied Optics, 43, 3382 (2004).

(49) “Measurements of the local convective heat flux in turbulent Rayleigh-Benard convection,” X.-D. Shang, X.-L. Qiu, P. Tong and K.-Q. Xia, Phys. Rev. E, 70, 026308 (2004).

(50) “Extraction of plumes in turbulent thermal convection,” E. S.C. Ching, H. Guo, X-D. Shang, P. Tong, and K.-Q. Xia, Phys. Rev. Lett. 93,

124501 (2004).

(51) “Velocity and temperature cross scaling in turbulent thermal convection,” E. S. C. Ching, K. W. Chui, X.-D. Shang, X. L. Qiu, P. Tong, and K.-Q. Xia, J. Turbulence 5, 027 (2004).

(52) “Concentration and velocity patterns in a horizontal rotating suspension of non-Brownian settling particles,” W. R. Matson, M. Kalyankar, B. J. Ackerson, and P. Tong, Phys. Rev. E, 71, 031401 (2005).

(53) “Three-dimensional flow structures and dynamics of turbulent thermal convection in a cylindrical cell,” C. Sun, K-Q. Xia, and P. Tong, Phys. Rev. E 72, 026302 (2005).

(54) “Test of steady-state fluctuation theorem in turbulent Rayleigh-Benard convection,” X.-D. Shang, P. Tong and K.-Q. Xia, Phys. Rev. E, 72, 015301(R) (2005).

(55) “Long-ranged attraction between charged polystyrene spheres at aqueous interfaces,” W. Chen, S.-S. Tan, T. K. Ng, W. T. Ford, and P. Tong, Phys. Rev. Lett. 95, 218301 (2005).

(56) “Experimental study of velocity boundary layer near a rough conducting surface in turbulent natural convection,” X.-L. Qiu, K.-Q. Xia, and P. Tong, J. Turbulence 6, 1 (2005).

(57) “Measured long-ranged attractive interaction between charged polystyrene latex spheres at a water-air interface,” W. Chen, S.-S. Tan, Z.-S. Huang, T. K. Ng, W. T. Ford, and P. Tong, Phys. Rev. E  74, 021406 (2006).

(58) “Dynamics of rotating suspensions,” W. R. Matson, B. J. Ackerson, and P. Tong, Solid State Communications 139, 605 (2006).

Conference Proceedings and Book Chapters:
(1) "Some Recent Experiments in Turbulently Stirred Fluids," W. I. Goldburg and P. Tong, in Cooperative Dynamics in Complex Physical Systems, edited by H. Takayama (Springer, 1988).
(2) "Scaling in Turbulent Flow: What You Can Learn With Homodyne Spectroscopy," W. I. Goldburg and P. Tong, in Fractal Aspects of Materials: Disordered Systems, edited by D. A. Weitz, L. M. Sander and B. B. Mandelbrot (Materials Research Society, Pittsburgh, 1988), p55.
(3) "Brownian Motion of Small Particles Between Closely Packed Spheres," P. Tong, W. I. Goldburg, and D. J. Pine, in Fractal Aspects of Materials: Disordered Systems, edited by D. A. Weitz, L. M. Sander and B. B. Mandelbrot (Materials Research Society, Pittsburgh, 1988), p.97.
(4) "Scaling in Turbulent Flow by Photon Correlation Spectroscopy," W. I. Goldburg and P. Tong, in Proceedings of Forum on Chaotic Dynamics in Fluid Mechanics, edited by K. N. Ghia et. al. (The American Society of Mechanical Engineers, New York, 1989).
(5) "Scaling Laws in Weak Turbulence," H. K. Pak, W. I. Goldburg, and P. Tong, in Spontaneous Formation of Space-Time Structures and Criticality, edited by T. Riste and D. Sherrington, (Kluwer Academic, Netherlands, 1991).
(6) "Study of the Reduction of Turbulent Drag by Photon Correlation Spectroscopy," P. Tong, W. I. Goldburg, and J. S. Huang, in Complex Fluids, edited by D. Weitz, E. Sirota, T. Witten, J. Israelachvili [Materials Research Society Symposium Proceedings, Volume 248, pp. 151 (1992)].
(7) "A Study of Polymer-Colloid Interaction by Light Scattering," J. S. Huang, P. Tong, B. Carvalho, and L. J. Fetters, in Structure and Dynamics of Strongly Interacting Colloids and Supramolecular Aggregates in Solution, edited by S. -H. Chen, J. S. Huang, and P. Tartaglia, (Kluwer Academic, Netherlands, 1992).
(8) "Light Scattering Studies of Adsorption of End-functionalized Polymers in Colloidal Solutions," P. Tong, B. L. Carvalho, J. S. Huang, and L. J. Fetters, in Colloid-Polymer Interactions, edited by P. L. Dubin and P. Tong (American Chemical Society Symposium Series Vol. 532, p. 96, 1993).
(9) "Polymer-Induced Depletion Interaction and its Effect on Colloidal Sedimentation in Colloid-Polymer Mixtures," P. Tong, in Proceedings of the Third Microgravity Fluid Physics Conference, NASA Conference Publication 3338, p. 413 (1996).
(10) "Recent Velocity Measurements in Turbulent Convection," P. Tong and K.-Q. Xia, in Flow at Ultra-High Reynolds and Rayleigh Numbers, edited by R. J. Donnelly and K. R. Sreenivasan, p. 258 (Springer-Verlag, New York, 1998).
(11) “Sedimentation of Colloidal Particles through a Polymer Solution,” P. Tong and X. Ye, in Introduction of Soft Matter Physics, edited by K.-Q. Lu and J.-X. Liu (in Chinese), p. 473 (Peking University Press, Peking, 2006).

Books:
Colloid-Polymer Interactions, Edited by P. L. Dubin and P. Tong (American Chemical Society Symposium Series Vol. 532, 1993).

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Last Updated: January 05, 2007. This page was prepared by Penger Tong.