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4D printing with shape memory polymers for functional structures and devices

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TitleInfo
Title
4D printing with shape memory polymers for functional structures and devices
Name (type = personal)
NamePart (type = family)
Yang
NamePart (type = given)
Chen
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Chen Yang
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author
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Lee
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Howon
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Howon Lee
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Advisory Committee
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chair
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Aaron
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Aaron Mazzeo
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Advisory Committee
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internal member
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Pelegri
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ASSIMINA Pelegri
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Advisory Committee
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Lee
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Ki-Bum
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Ki-Bum Lee
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Advisory Committee
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outside member
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Rutgers University
Role
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degree grantor
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School of Graduate Studies
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school
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Text
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theses
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ETD doctoral
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2021
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2021-01
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2021
Language
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English
Abstract (type = abstract)
Additive manufacturing or three-dimensional (3D) printing builds an object through layer-by-layer addition of materials. This additive process greatly advances manufacturing towards complex structures and rapid building. Four-dimensional (4D) printing refers to 3D printing of smart materials whose shape, properties, and functions evolve with time in a programmed way, which produces functional structures and devices spontaneously. Shape memory polymer (SMP) is one kind of smart materials that can maintain a temporarily deformed shape and restore its original shape upon appropriate stimulation. Additionally, SMP also demonstrates modulation in mechanical properties in this process. Despite continuously development of new material compositions, stimulus and printing techniques, field of SMP 4D printing is limited to demonstrating shape-changing capability for visual exhibition, which does not realize full potential in the combination of structural design, 3D printing, and SMP’s shape memory capability and mechanical property modulation.

In order to address this limitation and advance the field, this dissertation exploits a rapid and high precision 3D printing technique, projection micro-stereolithography (PµSL), to create SMP structures and devices with designed and task-oriented functionalities. Three projects are included: (1) A SMP hook-and-loop fastener system is designed consisting of a SMP hook patch and a typical loop patch. This fastener system demonstrates tunable adhesion force that is comparable to commercial hook-and-loop fasteners at room temperature and 20 times smaller adhesion force upon heating. (2) A 4D printed transformable tube array (TTA) is created for high-throughput 3D cell culture and histology. The interconnected TTA can be programmed to be expanded by 3.6 times of its printed dimension to match the size of a multi-well plate for 3D cell culture, with the ability to restore its original dimension for transferring all cultures to a histology cassette for sectioning and assessment. Consequently, the TTA enables parallel processing of 3D cell culture and histology to remarkably reduces time and labor cost. (3) 4D printed metamaterials are manufactured with shape reconfigurability, functional deployability and mechanical tunability. Through printing metamaterials using a SMP as the constituent material, mechanical performances of the metamaterials can be tuned dramatically and reversibly by temperature to adapt to requirements. In addition, geometry reconfigurability and deployability of metamaterials are achieved by taking advantage of shape memory capability of the constituent SMP.

Through exploring new possibilities in combinations of 3D structural design, 3D printing, and SMP’s two important characteristics: shape memory capability and mechanical property modulation, this dissertation presents 3 works using 4D printing with SMP with expanded functionalities. Eventually, it serves to move the field of 4D printing one step closer towards real-world applications.
Subject (authority = LCSH)
Topic
Shape memory polymers
Subject (authority = RUETD)
Topic
Mechanical and Aerospace Engineering
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Rutgers University Electronic Theses and Dissertations
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ETD_11376
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application/pdf
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text/xml
Extent
1 online resource (xix, 182 pages) : illustrations
Note (type = degree)
Ph.D.
Note (type = bibliography)
Includes bibliographical references
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School of Graduate Studies Electronic Theses and Dissertations
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rucore10001600001
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Identifier (type = doi)
doi:10.7282/t3-6e63-8v35
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Rights

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The author owns the copyright to this work.
RightsHolder (type = personal)
Name
FamilyName
Yang
GivenName
Chen
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2020-12-22 19:09:11
AssociatedEntity
Name
Chen Yang
Role
Copyright holder
Affiliation
Rutgers University. School of Graduate Studies
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Author Agreement License
Detail
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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Type
Embargo
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2021-01-31
DateTime (encoding = w3cdtf); (qualifier = exact); (point = end)
2023-01-31
Detail
Access to this PDF has been restricted at the author's request. It will be publicly available after January 31st, 2023.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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2020-12-23T14:43:03
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2020-12-23T14:43:03
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