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SEM images of patterned CNTs grown on a Si substrate: (a) Three letters, “ANU,” written with a diamond pen covered by CNTs. (b)–(d) SEM images taken from the letter “N” area with higher magnifications showing selective and patterned growth of CNTs.
TEM images showing (a) a multiwalled cylindrical structure and (b) catalyst Fe particles encapsulated inside nanotube tips.
SEM images of vertically aligned and patterned CNTs on Si substrates: (a) top view, (b) side view, (c) precisely deposited CNTs, and (d) a higher magnification image of (c).
SEM images of (a) rough surface of scratched area on a Si substrate without CNT deposition, and (b) a row of CNT root inside a trench indicating the trenches as the nucleation sites.
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