Imaging the homogeneous nucleation during the melting of superheated colloidal crystals

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	Imaging the homogeneous nucleation during the melting of superheated colloidal crystals
	Wang ZR; Wang F; Peng Y; Zheng ZY(郑中玉); Han YL; Han, YL; Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China.
发表期刊	SCIENCE
	2012-10-05
卷号	338 期号:6103 页码:87-90
ISSN	0036-8075
摘要	The nucleation process is crucial to many phase transitions, but its kinetics are difficult to predict and measure. We superheated and melted the interior of thermal-sensitive colloidal crystals and investigated by means of video microscopy the homogeneous melting at single-particle resolution. The observed nucleation precursor was local particle-exchange loops surrounded by particles with large displacement amplitudes rather than any defects. The critical size, incubation time, and shape and size evolutions of the nucleus were measured. They deviate from the classical nucleation theory under strong superheating, mainly because of the coalescence of nuclei. The superheat limit agrees with the measured Born and Lindemann instabilities.
关键词	Phase-transition Stability Limit Catastrophe Science Growth Bulk
学科领域	流体力学
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000309457400058
项目资助者	This work was supported by the Research Grants Council of Hong Kong (General Research Fund 601208 and 601911), and we thank A. Alsayed and A. Yodh for providing the NIPA colloids.
课题组名称	NML空间材料物理力学
论文分区	一类
引用统计	被引频次：141[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/46586
专题	微重力重点实验室
通讯作者	Han, YL; Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China.
推荐引用方式 GB/T 7714	Wang ZR,Wang F,Peng Y,et al. Imaging the homogeneous nucleation during the melting of superheated colloidal crystals[J]. SCIENCE,2012,338,6103,:87-90.
APA	Wang ZR.,Wang F.,Peng Y.,Zheng ZY.,Han YL.,...&Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China..(2012).Imaging the homogeneous nucleation during the melting of superheated colloidal crystals.SCIENCE,338(6103),87-90.
MLA	Wang ZR,et al."Imaging the homogeneous nucleation during the melting of superheated colloidal crystals".SCIENCE 338.6103(2012):87-90.

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