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Water near hydrophobic surfaces is like that at a liquid-vapor interface, where fluctuations in water density are substantially enhanced compared to that in bulk water. Here we use molecular simulations with specialized sampling techniques…

The hydrophobic interaction, often combined with the hydrophilic or ionic interactions, makes the behavior of aqueous solutions very rich and plays an important role in biological systems. Theoretical and computer simulation studies haven…

软凝聚态物质 · 物理学 2024-11-05 Hidefumi Naito , Tomonari Sumi , Kenichiro Koga

Interfaces are a most common motif in complex systems. To understand how the presence of interfaces affect hydrophobic phenomena, we use molecular simulations and theory to study hydration of solutes at interfaces. The solutes range in size…

软凝聚态物质 · 物理学 2014-09-05 Amish J. Patel , Patrick Varilly , Sumanth N. Jamadagni , Hari Acharya , Shekhar Garde , David Chandler

Hydrophobic eutectic solvents (HES) are emerging as sustainable alternatives to conventional organic solvents for the extraction of molecular pollutants from water. Yet, their selectivity remains poorly understood, hindering the predictive…

化学物理 · 物理学 2026-04-27 S. Gomez , U. Ali , A. Muroni , A. Mele , M. E. Di Pietro , T. Giovannini

Based on recent studies on hydrophobic interactions, it is devoted to investigate the directional nature of hydrophobic interactions. It means that the hydrophobic interactions are dependent on the relative orientations as the solutes tend…

软凝聚态物质 · 物理学 2021-05-19 Qiang Sun

The mechanism of cold- and pressure-denaturation are matter of debate. Some models propose that when denaturation occurs more hydrogen bonds between the molecules of hydration water are formed. Other models identify the cause in the density…

生物物理 · 物理学 2010-11-17 Valentino Bianco , Svilen Iskrov , Giancarlo Franzese

Microscopic formula to describe the entropy of biomolecular solutions are derived based on the Gibbs formula of entropy, and the generalized Langevin theory combined with the RISM/3D-RISM theory. Two formula are derived: one is concerned…

统计力学 · 物理学 2023-03-02 Fumio Hirata

Hydration of hydrophobic solutes in water is the cause of different phenomena, including the hydrophobic heat-capacity anomaly, which are not yet fully understood. Because of its topicality, there has recently been growing interest in the…

软凝聚态物质 · 物理学 2009-11-10 Susanne Moelbert , Paolo De Los Rios

Water clusters are known to form through hydrogen bonding. However, this study shows that the formation of very small water clusters significantly deviates from this mechanism and instead involves both hydrogen bonding and electron…

原子与分子团簇 · 物理学 2013-12-17 Bo Wang , Minsi Xin , Xing Dai , Ruixia Song , Yan Meng , Zhigang Wang , Ruiqin Zhang

We investigate the curvature-dependence of water dynamics in the vicinity of hydrophobic spherical solutes using molecular dynamics simulations. For both, the lateral and perpendicular diffusivity as well as for H-bond kinetics of water in…

软凝聚态物质 · 物理学 2016-01-22 R. Gregor Weiß , Matthias Heyden , Joachim Dzubiella

The interface between hemoglobin (Hb) and its environment, in particular water, is of great physiological relevance. Here, results from {\it in vitro}, {\it in vivo}, and computational experiments (molecular dynamics simulations) are…

化学物理 · 物理学 2021-10-08 Markus Meuwly , Martin Karplus

Water and water-mediated interactions determine thermodynamic and kinetics of protein folding, protein aggregation and self-assembly in confined spaces. To obtain insights into the role of water in the context of folding problems, we…

软凝聚态物质 · 物理学 2015-05-28 S. Vaitheeswaran , Jie Chen , D. Thirumalai

Liquid water, at ambient conditions, has short-range density correlations which are well known in literature. Surprisingly, large scale molecular dynamics simulations reveal an unusually long-distance correlation in `longitudinal' part of…

软凝聚态物质 · 物理学 2013-05-29 J. M. Pradeep Kanth , Satyavani Vemparala , Ramesh Anishetty

The physical nature and the correct definition of hydrogen bond (H-bond) are considered.\,\,The influence of H-bonds on the thermodynamic, kinetic, and spectroscopic properties of water is analyzed.\,\,The conventional model of H-bonds as…

化学物理 · 物理学 2015-09-02 I. V. Zhyganiuk , M. P. Malomuzh

We present results from extensive molecular dynamics simulations of collapse transitions of hydrophobic polymers in explicit water focused on understanding effects of lengthscale of the hydrophobic surface and of attractive interactions on…

统计力学 · 物理学 2007-05-23 Manoj V. Athawale , Gaurav Goel , Tuhin Ghosh , Thomas M. Truskett , Shekhar Garde

Hydrogen-bond forms a pair of asymmetric, coupled, H-bridged oscillators with ultra-short-range interactions and memory. hydrogen bond cooperative relaxation and the associated binding electron entrapment and nonbonding electron…

软凝聚态物质 · 物理学 2015-01-16 Chang Q Sun

We present an overview of the recent progress that has been made in understanding the origin of hydrophobic interactions. We discuss the different character of the solvation behavior of apolar solutes at small and large length scales. We…

软凝聚态物质 · 物理学 2009-11-07 Pieter Rein ten Wolde

Disordered hyperuniform structures are locally random while uniform like crystals at large length scales. Recently, an exotic hyperuniform fluid state was found in several non-equilibrium systems, while the underlying physics remains…

软凝聚态物质 · 物理学 2019-11-14 Qunli Lei , Ran Ni

The most general description of the classical world is in terms of local densities (such as number, momentum, energy), and these typically evolve according to evolution equations of hydrodynamic form. To explain the emergent classicality of…

量子物理 · 物理学 2007-05-23 J. J. Halliwell

Molecular dynamics simulations have revealed a dramatic increase, with increasing temperature, of the amplitude of electrostatic fluctuations caused by water at the active site of metalloprotein plastocyanin. The increased breadth of…

生物物理 · 物理学 2009-11-13 David N. LeBard , Dmitry V. Matyushov