Invited SpeakersProfile Details

Prof. Ping Sheng
Prof. Ping Sheng Hong Kong University of Science and Technology, China

Biography

​Ping Sheng is the William Mong Professor of Nanoscience and Chair Professor of Physics at the Hong Kong University of Science and Technology.  He obtained his BSc in Physics from the California Institute of Technology, and PhD in Physics from Princeton University in 1971.  After a stay at the Institute for Advanced Study, Princeton, New Jersey, Ping joined RCA David Sarnoff Research Center in 1973 as a member of the technical staff.  In 1979 he joined the Exxon Corporate Research Lab, where he served as the head of the theory group during 1982-86.  In 1994 Ping joined the HKUST as a professor of physics and served as the head of the physics department from 1999 to 2008.

Ping is a Fellow of the American Physical Society and a Member of the Asia Pacific Academy of Materials. He is currently a Division Associate Editor of Physical Review Letters and also a member of the editorial board of New Journal of Physics, and an Executive Editor of Solid State Communications.  He was awarded Technology Leader of the Year by the Sing Tao Group in 2002, the Brillouin Medal by the International Phononics Society in 2013 and the National Natural Science Award (second class) by the State Council of the People's Republic of China in 2014.

Ping has published more than 460 papers with a total of over 21,000 citations, with an h-index of 79 (by Google Scholar). He has presented over 300 keynote, plenary or invited talks at international meetings and conferences.  His current research interests include acoustic metamaterials, superconductivity in carbon nanotubes, nanostructured graphene, giant electrorheological fluids, fluid-solid interfacial phenomena, and effective medium theory of composites.

All sessions by Prof. Ping Sheng

  • Day 2Tuesday, February 21st
Session 4: Advanced Membranes/Processes II
2:00 pm

Formation of Pure Water Droplets Across the Contact Line & Their Fast Transport on Carbon Surfaces

In recent experiments performed by the group of Prof. Zhiping Lai at KAUST, it was found that there can be high-flux water desalination effect in nanoporous carbon composite membrane, involving a salt water-air meniscus intersecting with carbon nanofibers. In order to explain the large flux and the desalination effect, large scale molecular dynamics (MD) simulation is performed to show the formation of pure water droplets from NaCl solution across the contact line region. Here the contact line is defined to be the intersection of the meniscus with the carbon surface. The size distribution of the equilibrium pure water droplets on carbon surfaces is obtained. The pure water droplets are shown to be from the surface freshwater layer, and hence does not involve latent heat as required in membrane distillation. In addition, the diffusion process of the droplets of different size on the carbon surface is monitored so as to obtain the corresponding surface diffusivity. From such information the surface diffusion flux can be obtained by the linear response theory. The simulation results provide the underlying mechanism for the observed high-flux water desalination in nanoporous carbon composite membrane.

Level 0, between bld. 4 and 5 14:00 - 14:30 Details