Computer simulation studies of Crystallization under confinement conditions |
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Authors: | Fernando Bresme Luis G Cmara |
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Affiliation: | aDepartment of Chemistry, Imperial College London, Exhibition Road, London, SW7 2AZ, United Kingdom |
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Abstract: | Crystallization under confinement conditions is a very important process in geochemistry and geophysics. Computer simulations of fluids in nanometer scale pore spaces can provide a unique microscopic insight into the structure, dynamics and forces arising from the crystallization process. We discuss in this paper molecular dynamics computer simulations of crystallization in pores of nanometer dimensions. The crystallization pressure due to the freezing of a model of Argon in a nanopore is computed using molecular dynamics simulations. We also investigate the influence of pore geometry in determining the dynamics of confined fluids, as well as mass separation in binary mixtures. It turns out that the pore geometry reveals itself as an important variable, leading to 1) new mechanisms for fast diffusion in confined spaces, and 2) accumulation of solute in specific regions inside the pore. |
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Keywords: | Force of crystallization Computer simulations Confined fluids Diffusion |
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