Structure, compressibility factor, and dynamics of highly size-asymmetric binary hard-disk liquids
文献类型：期刊论文
| 作者 | Xu WS ; Sun ZY ; An LJ |
| 刊名 | journal of chemical physics
 |
| 出版日期 | 2012 |
| 卷号 | 137期号:10页码:文献号：104509 |
| 关键词 | MODE-COUPLING THEORY LENNARD-JONES MIXTURE GLASS-TRANSITION SPHERE MIXTURES SUPERCOOLED LIQUIDS SELF-DIFFUSION PHASE-BEHAVIOR SIMULATIONS PARTICLES PACKINGS |
| ISSN号 | 0021-9606 |
| 通讯作者 | sun zy |
| 中文摘要 | by using event-driven molecular dynamics simulation, we investigate effects of varying the area fraction of the smaller component on structure, compressibility factor, and dynamics of the highly size-asymmetric binary hard-disk liquids. we find that the static pair correlations of the large disks are only weakly perturbed by adding small disks. the higher-order static correlations of the large disks, by contrast, can be strongly affected. accordingly, the static correlation length deduced from the bond-orientation correlation functions first decreases significantly and then tends to reach a plateau as the area fraction of the small disks increases. the compressibility factor of the system first decreases and then increases upon increasing the area fraction of the small disks and separating different contributions to it allows to rationalize this non-monotonic phenomenon. furthermore, adding small disks can influence dynamics of the system in quantitative and qualitative ways. for the large disks, the structural relaxation time increases monotonically with increasing the area fraction of the small disks at low and moderate area fractions of the large disks. in particular, "reentrant" behavior appears at sufficiently high area fractions of the large disks, strongly resembling the reentrant glass transition in short-ranged attractive colloids and the inverted glass transition in binary hard spheres with large size disparity. by tuning the area fraction of the small disks, relaxation process for the small disks shows concave-to-convex crossover and logarithmic decay behavior, as found in other binary mixtures with large size disparity. moreover, diffusion of both species is suppressed by adding small disks. long-time diffusion for the small disks shows power-law-like behavior at sufficiently high area fractions of the small disks, which implies precursors of a glass transition for the large disks and a localization transition for the small disks. therefore, our results demonstrate the generic dynamic features in highly size-asymmetric binary mixtures. (c) 2012 american institute of physics. [http://dx.doi.org/10.1063/1.4751546] |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000309100400036 |
| 公开日期 | 2013-04-23 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/47945]  |
| 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. Structure, compressibility factor, and dynamics of highly size-asymmetric binary hard-disk liquids[J]. journal of chemical physics,2012,137(10):文献号：104509. |
| APA | Xu WS,Sun ZY,&An LJ.(2012).Structure, compressibility factor, and dynamics of highly size-asymmetric binary hard-disk liquids.journal of chemical physics,137(10),文献号：104509. |
| MLA | Xu WS,et al."Structure, compressibility factor, and dynamics of highly size-asymmetric binary hard-disk liquids".journal of chemical physics 137.10(2012):文献号：104509. |
入库方式： OAI收割
来源：长春应用化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。