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We wish to thank financial support from the JSPS Grants-in-Aid for Scientific Research No. 19710101, the Shorai Foundation for Science and Technology, and the ¡®Nanotechnology Network Project¡¯ of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. (a) TEM image of the pristine SWNT material showing the SWNT bundles; (b) a SWNT nano-fiber is being drawn out of the SWNT suspension by a tungsten needle; (c) a SWNT nano-fiber laid on top of SiO2 trenches forming five nanobridges; (d) the same nano-bridge structure after being fixed to the substrate by deposition of tungsten using FIB. (a) AFM topographic image of a nano-bridge structure formed by a SWNT bundle; the inset is an SEM image showing the dimensions of the bundle; (b) force¨C displacement curves obtained from the three positions indicated by colored arrows (letters) in (a); (c) simulation model of a SWNT bundle attracted by dielectrophoretic forces towards the tip of the preformed SWNT nano-fiber; (d) simulated dielectrophoretic forces and measured packing densities of eight SWNT nano-fibers plotted with respect to their diameter; (e¨Cg) high-resolution SEM images showing different surface morphologies of the SWNT nano-fibers with increasing diameters as indicated in the respective diagrams. ±¾Ìû¹Ø¼ü´Ê£ºsuspension forming Ministry TEM showing |
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