Actuating Single Wall Carbon Nanotube–Polymer Composites: Intrinsic Unimorphs

Park, Cheol; Kang, Jin Ho; Harrison, Joycelyn S.; Costen, Robert C.; Lowther, Sharon E.

doi:10.1002/adma.200702566

Cited by 58 publications

(70 citation statements)

References 22 publications

(22 reference statements)

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“…Once percolation is achieved, however, we find enormous increases in the low frequency permittivities, as expected for materials exhibiting conductive behavior. Interfacial polarization at the surface of the SWCNTs is responsible for this increase at low frequencies and a similar observation has been reported elsewhere 21,22 . An order of magnitude increase in the permittivity is observed between the pure polymer (2.95) and the 0.75 wt% sample (35.48) at 1 kHz.…”

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confidence: 69%

Thermodynamic approach to enhanced dispersion and physical properties in a carbon nanotube/polypeptide nanocomposite

Lovell

Wise

Kim

et al. 2009

Polymer

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A high molecular weight synthetic polypeptide has been designed which exhibits favorable interactions with single wall carbon nanotubes (SWCNTs). The enthalpic and entropic penalties of mixing between these two molecules are reduced due to the polypeptide's aromatic sidechains and helical secondary structure, respectively. These enhanced interactions result in a well dispersed SWCNT/Poly ( L -Leucine-ran-L -Phenylalanine) nanocomposite with enhanced mechanical and electrical properties using only shear mixing and sonication. At 0.5 wt% loading of SWCNT filler, the nanocomposite exhibits simultaneous increases in the Young's modulus, failure strain, and toughness of 8%, 120%, and 144%, respectively. At one kHz, the same nanotube loading level also enhances the dielectric constant from 2.95 to 22.81, while increasing the conductivity by four orders of magnitude.Keywords: copolypeptide, single wall carbon nanotube (SWCNT), nanotube/polymer interactions, nanotube/polymer nanocomposite Next generation aerospace applications will demand strong and lightweight materials that offer additional intrinsic functionalities such as electrical conductivity, sensing, or actuation. Incorporation of single wall carbon nanotubes (SWCNTs) into certain high performance polymers yields a lightweight material with dramatically improved mechanical and electrical properties that also exhibits sensing and actuating behavior 1,2 . Achieving these improved properties depends on the SWCNTs being 1 https://ntrs.nasa.gov/search.jsp?R=20090017801 2018-05-09T15:57:46+00:00Z

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confidence: 69%

Thermodynamic approach to enhanced dispersion and physical properties in a carbon nanotube/polypeptide nanocomposite

Lovell

Wise

Kim

et al. 2009

Polymer

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“…Carbon nanotubes have aroused increasing interest due to their remarkable tensile strength, high mechanical strength, flexibility brilliant electrical and physicochemical properties and other unique structural, mechanical characteristics [7][8][9][10]_ENREF_6_ENREF_8. Attempts have been made to create advanced engineering materials with new or better properties through the incorporation of CNT in the selected matrices such as polymers, metals and ceramics [11].…”

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confidence: 99%

Preparation and characterization of carboxyl functionalized multiwall carbon nanotubes–hydroxyapatite composites

Barabáş

Katona

Bogya

et al. 2015

Ceramics International

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“…In particular, SWCNTs are promising as filler materials in polymer-based composites due to their ability to enhance the performance of matrices. It has been demonstrated that incorporation of SWCNTs into polymers enhances mechanical [5], electrical [6], and thermal properties [7], and therefore, SWCNT/polymer composites have opened up new device applications such as actuators [8,9], sensors [10], and photonic devices [11].…”

Section: Introductionmentioning

confidence: 99%

3D microfabrication of single-wall carbon nanotube/polymer composites by two-photon polymerization lithography

Ushiba

Shoji

Masui

et al. 2013

Carbon

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Please cite this article as: Ushiba, S., Shoji, S., Masui, K., Kuray, P., Kono, J., Kawata, S., 3D microfabrication of single-wall carbon nanotube/polymer composites by two-photon polymerization lithography, Carbon (2013), doi: http://dx.doi.org/10. 1016/j.carbon.2013.03.020 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractWe present a method to develop single-wall carbon nanotube (SWCNT)/polymer composites into arbitrary three-dimensional micro/nano structures. Our approach, based on two-photon polymerization lithography, allows one to fabricate three-dimensional SWCNT/polymer composites with a minimum spatial resolution of a few hundreds nm. A near-infrared femtosecond pulsed laser beam was focused onto a SWCNT-dispersed photo resin, and the laser light solidified a nanometric volume of the resin. The focus spot was three-dimensionally scanned, resulting in the fabrication of arbitrary shapes of SWCNT/polymer composites.SWCNTs were uniformly distributed throughout the whole structures, even in a few hundreds nm thick nanowires. Furthermore, we also found an intriguing phenomenon that SWCNTs were self-aligned in polymer nanostructures, promising improvements in mechanical and electrical properties. Our method has great potential to open up a wide range of applications such as micro-and nanoelectromechanical systems, micro/nano actuators, sensors, and photonics devices based on CNTs. Main Text

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Actuating Single Wall Carbon Nanotube–Polymer Composites: Intrinsic Unimorphs

Cited by 58 publications

References 22 publications

Thermodynamic approach to enhanced dispersion and physical properties in a carbon nanotube/polypeptide nanocomposite

Thermodynamic approach to enhanced dispersion and physical properties in a carbon nanotube/polypeptide nanocomposite

Preparation and characterization of carboxyl functionalized multiwall carbon nanotubes–hydroxyapatite composites

3D microfabrication of single-wall carbon nanotube/polymer composites by two-photon polymerization lithography

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