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Modeling Mechanisms of Water Affinity and Condensation on Si-based Surfaces via Experiments and Applications

Abstract Water affinity and condensation on Si-based surfaces is investigated to address the problem of fogging on silicone intraocular lenses (IOL) during cataract surgery, using Si(100), silica (SiO2) and polydimethylsiloxane (PDMS) silicone (SiOC2H6)n. Condensation is described by two step nucleation and growth where roughness controls heterogeneous nucleation of droplets followed by Ostwald ripening. Wetting on hydrophilic surfaces consists of continuous aqueous films while hydrophobic surfaces exhibit fogging with discrete droplets. Si-based surfaces with wavelength above 200 nm exhibit fogging during condensation. Below 200 nm, surfaces are found to wet during condensation. Water affinity of Si-based surfaces is quantified via the surface free... (more)
Created Date 2011
Contributor Xing, Qian (Author) / Herbots, Nicole (Advisor) / Culbertson, Robert (Advisor) / Chamberlin, Ralph (Committee member) / Treacy, Michael (Committee member) / Smith, David (Committee member) / Arizona State University (Publisher)
Subject Physics / Atomic force microscopy / Condensation / Contact angle analysis / Ion beam analysis / Ion beam modification / Surface free energy
Type Doctoral Dissertation
Extent 252 pages
Language English
Reuse Permissions All Rights Reserved
Note Ph.D. Physics 2011
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS

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Description Dissertation/Thesis