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Hollow Janus cylinders at liquid interfaces

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TitleInfo
Title
Hollow Janus cylinders at liquid interfaces
Name (type = personal)
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Weir
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Robert
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Robert Weir
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author
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Shojaei-Zadeh
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Shahab
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Shahab Shojaei-Zadeh
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Advisory Committee
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chair
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German
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Advisory Committee
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internal member
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Diez-Garias
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Javier
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Javier Diez-Garias
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Advisory Committee
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Rutgers University
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degree grantor
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Graduate School - New Brunswick
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theses
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2016
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2016-05
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2016
Place
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xx
Language
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eng
Abstract (type = abstract)
In this dissertation, capillary-induced interactions and self-assembly behavior of amphiphilic hollow Janus cylinders at an air-water interface is numerically investigated. First, preferred orientation of a single hollow Janus cylinder is determined as a function of amphiphilicity and aspect ratio. When the cylinder is horizontal (long axis parallel to the interface), the shape of the deformed interface and the resulting capillary-induced interactions between a pair of cylinders is examined. In addition, preferred tip-to-tip or side-by-side assembly behavior of a pair of cylinders is determined by minimizing the total interfacial energy of the system. The preferred assembly behavior of a pair of hollow Janus cylinders is side-by-side for higher amphiphilicities, but as the amphiphilicity is reduced, tip-to-tip orientation becomes similarly preferable. The case of hollow Janus cylinders is also compared with their homogeneous counterparts as well as with solid homogeneous and solid Janus cylinders. The significant difference between Janus and homogeneous hollow cylinders is that the preferred orientation of a homogeneous hollow cylinder is horizontal with respect to the interface for given contact angles and at large aspect ratios. Meanwhile hollow Janus cylinders with large aspect ratios and amphiphilicities (beta≥ 20) prefer a vertical orientation (piercing the interface). The preferred orientation of a single solid Janus cylinder behaves similarly to its hollow counterpart except it prefers a vertical orientation at higher amphiphilicities. In comparison, single hollow and solid homogeneous cylinders have almost similar preferred orientation. The outcome of this study may provide insight on self-assembly behavior of model hollow particles, such as carbon nanotubes, at liquid interfaces for fabrication of functional monolayers or for use as interface stabilizers in foam and emulsions.
Subject (authority = RUETD)
Topic
Mechanical and Aerospace Engineering
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Rutgers University Electronic Theses and Dissertations
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ETD_7233
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electronic resource
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Extent
1 online resource (viii, 35 p. : ill.)
Note (type = degree)
M.S.
Note (type = bibliography)
Includes bibliographical references
Note (type = statement of responsibility)
by Robert Weir
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Graduate School - New Brunswick Electronic Theses and Dissertations
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rucore19991600001
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Identifier (type = doi)
doi:10.7282/T3JW8H3M
Genre (authority = ExL-Esploro)
ETD graduate
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Rights

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The author owns the copyright to this work.
RightsHolder (type = personal)
Name
FamilyName
Weir
GivenName
Robert
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2016-04-14 13:57:48
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Name
Robert Weir
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Affiliation
Rutgers University. Graduate School - New Brunswick
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Author Agreement License
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I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
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DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2016-05-31
DateTime (encoding = w3cdtf); (qualifier = exact); (point = end)
2016-11-30
Type
Embargo
Detail
Access to this PDF has been restricted at the author's request. It will be publicly available after November 30th, 2016.
Copyright
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Copyright protected
Availability
Status
Open
Reason
Permission or license
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