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Wetting properties of structured interfaces composed of surface-attached spherical nanoparticles

Bhattarai, Bishal
http://rave.ohiolink.edu/etdc/view?acc_num=wright1544817024854422

Abstract Details

2018, Master of Science in Renewable and Clean Energy Engineering (MSRCE), Wright State University, Mechanical Engineering.
In this thesis, the effects of the external pressure and surface energy on stability and wetting transition at nanotextured interfaces are studied using molecular dynamics and continuum simulations. The surface roughness of the composite interface is modeled via an array of spherical nanoparticles with controlled wettability. It was found that in the absence of external pressure, the liquid interface is flat and its location relative to the solid substrate is determined by the radius of the particle and the local contact angle. With increasing pressure on the liquid film, its interface becomes more curved and the three-phase contact line is displaced along the spherical surface but remains stable due to the re-entrant geometry. It was demonstrated that the results of molecular dynamics simulations for the critical pressure of the Cassie-Baxter wetting state agree well with the estimate of the critical pressure obtained by numerical minimization of the interfacial energy using Surface Evolver.
Nikolai Priezjev, Ph.D. (Advisor)
Hong Huang, Ph.D. (Committee Member)
Sheng Li, Ph.D. (Committee Member)
Ahsan Mian, Ph.D. (Committee Member)
42 p.
Engineering; Fluid Dynamics; Nanoscience; Nanotechnology
Liquid-solid interfaces; Molecular dynamics simulations; Wetting; Contact angle; Superhydrophobic; Surface Evolver

Recommended Citations

Citations

  • Bhattarai, B. (2018). Wetting properties of structured interfaces composed of surface-attached spherical nanoparticles [Master's thesis, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1544817024854422

    APA Style (7th edition)

  • Bhattarai, Bishal. Wetting properties of structured interfaces composed of surface-attached spherical nanoparticles. 2018. Wright State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1544817024854422.

    MLA Style (8th edition)

  • Bhattarai, Bishal. "Wetting properties of structured interfaces composed of surface-attached spherical nanoparticles." Master's thesis, Wright State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=wright1544817024854422

    Chicago Manual of Style (17th edition)

wright1544817024854422
652
© 2018, some rights reserved.Creative Commons License Wetting properties of structured interfaces composed of surface-attached spherical nanoparticles by Bishal Bhattarai is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by Wright State University and OhioLINK.