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Tailoring solid-liquid interactions to control droplet wetting and dynamics

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dc.contributor.authorVahabi, Hamed, author
dc.contributor.authorKota, Arun K., advisor
dc.contributor.authorDasi, Lakshmi Prasad, committee member
dc.contributor.authorTavener, Simon, committee member
dc.contributor.authorBandhauer, Todd M., committee member
dc.date.accessioned2019-09-10T14:35:43Z
dc.date.available2021-09-03T14:36:14Z
dc.date.issued2019
dc.description.abstractRecent advances in micro/nano-scale fabrication techniques and synthesis of novel chemicals with a variety of functionalities have opened up new avenues in tailoring solid-liquid interactions. In this work, by systematically tuning the wettability and slipperiness of solid surfaces, we developed a multitude of novel surfaces and strategies. First, we developed metamorphic superomniphobic surfaces that display wetting transition in response to heat. Second, we systematically studied the dynamics of droplets of various liquids during coalescence-induced jumping on textured super-repellent surfaces. Third, we developed a simple and passive strategy consisting of superomniphobic surfaces with a protruding macrotexture to demonstrate coalescence-induced jumping with significantly higher energy conversion efficiency, compared to state-of-the-art surfaces. Fourth, we developed a simple "grafting to" technique to fabricate a novel non-textured hydrophilic surface that is counterintuitively slippery with unprecedented potential to enhance the heat transfer coefficient in dropwise condensation. Fifth, we developed a novel triboelectric-based droplet manipulation technique on smooth hydrophobic slippery surfaces that is very simple without any complex fabrication of manipulation platform or expensive actuation system. Overall, the novel surfaces and strategies developed in this work have significant implications for phase-change heat transfer, liquid transportation, anti-fouling, self-cleaning, drag reduction, corrosion control, and manipulation of liquid droplets.
dc.format.mediumborn digital
dc.format.mediumdoctoral dissertations
dc.identifierVahabi_colostate_0053A_15534.pdf
dc.identifier.urihttps://hdl.handle.net/10217/197312
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relation.ispartof2000-2019
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subjectcoalescence-induced jumping
dc.subjectdropwise condensation
dc.subjectsuper-repellent surfaces
dc.subjectdroplet manipulation
dc.subjectCFD
dc.subjectslippery hydrophilic SLIC surface
dc.titleTailoring solid-liquid interactions to control droplet wetting and dynamics
dc.typeText
dcterms.embargo.expires2021-09-03
dcterms.embargo.terms2021-09-03
dcterms.rights.dplaThis Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
thesis.degree.disciplineMechanical Engineering
thesis.degree.grantorColorado State University
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy (Ph.D.)

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