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Influence of lengths of millimeter-scale single-walled carbon nanotube on electrical and mechanical properties of buckypaper.

ABSTRACT: The electrical conductivity and mechanical strength of carbon nanotube (CNT) buckypaper comprised of millimeter-scale long single-walled CNT (SWCNT) was markedly improved by the use of longer SWCNTs. A series of buckypapers, fabricated from SWCNT forests of varying heights (350, 700, 1,500 ?m), showed that both the electrical conductivity (19 to 45 S/cm) and tensile strength (27 to 52 MPa) doubled. These improvements were due to improved transfer of electron and load through a reduced number of junctions for longer SWCNTs. Interestingly, no effects of forest height on the thermal diffusivity of SWCNT buckypapers were observed. Further, these findings provide evidence that the actual SWCNT length in forests is similar to the height.

SUBMITTER: Sakurai S 

PROVIDER: S-EPMC3884011 | biostudies-literature | 2013 Dec

REPOSITORIES: biostudies-literature

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Influence of lengths of millimeter-scale single-walled carbon nanotube on electrical and mechanical properties of buckypaper.

Sakurai Shunsuke S   Kamada Fuminori F   Futaba Don N DN   Yumura Motoo M   Hata Kenji K  

Nanoscale research letters 20131227 1

The electrical conductivity and mechanical strength of carbon nanotube (CNT) buckypaper comprised of millimeter-scale long single-walled CNT (SWCNT) was markedly improved by the use of longer SWCNTs. A series of buckypapers, fabricated from SWCNT forests of varying heights (350, 700, 1,500 μm), showed that both the electrical conductivity (19 to 45 S/cm) and tensile strength (27 to 52 MPa) doubled. These improvements were due to improved transfer of electron and load through a reduced number of  ...[more]

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