• 文献标题:   Compounding effects of fluid confinement and surface strain on the wet-dry transition, thermodynamic response, and dynamics of water-graphene systems
  • 文献类型:   Article
  • 作  者:   CHIALVO AA, VLCEK L, CUMMINGS PT
  • 作者关键词:   confined water, thermodynamic response function, graphenewater interface, modified graphene surface, hydrophobic solidfluid interaction, anomalous diffusivity
  • 出版物名称:   MOLECULAR PHYSICS
  • ISSN:   0026-8976 EI 1362-3028
  • 通讯作者地址:   Oak Ridge Natl Lab
  • 被引频次:   2
  • DOI:   10.1080/00268976.2014.968228
  • 出版年:   2015

▎ 摘  要

We studied the link between the water-mediated (tensile or compressive) strain-driven hydration free energy changes in the association process involving finite-size graphene surfaces, the resulting water-graphene interfacial behaviour, and the combined effect of surface strain and fluid confinement on the thermodynamic response functions and the dynamics of water. We found that either small surface corrugation (compressive strain) or surface stretching (tensile strain) is able to enhance significantly the water-graphene hydrophobicity relative to that of the unstrained surface, an effect that exacerbates the confinement impact on the isothermal compressibility and isobaric thermal expansivity of confined water, as well as on the slowdown of its dynamics that gives rise to anomalous diffusivity.