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We have investigated the dynamics of water confined in mesostructured porous silicas (SBA-15, MCM-41) and four periodic mesoporous organosilicas (PMOs) by dielectric relaxation spectroscopy. The influence of water-surface interaction has…

Interfacial interactions significantly alter the fundamental properties of water confined in mesoporous structures, with crucial implications for geological, physicochemical, and biological processes. Herein, we focused on the effect of…

In this paper we present a review on our recent experimental investigations into the phase behavior of the deeply cooled water confined in a nanoporous silica material, MCM-41, with elastic neutron scattering technique. Under such strong…

软凝聚态物质 · 物理学 2016-12-13 Zhe Wang , Kanae Ito , Sow-Hsin Chen

We report here a molecular dynamics simulation study on water and aqueous LiCl solutions confined in 1.6 nm cylindrical pores of silica to investigate a dynamical cross-over, observed earlier experimentally, wherein LiCl slows down confined…

软凝聚态物质 · 物理学 2025-04-10 Siddharth Gautam , Lukas Vlcek , Eugene Mamontov , David Cole

The structure of water confined in MCM41 silica cylindrical pores is studied to determine if confined water really is simply a version of the bulk liquid which can be substantially supercooled without crystallisation. A combination of total…

软凝聚态物质 · 物理学 2013-09-27 A K Soper

We use $^2$H NMR to study the rotational motion of supercooled water in silica pores of various diameters, specifically, in the MCM-41 materials C10, C12, and C14. Combination of spin-lattice relaxation, line-shape, and stimulated-echo…

软凝聚态物质 · 物理学 2015-06-22 Matthias Sattig , Stefan Reutter , Franz Fujara , Mayke Werner , Gerd Buntkowsky , Michael Vogel

A molecular dynamics simulation of water confined in a silica pore is performed in order to compare it with recent experimental results on water confined in porous Vycor glass at room temperature. A cylindrical pore of 40 A is created…

统计力学 · 物理学 2009-10-31 M. Rovere , M. A. Ricci , D. Vellati , F. Bruni

The temperature dependence of the structure of water confined in hydrophilic mesostructured porous silica (MCM-41) and hydrophobic benzene-bridged periodic mesoporous organosilicas (PMO) is studied by Raman vibrational spectroscopy. For…

软凝聚态物质 · 物理学 2022-02-01 Benjamin Malfait , Alain Moréac , Aïcha Jani , Ronan Lefort , Patrick Huber , Michael Fröba , Denis Morineau

A molecular dynamics simulation of SPC/E water confined in a Silica pore is presented. The pore has been constructed to reproduce the average properties of a pore of Vycor glass. Due to the confinement and to the presence of a strong…

统计力学 · 物理学 2007-05-23 P. Gallo , M. Rovere

When water molecules are confined to nanoscale spacings, such as in the nanometer size pores of activated carbon fiber (ACF), their freezing point gets suppressed down to very low temperatures ($\sim$ 150 K), leading to a metastable liquid…

软凝聚态物质 · 物理学 2015-06-23 S. O. Diallo , L. Vlcek , E. Mamontov , J. K. Keum , Jihua Chen , J. S. Hayes , A. A. Chialvo

We use molecular dynamics computer simulations and nuclear magnetic resonance experiments to investigate the dynamics of water at interfaces of molecular roughness and low mobility. We find that, when approaching such interfaces, the…

软凝聚态物质 · 物理学 2014-07-22 Markus Rosenstihl , Kerstin Kämpf , Felix Klameth , Matthias Sattig , Michael Vogel

Using molecular dynamics simulations we study the dynamics of a water-like TIP5P model of water in hydrophilic and hydrophobic confinement. We find that in case of extreme nanocofinement such that there is only one molecular layer of water…

软凝聚态物质 · 物理学 2010-05-14 Pradeep Kumar

Molecular dynamics results on water confined in a silica pore in the low hydration regime are presented. Strong layering effects are found due to the hydrophilic character of the substrate. The local properties of water are studied as…

软凝聚态物质 · 物理学 2009-11-07 P. Gallo , M. Rapinesi , M. Rovere

Molecular dynamics simulations are carried out to explore the dynamical crossover phenomenon in strongly confined and mildly supercooled water in graphene oxide nanopores. In contrast to studies where confinement is used to study the…

软凝聚态物质 · 物理学 2020-03-09 Rajasekaran M , K. Ganapathy Ayappa

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 mobility of water molecules confined in a silica pore is studied by computer simulation in the low hydration regime, where most of the molecules reside close to the hydrophilic substrate. A layer analysis of the single particle dynamics…

统计力学 · 物理学 2009-11-10 P. Gallo , M. Rovere

Dynamical mechanical analysis (DMA)(f=0.2 - 100 Hz) is used to study the dynamics of confined water in mesoporous Gelsil (2.6 nm and 5 nm pores) and Vycor (10 nm) in the temperature range from T=80 K to 300 K. Confining water into nanopores…

软凝聚态物质 · 物理学 2020-05-27 V. Soprunyuk , W. Schranz , P. Huber

We present a Molecular Dynamics study of the single particle dynamics of supercooled water confined in a silica pore. Two dynamical regimes are found: close to the hydrophilic substrate molecules are below the Mode Coupling crossover…

统计力学 · 物理学 2009-10-31 P. Gallo , M. Rovere , E. Spohr

An accurate description of the structure and dynamics of interfacial water is essential for phospholipid membranes, since it determines their function and their interaction with other molecules. Here we consider water confined in stacked…

软凝聚态物质 · 物理学 2018-11-16 Sotiris Samatas , Carles Calero , Fausto Martelli , Giancarlo Franzese

Large scale molecular dynamics simulations are used to investigate the structural and dynamical modifications of supercooled water when confined inside an hydrophilic nanopore. We then investigate the evolution of the auto-organization of…

无序系统与神经网络 · 物理学 2015-06-25 Victor Teboul
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