Polymer‐Mediated Alignment of Carbon Nanotubes under High Magnetic Fields

Garmestani, Hamid; Al-Haik, Marwan; Dahmen, K. H.; Tannenbaum, Rina; Li, D.; Sablin, Simon-Serge; Hussaini, M. Y.

doi:10.1002/adma.200304932

Cited by 164 publications

(99 citation statements)

References 28 publications

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“…It is well known that WAXD is one of powerful tools for characterizing the degree of crystallite of CNTs aligned in polymer matrix [12][13][14]. Figure 3 shows the X-ray diffraction photographs taken from different X-ray incident directions for the rubber composite filled with 30 wt% CNTs aligned along the X-direction.…”

Section: Resultsmentioning

confidence: 99%

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Fabrication of aligned carbon nanotube-filled rubber composite

et al. 2006

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Here we fabricated rubber composite sheets filled with 5wt% and 30wt% of highly aligned carbon nanotubes (CNTs) through conventional rubber technology. The alignment of CNTs was possibly derived from dragged shear force during the optimized milling process. The selective alignment of CNTs leaded to enhancement of elastic modulus, thermal conductivity, electrical conductivity, and electromagnetic shielding property compared to neat rubber sheet.

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Section: Resultsmentioning

confidence: 99%

“…Up to my knowledge, this is the first report on the production of the aligned carbon nanotube-filled rubber even though there were a few reports on the alignment of carbon nanotubes in polymer using the magnetic fields [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of aligned carbon nanotube-filled rubber composite

et al. 2006

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“…For example, nickel wires and Fe 3 O 4 nanowires have been synthesized under the influence of magnetic fields [31 33], phase-selective synthesis of ferrosulfide microrods has been realized by a hydrothermal process using an amino acid additive under the influence of an external magnetic fi eld [34], Wang et al synthesized necklace-like noble metal hollow nanoparticle chains by using necklace-like Co nanoparticle chains, previously synthesized in a magnetic field-induced process, as a sacrificial template [35], and Gu et al demonstrated the alternating current magnetic fi eldinduced assembly of magnetite nanoparticles and its close relationship with the surface charge [36]. In addition, magnetic fields have also been used to direct the alignment of vanadium pentoxide ribbons [37], mouse osteoblast cells [38], carbon nanotubes [39], and polystyrene nanoparticles in an aluminum ferrite layered block [40]. Recently, our group has reported that Ni Co nanochains and magnetic flux-closure nanorings can be prepared directly in high yield in triethylene glycol solution containing polyvinylpyrrolidone (PVP) [41].…”

Section: Introductionmentioning

confidence: 99%

Magnetic field-induced solvothermal synthesis of one-dimensional assemblies of Ni-Co alloy microstructures

Lin

2008

Nano Res.

110

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One-dimensional magnetic Ni Co alloy microwires with different microstructures and differently shaped building blocks including spherical particles, multilayer stacked alloy plates, and alloy flowers, have been synthesized by an external magnetic field-assisted solvothermal reaction of mixtures of cobalt(II) chloride and nickel(II) chloride in 1, 2-propanediol with different NaOH concentrations. By adjusting the experimental parameters, such as precursor concentration and Ni/Co ratio, Ni Co alloy chains with uniform diameters in the range 500 nm to 1.3 μm and lengths ranging from several micrometers to hundreds of micrometers can be obtained. A mechanism of formation of the one-dimensional assemblies of magnetic Ni Co microparticles in a weak external magnetic fi eld is proposed.

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“…There exist several experimental works that display enhancement of mechanical properties of CNT-based composites by application of magnetic fields [5,6]. This fact is the chief motivation of this study.…”

Section: Introductionmentioning

confidence: 95%

Nonlocal Timoshenko Beam for Vibrations of Magnetically Affected Inclined Single-Walled Carbon Nanotubes as Nanofluidic Conveyors

Kiani

2017

Acta Phys. Pol. A

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This work displays both longitudinal and transverse vibrations of magnetically affected inclined single-walled carbon nanotubes for conveying fluid flow. By employing an equivalent continuum structure on the basis of the nonlocal Timoshenko beam model as well as plug-like model for the nanofluidic flow inside the pore, the nonlocal governing equations are obtained accounting for nonlocality, frictionless nature of the inside wall, the Knudsen number, and full longitudinal and transverse interactions of the fluid flow with the single-walled carbon nanotubes. By implementing Galerkin-based assumed mode method, the equations of motion are discretized appropriately and then solved for the unknown dynamical deformation fields. The roles of nanofluidic flow velocity, small-scale parameter, inclination angle of single-walled carbon nanotube, and magnetic field strength on maximum values of longitudinal and transverse displacements are explained and discussed. The results show that the maximum dynamic deflection of the inclined nanotube would lessen by increase of the magnetic field strength. This fact is also more apparent for higher levels of fluid flow velocity. Additionally, variation of the longitudinal magnetic field has a trivial influence on the variation of longitudinal displacement. The predicted results reveal that application of the longitudinal magnetic field could be used as an efficient methodology to reduce the lateral vibrations of single-walled carbon nanotubes as nanofluidic conveyors.

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Polymer‐Mediated Alignment of Carbon Nanotubes under High Magnetic Fields

Cited by 164 publications

References 28 publications

Fabrication of aligned carbon nanotube-filled rubber composite

Fabrication of aligned carbon nanotube-filled rubber composite

Magnetic field-induced solvothermal synthesis of one-dimensional assemblies of Ni-Co alloy microstructures

Nonlocal Timoshenko Beam for Vibrations of Magnetically Affected Inclined Single-Walled Carbon Nanotubes as Nanofluidic Conveyors

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