Assembly of body-centered cubic crystals in hard spheres

	Assembly of body-centered cubic crystals in hard spheres
	Xu WS ; Sun ZY ; An LJ
刊名	european physical journal e
	2011
卷号	34 期号:5
关键词	COLLOIDAL CRYSTALS PACKINGS PARALLEL SURFACES GROWTH
ISSN号	1292-8941
通讯作者	xu ws
中文摘要	we investigate the crystallization of monodisperse hard spheres confined by two square patterned substrates (possessing the basic character of the body-centered cubic (bcc) crystal structure) at varying substrate separations via molecular dynamics simulation. through slowly increasing the density of the system, we find that crystallization under the influence of square patterned substrates can set in at lower densities compared with the homogeneous crystallization. as the substrate separation decreases, the density, where crystallization occurs (i.e., pressure drops), becomes small. moreover, two distinct regimes are identified in the plane of bcc particle fraction and density for the separation range investigated. for large substrate separations, the bcc particle fraction displays a local maximum as the density is increased, and the resulting formed crystals have a polycrystalline structure. however, and more importantly, another situation emerges for small substrate separations: the capillary effects (stemming from the presence of two substrates) overwhelm the bulk driving forces (stemming from the spontaneous thermal fluctuations in the bulk) during the densification, eventually resulting in the formation of a defect-free bcc crystal (unstable with respect to the bulk hard-sphere crystals) by using two square patterned substrates.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000291296600002
公开日期	2012-06-11
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/44662]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Xu WS,Sun ZY,An LJ. Assembly of body-centered cubic crystals in hard spheres[J]. european physical journal e,2011,34(5).
APA	Xu WS,Sun ZY,&An LJ.(2011).Assembly of body-centered cubic crystals in hard spheres.european physical journal e,34(5).
MLA	Xu WS,et al."Assembly of body-centered cubic crystals in hard spheres".european physical journal e 34.5(2011).