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Sun, XY; Li, Y; Ma, YQ; Zhang, ZX
Direct observation of melting in a two-dimensional driven granular system
Source PublicationSCIENTIFIC REPORTS
Language英语
KeywordBOND-ORIENTATIONAL ORDER 2 DIMENSIONS TRANSITION LATTICE DISKS GAS
AbstractMelting is considered to be one of the most fundamental problems in physical science. Generally, dimensionality plays an important role in melting. In three-dimension, it's well known that a crystal melts directly into a liquid via a first-order transition. In two-dimension (2D), however, the melting process has been widely debated whether it is a first-order transition or a two-step transition with an intermediate hexatic phase. Experimentally 2D melting has been intensively studied in equilibrium systems such as molecular and colloidal crystals, but rarely been explored in non-equilibrium system such as granular materials. In this paper, we experimentally studied the 2D melting in a driven granular model system at single particle level using video recording and particle tracking techniques. Measurements of orientational/translational correlation functions show evidences that the melting is a two-step transition. A novel concept of orientational/translational susceptibilities enable us to clearly resolve the intermediate hexatic phase. Our results are in excellent agreement with the two-step melting scenario predicted by KTHNY theory, and demonstrate that the KTHNY melting scenario can be extended to non-equilibrium systems.
2016
Volume6Pages:24056
Subject AreaScience & Technology - Other Topics
DOIhttp://dx.doi.org/10.1038/srep24056
Indexed BySCI
Funding OrganizationNational Basic Research Program of China [2012CB821500] ; National Natural Science Foundation of China [21522404, 21174101, 11574222] ; Project for Jiangsu Scientific and Technological Innovation Team ; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/23102
Collection理论物理所科研产出_SCI论文
Affiliation1.Soochow Univ, Ctr Soft Condensed Matter Phys & Interdisciplinar, Suzhou 215006, Peoples R China
2.Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China
3.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
4.Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Sun, XY,Li, Y,Ma, YQ,et al. Direct observation of melting in a two-dimensional driven granular system[J]. SCIENTIFIC REPORTS,2016,6:24056.
APA Sun, XY,Li, Y,Ma, YQ,&Zhang, ZX.(2016).Direct observation of melting in a two-dimensional driven granular system.SCIENTIFIC REPORTS,6,24056.
MLA Sun, XY,et al."Direct observation of melting in a two-dimensional driven granular system".SCIENTIFIC REPORTS 6(2016):24056.
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