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To comprehend the complexities of the ice-water interface, we perform a study that attempts to correlate the altered dynamics of water to its perturbed structure at, and due to, the interface. The deviation from bulk values of structural…

软凝聚态物质 · 物理学 2019-08-02 Saumyak Mukherjee , Sayantan Mondal , Biman Bagchi

AIMD results on a liquid krypton-water system are compared to recent XAFS results for the radial hydration structure for a Kr atom in liquid water solution. The comparisons with the liquid solution results are satisfactory and significantly…

生物物理 · 物理学 2007-05-23 Henry S. Ashbaugh , D. Asthagiri , Lawrence R. Pratt , Susan B. Rempe

The origin of enhanced reactivity in aqueous microdroplets remains debated, with interfacial electric fields (IEFs) often invoked as catalytic drivers. Here, we provide a quantum-mechanical, spatially resolved characterization of the…

Copper oxide nanostructures with spherical (0D), needle (1D) and hierarchical cauliflower (3D) morphologies are used to demonstrate superhydrophobic, superoleophobic and slippery behavior. These nanostructures are synthesized on galvanized…

软凝聚态物质 · 物理学 2016-02-19 Sanjeev Kumar Ujjain , Pritam Kumar Roy , Sumana Kumar , Subhash Singha , Krishnacharya Khare

Using fluorescence microscopy we study the adsorption of single latex microparticles at a water/water interface between demixing aqueous solutions of polymers, generally known as a water-in-water emulsion. Similar microparticles at the…

软凝聚态物质 · 物理学 2018-05-23 Louis Keal , Carlos E. Colosqui , Hans Tromp , Cecile Monteux

Mesoscale water-hydrophobic interfaces are of fundamental importance in multiple disciplines, but their molecular properties have remained elusive for decades due to experimental complications and alternate theoretical explanations.…

化学物理 · 物理学 2024-05-06 Lixue Shi , R. Allen LaCour , Xiaoqi Lang , Joseph P. Heindel , Teresa Head-Gordon , Wei Min

Thermodynamics tells us to expect underwater contact between two hydrophobic surfaces to result in stronger adhesion compared to two hydrophilic surfaces. However, presence of water changes not only energetics, but also the dynamic process…

软凝聚态物质 · 物理学 2022-11-22 Mengyue Sun1 , Nityanshu Kumar1 , Ali Dhinojwala , Hunter King

The atomic scale insights into the interaction of water with oxide surface are essential for elucidating the mechanism of physiochemical processes in various scientific and practical fields, since the water is ubiquitous and coats…

化学物理 · 物理学 2017-12-12 Zhenjun Song , Qiang Wang

The role of solute attractive forces on hydrophobic interactions is studied by coordinated development of theory and simulation results for Ar atoms in water. We present a concise derivation of the local molecular field (LMF) theory for the…

化学物理 · 物理学 2015-10-28 M. I. Chaudhari , S. B. Rempe , D. Asthagiri , L. Tan , L. R. Pratt

Density functional theory (DFT) is used to rationalize magnetic parameters of hydrated electron trapped in alkaline glasses as observed using Electron Paramagnetic Resonance (EPR) and Electron Spin Echo Envelope Modulation (ESEEM)…

综合物理 · 物理学 2016-09-28 I. A. Shkrob

Water shapes and defines the properties of biological systems. Therefore, understanding the nature of the mutual interaction between water and biological systems is of primary importance for a proper assessment of biological activity and…

软凝聚态物质 · 物理学 2021-01-18 Fausto Martelli , Carles Calero , Giancarlo Fanzese

ReaxFF is a computationally efficient model for reactive molecular dynamics simulations, which has been applied to a wide variety of chemical systems. When ReaxFF parameters are not yet available for a chemistry of interest, they must be…

Neutron scattering and molecular dynamics studies were performed on a concentrated aqueous tetramethylammonium (TMA) chloride solution to gain insight into the hydration shell structure of TMA, which is relevant for understanding its…

We study the structure and morphological changes of fluids that are in contact with solid composites formed by alternating and microscopically wide stripes of two different materials. One type of the stripes interacts with the fluid via…

统计力学 · 物理学 2019-12-30 Martin Pospíšil , Martin Láska , Alexandr Malijevský

ReaxFF provides a method to model reactive chemical systems in large-scale molecular dynamics simulations. Here, we developed ReaxFF parameters for phosphorus and hydrogen to give a good description of the chemical and mechanical properties…

计算物理 · 物理学 2017-07-31 Hang Xiao , Xiaoyang Shi , Feng Hao , Xiangbiao Liao , Yayun Zhang , Xi Chen

One of the most promising applications in nanoscience is the design of new materials to improve water permeability and selectivity of nanoporous membranes. Understanding the molecular architecture behind these fascinating structures and how…

软凝聚态物质 · 物理学 2021-09-10 João P. K. Abal , Rodrigo F. Dillenburg , Mateus H. Köhler , Marcia C. Barbosa

The morphology and transport properties of thin films of the ionomer Nafion, with thicknesses on the order of the bulk cluster size, have been investigated as a model system to explain the anomalous behaviour of catalyst/electrode-polymer…

材料科学 · 物理学 2018-01-16 Peter Vanya , Jonathan Sharman , James A. Elliott

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 water/electrode interface under an applied bias potential is a challenging out-of-equilibrium phenomenon, which is difficult to accurately model at the atomic scale. In this study, we employ a combined approach of Density Functional…

We have studied by Molecular Dynamics computer simulations the dynamics of water confined in ionic surfactants phases, ranging from well ordered lamellar structures to micelles at low and high water loading, respectively. We have analysed…

软凝聚态物质 · 物理学 2016-03-23 Samuel Hanot , Sandrine Lyonnard , Stefano Mossa