• Login
    View Item 
    •   Shocker Open Access Repository Home
    • Engineering
    • Mechanical Engineering
    • ME Research Publications
    • View Item
    •   Shocker Open Access Repository Home
    • Engineering
    • Mechanical Engineering
    • ME Research Publications
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Adsorption and capillary condensation in nanogap with nanoposts

    Date
    2017
    Author
    Avanessian, Tadeh
    Hwang, Gisuk
    Metadata
    Show full item record
    Citation
    Avanessian T, Hwang G. Adsorption and Capillary Condensation in Nanogap With Nanoposts. ASME. Heat Transfer Summer Conference, Volume 2: Heat Transfer Equipment; Heat Transfer in Multiphase Systems; Heat Transfer Under Extreme Conditions; Nanoscale Transport Phenomena; Theory and Fundamental Research in Heat Transfer; Thermophysical Properties; Transport Phenomena in Materials Processing and Manufacturing ():V002T13A008
    Abstract
    Adsorption isotherm and adsorption-capillary transition theories have been developed based on homogeneous micro-/nanoporous materials and structures. However, material and structures are often heterogeneous including local surface roughness and defects, where no predictive tool is available so far. In this study, the adsorption isotherm and the adsorption-capillary transition is examined for Ar-filled Pt nanogap (Lz = 5 nm) with nanoposts (one surface only) using Grand Canonical Monte Carlo (GCMC) simulations. Results show that the presence of the nanoposts causes a bimodal capillary transition and reduces the capillary transition pressure compared to the nanogap with both bare surfaces. The pressure difference between the bimodal transitions is pronounced with decreasing the nanopost pitch size. The larger nanopost height also leads to the early capillary transition, but the bimodal transition is pronounced for moderate heights of the nanoposts. A stronger solid-fluid interaction reduces the adsorption-capillary transition pressure at given temperature and increases the transition pressure difference between the nanogaps with or without nanoposts. The obtained results provide new insights of the role of surface nanostructure (nanoposts) into adsorption isotherm and capillary transition.
    Description
    Click on the DOI link to access the article (may not be free).
    URI
    http://dx.doi.org/10.1115/HT2017-4782
    http://hdl.handle.net/10057/14559
    Collections
    • ME Research Publications

    Browse

    All of Shocker Open Access RepositoryCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsBy TypeThis CollectionBy Issue DateAuthorsTitlesSubjectsBy Type

    My Account

    LoginRegister

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    DSpace software copyright © 2002-2023  DuraSpace
    DSpace Express is a service operated by 
    Atmire NV