Slow dynamics of a confined supercooled binary mixture II: Q space analysis

Abstract

We report the analysis in the wavevector space of the density correlator of a Lennard Jones binary mixture confined in a disordered matrix of soft spheres upon supercooling. In spite of the strong confining medium the behavior of the mixture is consistent with the Mode Coupling Theory predictions for bulk supercooled liquids. The relaxation times extracted from the fit of the density correlator to the stretched exponential function follow a unique power law behavior as a function of wavevector and temperature. The von Schweidler scaling properties are valid for an extended wavevector range around the peak of the structure factor. The parameters extracted in the present work are compared with the bulk values obtained in literature.

8 pages with 8 figures. RevTeX. Accepted for publication in Phys. Rev. E

References in corpus (12)

• Testing Mode-Coupling Theory for a Supercooled Binary Lennard-Jones Mixture I: The van Hove Correlation Function
• String-like Clusters and Cooperative Motion in a Model Glass-Forming Liquid
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• Slow dynamics of a confined supercooled binary mixture: direct space analysis
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Cited by in corpus (10)

• Liquid-glass transition of a fluid confined in a disordered porous matrix: A mode-coupling theory
• Relaxation Scenarios in a Mixture of Large and Small Spheres: Dependence on the Size Disparity
• Mode-coupling theory for the slow collective dynamics of fluids adsorbed in disordered porous media
• Anomalous Dynamic Arrest in a Mixture of Big and Small Particles
• Tagged-particle dynamics in a fluid adsorbed in a disordered porous solid: interplay between the diffusion-localization and liquid-glass transitions
• Impact of random obstacles on the dynamics of a dense colloidal fluid
• Statistical mechanics of homogeneous partly pinned fluid systems
• Liquid-glass transition of confined fluids: Some insights from a mode-coupling theory
• Mode coupling behavior of a Lennard Jones binary mixture: a comparison between bulk and confined phases
• Inherent Structures and Kauzmann Temperature of Confined Liquids