期刊
JOURNAL OF MATERIALS SCIENCE
卷 48, 期 2, 页码 936-940出版社
SPRINGER
DOI: 10.1007/s10853-012-6818-z
关键词
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资金
- Ministry of Education, Culture, Sports, Science and Technology of Japan [19054007]
- Canon Foundation
- Grants-in-Aid for Scientific Research [19054007] Funding Source: KAKEN
Electrical conductance of multi-walled carbon nanotubes (MWCNTs) with closed and open tips contacting with a gold (Au) electrode was studied by in situ transmission electron microscopy. When a current density through the contact region reached a threshold value of 2.6 x 10(8) A/cm(2), the MWCNT tip was embedded into the Au surface by local melting of Au, and the total resistance was reduced with the increase of the contact area. Conductance per unit area at the contact between the MWCNT and Au electrode for the open-ended MWCNT is four times larger than that for the close-ended one, which is due to the direct connection of inner walls of the open-ended MWCNT with the Au surface.
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