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Yilong HAN 韓一龍
Professor, Department of Physics
The
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:
(1) Phase-Space Networks of Geometrically Frustrated Systems Yilong Han, Phys. Rev. E 80, 051102 (2009);Phase-Space Networks of the Six-Vertex Model under Different Boundary Conditions, Yilong Han, Phys. Rev. E 81, 041118 (2010) PPT slides https://yilong.people.ust.hk/PhaseSpaceNetworkhomepage
(2) Polymorphic crystalline wetting layers on crystal surfaces, Xipeng Wang*, Bo Li*, Mengmeng Li and Yilong Han*, Nat. Phys. 19, 700 (2023) poster https://yilong.people.ust.hk/PosterISMC2023
(3) 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 (2015) (cover article)
(4) Brownian Motion of an Ellipsoid Yilong Han, Ahmed Alsayed, Maurizio Nobili, Jian Zhang, Tom C. Lubensky*, and Arjun G. Yodh, Science 314, 626 (2006)
(5) Configurational temperature of charge-stabilized colloidal monolayer, Yilong Han and David G. Grier Phys. Rev. Lett. 92, 148301 (2004); Configurational temperatures and interactions in charge-stabilized colloid, Yilong Han and David G. Grier, J. Chem. Phys. 122, 064907 (2005)
(6) Modes of surface premelting in attractive colloidal crystals, Bo Li, Feng Wang, Di Zhou, Yi Peng, Ran Ni, and Yilong Han*, Nature 531, 485 (2016)
(7) Mechanical properties of crystalline-amorphous composites: generalization of Hall-Petch and inverse Hall-Petch behaviors, Zhibin Xu, Mengmeng Li and Yilong Han*, National Science Review 12, nwaf336 (2025)
(8) Surface premelting and melting of colloidal glasses, Qi Zhang, Wei Li, Kaiyao Qiao, and Yilong Han*, Sci. Adv. 9, eadf1101 (2023)
(9) 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 (2012)
(10) 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)
(11) Vortex rings in a constant electric field, Yilong Han and David G. Grier, Nature 424, 267 (2003); erratum Nature 424, 510 (2003) Colloidal Patterns in a Thin Electrolysis Cell I: microscopic cooperative structures, Yilong Han and David G. Grier J. Chem. Phys. 122, 164701 (2005); Colloidal electroconvection in a thin horizontal cell II: bulk electroconvection of water during parallel-plate electrolysis, Yilong Han and David G. Grier, J. Chem. Phys. 125, 144707, (2006); Colloidal electroconvection in a thin horizontal cell. III. Interfacial and transient patterns on electrodes, Y. Han* and D. Grier*, J. Chem. Phys. 137, 014504 (2012)
(12) Compression-induced polycrystal-glass transition in binary crystals, Huijun Zhang and Yilong Han*, Phys. Rev. X 8, 041023 (2018)
