Anisotropic carbon nanotube papers fabricated from multiwalled carbon nanotube webs

Inoue, Yasuo; Suzuki, Yusuke; Minami, Yoshitaka; Muramatsu, J.; Shimamura, Yoshinobu; Suzuki, Katsunori; Ghemes, Adrian; Okada, Morihiro; Sakakibara, Shigeki; Mimura, Hidenori; Naito, Kimiyoshi

doi:10.1016/j.carbon.2011.02.010

Cited by 145 publications

(122 citation statements)

References 20 publications

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“…[15][16][17][18][19][20][21][22][23] The value obtained here is higher than the largest reported value of 250 W m À1 K À1 . 20) This result attests to the higher density of CNT structures obtained by STEP growth than of other structures that have been reported.…”

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confidence: 50%

Long Length, High-Density Carbon Nanotube Film Grown by Slope Control of Temperature Profile for Applications in Heat Dissipation

Kawabata

Murakami

Nihei

et al. 2013

Jpn. J. Appl. Phys.

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We have developed a new growth method for a film of dense, vertically aligned carbon nanotubes (CNTs). We varied the slope of the growth temperature profile between 450 and 800 °C. By using the method with an Fe/Ti catalyst, the filling factor of the CNT film was measured to be 0.28, which is 20 times denser than that in the case where conventional CVD growth is utilized. We name this growth method the slope control of temperature profile (STEP) growth. Another feature of CNT films obtained by STEP growth is their mirror like surfaces. This allows for the measurement of the thermal conductivity by a pulse optical heating thermoreflectance method. The maximum thermal conductivity of the STEP-grown CNT film was 260 W m-1 K-1, which is higher than those of a solder and Si. This result suggests that STEP-grown CNT films are effective heat dissipation materials and can be used as thermal interface material (TIM) and thermal through silicon via (TSV).

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confidence: 50%

Long Length, High-Density Carbon Nanotube Film Grown by Slope Control of Temperature Profile for Applications in Heat Dissipation

Kawabata

Murakami

Nihei

et al. 2013

Jpn. J. Appl. Phys.

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“…The pressure was approximately 2.0 MPa. Details of procedures used for CNT sheet and composite fabrication have been reported elsewhere [31,37]. The composites' microstructure was observed using a scanning electron microscope (FE-SEM, S-4700; Hitachi Ltd., Japan).…”

Section: Processing Of Cnt/epoxy Compositesmentioning

confidence: 99%

Nanoscopic observations for evaluating the failure process of aligned multi-walled carbon nanotube/epoxy composites

Tsuda

Ogasawara

Moon

et al. 2013

Composites Science and Technology

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This study examined the nanoscopic damage progression of aligned multi-walled carbon nanotubes (CNT) / epoxy composites under tensile loading using transmission electron microscopy (TEM). Aligned CNT/epoxy composite films (30 micro meter thickness) were processed using a forestdrawn aligned CNT sheet and hot-melt prepreg method. Four film specimens, respectively subjected to tensile stress of 0 MPa, 45 MPa, 95 MPa and 110 MPa, were prepared. After tensile loading, each specimen was machined until the thickness became about 100 nm using a focused ion beam milling machine (FIB) for TEM observations. Damage of three kinds, i.e. CNT break derived from the disordered CNT structures around metallic catalyst, sword-in-sheath type CNT break, and several patterns of interfacial debonding, was observed clearly. The broken CNTs and interfacial debonding per unit area were counted from TEM photographs. Results show that broken CNTs and interface debonding increased considerably at 95-110 MPa, which suggests multiple fracture of CNT under tensile loading. The CNT length at the failure stress (110 MPa) was approximately 45 μm. Estimated values from the strength of CNTs resemble those from macroscopic stress-strain behavior.Nanoscopic observations for evaluating the failure process of aligned multi-walled carbon nanotube / epoxy composites AbstractThis study examined the nanoscopic damage progression of aligned multi-walled carbon nanotubes (CNT) / epoxy composites under tensile loading using transmission electron microscopy (TEM). Aligned CNT/epoxy composite films (30 m thickness) were processed using a

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“…Experiments demonstrated that the good drawablity has been obtained in up to 500 m high forests formed by nanotubes 10 nm in diameter. Two-millimeter high forests formed by tubes 30~50 nm in diameter are demonstrated to be drawable Inoue, 2011. Since the drawability is determined by the interconnections of CNTs in the forest, the veryshort and very-high forests could be drawable by adjusting other parameters.…”

Section: Height Of the Forestmentioning

confidence: 99%

Assembly of Carbon Nanotube Sheets

Zhang¹,

Baughman²

2011

Electronic Properties of Carbon Nanotubes

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Anisotropic carbon nanotube papers fabricated from multiwalled carbon nanotube webs

Cited by 145 publications

References 20 publications

Long Length, High-Density Carbon Nanotube Film Grown by Slope Control of Temperature Profile for Applications in Heat Dissipation

Long Length, High-Density Carbon Nanotube Film Grown by Slope Control of Temperature Profile for Applications in Heat Dissipation

Nanoscopic observations for evaluating the failure process of aligned multi-walled carbon nanotube/epoxy composites

Assembly of Carbon Nanotube Sheets

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