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Effect of gravity on the growth of vertical single-walled carbon nanotubes in a chemical vapor deposition process
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10.1063/1.2228068
/content/aip/journal/apl/89/3/10.1063/1.2228068
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/3/10.1063/1.2228068
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Figures

Image of FIG. 1.
FIG. 1.

SEM images of carbon nanotubes grown on the substrate with different substrate orientations and growth time. (a) Downwards, . (b) Downwards, . (c) Upwards, .

Image of FIG. 2.
FIG. 2.

(a) Raman spectrum of the vertical carbon nanotubes (CNTs) in Fig. 1(a) . The radial breathing mode (RBM) signals in the range of indicate that the CNTs are single-walled carbon nanotubes (SWCNTs). (b) TEM image of individual SWCNTs. The diameter of a SWCNT is . (c) TEM image of bundle SWCNTs. The diameter of a SWCNT is .

Image of FIG. 3.
FIG. 3.

SEM images of single-walled carbon nanotubes (SWCNTs) grown on with Si(100) surface normal pointing (a) downwards and (b) 45° downwards. Their corresponding growth mechanisms are sketched in (c) and (d), respectively. The gravity helps SWCNTs to precipitate at the bottom of the metal drops and to line up with the direction of gravity in both substrate orientations.

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/content/aip/journal/apl/89/3/10.1063/1.2228068
2006-07-20
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effect of gravity on the growth of vertical single-walled carbon nanotubes in a chemical vapor deposition process
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/3/10.1063/1.2228068
10.1063/1.2228068
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