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题名: Moderate point: Balanced entropy and enthalpy contributions in soft matter
作者: He, BJ;  Wang, YT
刊名: CHINESE PHYSICS B
出版日期: 2017
卷号: 26, 期号:3, 页码:30506
关键词: moderate point ;  balanced entropy ;  enthalpy contribution
学科分类: Physics
DOI: http://dx.doi.org/10.1088/1674-1056/26/3/030506
通讯作者: Wang, YT (reprint author), Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: Various soft materials share some common features, such as significant entropic effect, large fluctuations, sensitivity to thermodynamic conditions, and mesoscopic characteristic spatial and temporal scales. However, no quantitative definitions have yet been provided for soft matter, and the intrinsic mechanisms leading to their common features are unclear. In this work, from the viewpoint of statistical mechanics, we show that soft matter works in the vicinity of a specific thermodynamic state named moderate point, at which entropy and enthalpy contributions among substates along a certain order parameter are well balanced or have a minimal difference. Around the moderate point, the order parameter fluctuation, the associated response function, and the spatial correlation length maximize, which explains the large fluctuation, the sensitivity to thermodynamic conditions, and mesoscopic spatial and temporal scales of soft matter, respectively. Possible applications to switching chemical bonds or allosteric biomachines determining their best working temperatures are also briefly discussed.
类目[WOS]: Physics, Multidisciplinary
关键词[WOS]: MOLECULAR-DYNAMICS SIMULATIONS ;  IONIC LIQUIDS ;  POLYGLUTAMINE AGGREGATION ;  DEPLETION FORCES ;  WIDOM LINE ;  COMPENSATION ;  PERTURBATION ;  TRANSITION ;  PRESSURE ;  SYSTEMS
项目资助者: National Basic Research Program of China [2013CB932804] ;  National Natural Science Foundation of China [11274319, 11421063]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/22190
Appears in Collections:理论物理所计算集群成果_计算集群论文2017

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Recommended Citation:
He, BJ,Wang, YT. Moderate point: Balanced entropy and enthalpy contributions in soft matter[J]. CHINESE PHYSICS B,2017,26(3):30506.
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