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相关论文: Dynamics of Water Confined in Mesopores with Varia…

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The interfacial structure and dynamics of water in a microscopically confined geometry is imaged in three dimensions and on millisecond time scales. We developed a 3D wide-field second harmonic microscope that employs structured…

化学物理 · 物理学 2017-07-26 Carlos Macias-Romero , Igor Nahalka , Halil I. Okur , Sylvie Roke

ODNP (Overhauser Dynamic Nuclear Polarization) detects an experimental measurable associated directly with translational motion of water at the nanoscale, a quantity that few other methods can detect. This study offers a unique insight into…

软凝聚态物质 · 物理学 2024-10-29 Alec A. Beaton , John M. Franck

This study addresses the influence of internal liquid dynamics on liquid-solid friction. Taking advantage of the wide range of relaxation timescales in supercooled liquids, we use a tuning-fork-based AFM to measure the slippage of…

软凝聚态物质 · 物理学 2024-02-05 Mathieu Lizée , Guilhem Mariette , Baptiste Coquinot , Lydéric Bocquet , Alessandro Siria

We investigate the behavior of colloidal suspensions with different volume fractions confined between parallel walls under a range of steady shears. We model the particles using molecular dynamics (MD) with full hydrodynamic interactions…

软凝聚态物质 · 物理学 2014-09-18 Frances E. Mackay , Kyle Pastor , Mikko Karttunen , Colin Denniston

RMs (reverse micelles) provide a controlled system for studying the unique structural and dynamic behaviors of confined water, thus gaining a general insight into the behavior or water under confinement and at interfaces. This study employs…

软凝聚态物质 · 物理学 2024-10-15 Romana Shathy , Alexandria Guinness , John M Franck

We use Molecular Dynamics simulations to study how the nanopore and the fluid structures affects the dynamic, thermodynamic and structural properties of a confined anomalous fluid. The fluid is modeled using an effective pair potential…

软凝聚态物质 · 物理学 2015-06-23 Leandro B. Krott , José Rafael Bordin , Ney Marçal Barraz , Marcia C. Barbosa

We have investigated thermodynamic and dynamic properties as well as the dielectric constant of water-metha\-nol model mixtures in the entire range of composition by using constant pressure molecular dynamics simulations at ambient…

软凝聚态物质 · 物理学 2015-12-25 E. Galicia-Andrés , H. Dominguez , L. Pusztai , O. Pizio

Water provides the driving force for the assembly and stability of many cellular components. Despite its impact on biological functions, a nanoscale understanding of the relationship between its structure and dynamics under soft confinement…

软凝聚态物质 · 物理学 2021-01-18 Fausto Martelli , Jason Crain , Giancarlo Franzese

Hydrodynamic interactions in a suspension of spherical particles confined between two parallel planar walls are studied under creeping-flow conditions. The many-particle friction matrix in this system is evaluated using our novel numerical…

流体动力学 · 物理学 2009-11-11 S. Bhattacharya , J. Blawzdziewicz , E. Wajnryb

Poly(N-isopropylacrylamide) (PNIPAM) is a synthetic polymer that is widely studied for its thermoresponsive character. However, recent works also reported evidence of a low temperature (protein-like) dynamical transition around 225 K in…

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

In this work we used a generalized Frenkel-Kontorova model to study the mobility of water molecules inside carbon nanotubes with small radius at low temperatures. Our simulations show that the mobility of the confined water decreases…

软凝聚态物质 · 物理学 2017-07-25 Patricia Ternes , Alejandro Mendoza-Coto , Evy Salcedo

In this work we present the dielectric behavior of water with a novel flexible model that improved all three sites water models Different concentrations of the ionic liquid 1- butyl-3-methylimidazolium [bmim]…

We present a neutron scattering analysis of the density and the static structure factor of confined methanol at various temperatures. Confinement is performed in the cylindrical pores of MCM-41 silicates with pore diameters D=24 angstrom…

软凝聚态物质 · 物理学 2009-11-10 Denis Morineau , Regis Guegan , Yongde Xia , Christiane Alba-Simionesco

We investigate the dynamics of water confined in soft ionic nano-assemblies, an issue critical for a general understanding of the multi-scale structure-function interplay in advanced materials. We focus in particular on hydrated…

材料科学 · 物理学 2017-08-23 Quentin Berrod , Samuel Hanot , Armel Guillermo , Stefano Mossa , Sandrine Lyonnard

Water and silicon are chemically dissimilar substances with common physical properties. Their liquids display a temperature of maximum density, increased diffusivity on compression, they form tetrahedral crystals and tetrahedral amorphous…

软凝聚态物质 · 物理学 2008-09-18 Valeria Molinero , Emily B. Moore

Mg-MOF-74 is a metal-organic framework (MOF) that exhibits a high capacity for CO$_2$ adsorption. Given the importance of CO$_2$ confinement in Mg-MOF-74 for capture and storage applications, it is important to understand the structural and…

化学物理 · 物理学 2022-12-09 I. Dhiman , M. C. Berg , David R. Cole , Siddharth Gautam

Responsive poly-N-isopropylacrylamide-based microgels are commonly used as model colloids with soft repulsive interactions. It has been shown that the microgel-microgel interaction in solution can be easily adjusted by varying the…

软凝聚态物质 · 物理学 2021-09-06 Steffen Bochenek , Cathy E. McNamee , Michael Kappl , Hans Juergen Butt , Walter Richtering

We have studied the composition dependence of density of liquid water-DMSO mixtures at different temperatures by using the isobaric-isothermal (NPT) molecular dynamics computer simulations. The non-polarizable semi-flexible, P1 and P2…

软凝聚态物质 · 物理学 2023-01-05 M. Aguilar , H. Dominguez , O. Pizio

Herein, thermal, dynamical properties, host-guest intermolecular interactions, and wettability of a series of monohydroxy phenyl-substituted alcohols (PhAs) infiltrated into native and silanized silica mesopores (d = 4 nm) were investigated…

介观与纳米尺度物理 · 物理学 2023-12-06 Natalia Soszka , Magdalena Tarnacka , Barbara Hachula , Monika Geppert-Rybczynska , Krystian Prusik , Kamil Kaminski