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Electrokinetics of Scalable, Electric-Field-Assisted Fabrication of Vertically Aligned Carbon-Nanotube/Polymer Composites

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TypeOfResource
Text
TitleInfo
Title
Electrokinetics of Scalable, Electric-Field-Assisted Fabrication of Vertically Aligned Carbon-Nanotube/Polymer Composites
Name (type = personal)
NamePart (type = family)
Castellano
NamePart (type = given)
Richard J.
Affiliation
Institute for Advanced Materials, Devices and Nanotechnology (IAMDN), Rutgers University
Role
RoleTerm (type = text); (authority = marcrt)
author
Name (type = personal)
NamePart (type = family)
Akin
NamePart (type = given)
Cevat
Role
RoleTerm (type = text); (authority = marcrt)
author
Affiliation
Mechanical and Aerospace Engineering, Rutgers University
Name (type = personal)
NamePart (type = family)
Giraldo
NamePart (type = given)
Gabriel
Affiliation
Mechanical and Aerospace Engineering, Rutgers University
Role
RoleTerm (type = text); (authority = marcrt)
author
Name (type = personal)
NamePart (type = family)
Kim
NamePart (type = given)
Sangil
Affiliation
Lawrence Livermore National Laboratory
Role
RoleTerm (type = text); (authority = marcrt)
author
Name (type = personal)
NamePart (type = family)
Fornasiero
NamePart (type = given)
Francesco
Affiliation
Lawrence Livermore National Laboratory
Role
RoleTerm (type = text); (authority = marcrt)
author
Name (type = personal)
NamePart (type = family)
Shan
NamePart (type = given)
Jerry
Role
RoleTerm (type = text); (authority = marcrt)
author
Affiliation
Mechanical and Aerospace Engineering, Rutgers University
Name (type = corporate); (authority = RutgersOrg-Department)
NamePart
Institute for Advanced Materials, Devices and Nanotechnology (IAMDN)
Genre (authority = RULIB-FS)
Article, Refereed
Genre (authority = NISO JAV)
Version of Record (VoR)
Note (type = peerReview)
Peer reviewed
OriginInfo
DateIssued (encoding = w3cdtf); (keyDate = yes)
2015
Abstract (type = Abstract)
Composite thin films incorporating vertically aligned carbon nanotubes (VACNTs) offer promise for a variety applications where the vertical alignment of the CNTs is critical to meet performance requirements, e.g., highly permeable membranes, thermal interfaces, dry adhesives, and films with anisotropic electrical conductivity. However, current VACNT fabrication techniques are complex and difficult to scale up. Here, we describe a solution-based, electric-field-assisted approach as a cost-effective and scalable method to produce large-area VACNT composites. Multiwall-carbon nanotubes are dispersed in a polymeric matrix, aligned with an alternating-current (AC) electric field, and electrophoretically concentrated to one side of the thin film with a direct-current (DC) component to the electric field. This approach enables the fabrication of highly concentrated, individually aligned nanotube composites from suspensions of very dilute (Φ = 4 X 10<sup>-4</sup> volume fraction. We experimentally investigate the basic electrokinetics of nanotube alignment under AC electric fields, and show that simple models can adequately predict the rate and degree of nanotube alignment using classical expressions for the induced dipole moment, hydrodynamic drag, and the effects of Brownian motion. The composite AC + DC field also introduces complex fluid motion associated with AC electro-osmosis and the electrochemistry of the fluid/electrode interface. We experimentally probe the electric-field parameters behind these electrokinetic phenomena, and demonstrate, with suitable choices of processing parameters, the ability to scalably produce large-area composites containing VACNTs at number densities up to 10<sup>10</sup> nanotubes/cm<sup>2</sup>. This VACNT number density exceeds that of previous electric-field-fabricated composites by an order of magnitude, and the surface-area coverage of the 40 nm VACNTs is comparable to that of chemical-vapor-deposition-grown arrays of smaller-diameter nanotubes.
Language
LanguageTerm (authority = ISO 639-3:2007); (type = text)
English
PhysicalDescription
InternetMediaType
application/pdf
Extent
14 p.
Subject (authority = local)
Topic
Nanocomposites
Subject (authority = local)
Topic
Permeable membranes
Subject (authority = local)
Topic
Electro-orientation
Subject (authority = local)
Topic
Electrophoresis
Subject (authority = local)
Topic
Dielectrophoresis
Subject (authority = local)
Topic
Induced-charge electro-osmosis
Extension
DescriptiveEvent
Type
Citation
DateTime (encoding = w3cdtf)
2015
AssociatedObject
Name
Journal of Applied Physics
Type
Journal
Relationship
Has part
Identifier (type = volume and issue)
117(214306)
Reference (type = url)
http://dx.doi.org/10.1063/1.4921948
Extension
DescriptiveEvent
Type
Grant award
AssociatedEntity
Role
Funder
Name
U.S. Department of Defense
AssociatedObject
Type
Grant number
Name
BA12PHM123
Detail
This work was supported by the Chemical and Biological Technologies Department of the Defense Threat Reduction Agency via grant BA12PHM123 in the “Dynamic Multifunctional Materials for a Second Skin D[MS]2” program.
Name (type = corporate); (authority = RutgersOrg-Department)
NamePart
Mechanical and Aerospace Engineering
Name (type = corporate); (authority = RutgersOrg-School)
NamePart
School of Engineering
RelatedItem (type = host)
TitleInfo
Title
Castellano, Richard J.
Identifier (type = local)
rucore30222300001
RelatedItem (type = host)
TitleInfo
Title
Shan, Jerry
Identifier (type = local)
rucore30227900001
Location
PhysicalLocation (authority = marcorg); (displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Identifier (type = doi)
doi:10.7282/T3G73HF1
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Rights

RightsDeclaration (AUTHORITY = FS); (ID = rulibRdec0004)
Copyright for scholarly resources published in RUcore is retained by the copyright holder. By virtue of its appearance in this open access medium, you are free to use this resource, with proper attribution, in educational and other non-commercial settings. Other uses, such as reproduction or republication, may require the permission of the copyright holder.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
RightsEvent
Type
Permission or license
AssociatedObject
Type
License
Name
Multiple author license v. 1
Detail
I hereby grant to Rutgers, The State University of New Jersey (Rutgers) the non-exclusive right to retain, reproduce, and distribute the deposited work (Work) in whole or in part, in and from its electronic format, without fee. This agreement does not represent a transfer of copyright to Rutgers.Rutgers may make and keep more than one copy of the Work for purposes of security, backup, preservation, and access and may migrate the Work to any medium or format for the purpose of preservation and access in the future. Rutgers will not make any alteration, other than as allowed by this agreement, to the Work.I represent and warrant to Rutgers that the Work is my original work. I also represent that the Work does not, to the best of my knowledge, infringe or violate any rights of others.I further represent and warrant that I have obtained all necessary rights to permit Rutgers to reproduce and distribute the Work and that any third-party owned content is clearly identified and acknowledged within the Work.By granting this license, I acknowledge that I have read and agreed to the terms of this agreement and all related RUcore and Rutgers policies.
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Technical

RULTechMD (ID = TECHNICAL1)
ContentModel
Document
CreatingApplication
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1.5
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pdfTeX-1.40.14
DateCreated (point = end); (encoding = w3cdtf); (qualifier = exact)
2015-03-25T19:16:42
DateCreated (point = end); (encoding = w3cdtf); (qualifier = exact)
2015-03-25T19:16:42
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