Journal
NANOSCALE RESEARCH LETTERS
Volume 8, Issue -, Pages -Publisher
SPRINGER
DOI: 10.1186/1556-276X-8-546
Keywords
Carbon nanotube; Buckypaper; Tube length
Funding
- New Energy and Industrial Technology Development Organization (NEDO)
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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 mu 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.
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