CV

Yilong HAN    韓一龍

Professor, Department of Physics

The Hong Kong University of Science and Technology

Office:  Room 4447,  Tel: (852) 2358-7492

Lab:   Room 4141,  Tel: (852) 2358-7524

Fax: (852) 2358 1652

E-Mail:  yilong(at)ust.hk

Professor (2017- present)

Associate Professor (2013 - 2017)

Assistant Professor (2007 - 2013) Department of Physics, HKUST, Hong Kong

Postdoc 2004 - 2007  University of Pennsylvania, USA

Ph.D. 1998 - 2003 University of Chicago, USA

B.S. 1994 - 1998 Peking University (Beijing University), China

Research Interests

1. Experimental soft condensed matter physics

microscopic kinetics in various phase transitions using colloids model systems; crystal, amorphous solid and their crossover; surface phenomena of solids; the motions and clusters of novel granular systems.

2. Statistical physics

We apply the complex-network analysis to phase-space studies and discovered that the phase spaces of frustration spin models, lattice gases and spin glasses share some common features. We analytically prove that the spectra of their phase spaces are Gaussian, which represents a new class of network. A math by-product is a one-to-one mapping between 2D jigsaw-puzzle tiling and 3D stack of spheres. We are also interested in configurational temperatures and Brownian motions.

Selected Publications:

• Polymorphic crystalline wetting layers on crystal surfaces, Xipeng Wang*, Bo Li*, Mengmeng Li and Yilong Han*, Nat. Phys., 19, 700-705 (2023)
• Surface premelting and melting of colloidal glasses , Qi Zhang, Wei Li, Kaiyao Qiao, and Yilong Han*, Sci. Adv., 9, eadf1101 (2023)
• Compression-induced polycrystal-glass transition in binary crystals, Huijun Zhang and Yilong Han*, Phys. Rev. X, 8, 041023 (2018)
• Modes of surface premelting in attractive colloidal crystals, Bo Li, Feng Wang, Di Zhou, Yi Peng, Ran Ni, and Yilong Han*, Nature, 531, 485-488 (2016)
• Two-step nucleation mechanisms in solid-solid phase transitions, Yi Peng, Feng Wang, Ziren Wang, Ahemd Alsayed, Zexin Zhang, Arjun Yodh and Yilong Han*, Nature Materials, 14, 101–108 (2015) (cover article)
• Imaging the homogenous nucleation during the melting of superheated colloidal crystals, Ziren Wang, Feng Wang, Yi Peng, Zhongyu Zheng, and Yilong Han*, Science 338, 87-90 (2012)
• Glass transitions in quasi-two-dimensional suspensions of colloidal ellipsoids, Zhongyu Zheng, Feng Wang and Yilong Han*, Phys. Rev. Lett. 107, 065702 (2011) (highlighted by Editor's Suggestion and Physics Viewpoint)
• Phase-Space Networks of the Six-Vertex Model under Different Boundary Conditions, Yilong Han*, Phys. Rev. E 81, 041118 (2010)
• Phase-Space Networks of Geometrically Frustrated Systems Yilong Han, Phys. Rev. E 80, 051102 (2009)
  PPT slides
• Geometric frustration in buckled colloidal monolayers Yilong Han*, Yair Shokef*, Ahmed Alsayed, Peter Yunker, Tom C. Lubensky, and Arjun Yodh, Nature, 456, 898-903 (2008).
• Brownian Motion of an Ellipsoid Yilong Han, Ahmed Alsayed, Maurizio Nobili, Jian Zhang, Tom C. Lubensky*, and Arjun G. Yodh, Science 314, 626-630 (2006)
  
• Configurational temperatures and interactions in charge-stabilized colloid, Y. Han and D. G. Grier  J. Chem. Phys. 122, 064907, 1-14 (2005)