Single wall carbon nanotube (SWNT) bundles protruding from the SWNT layers
on self-aligned Sn apexes were brought to a distance of 30 nm by a scanning
tunneling microscope inside a transmission electron microscope. A straight
bundle on the tip could be observed in situ in contact electrostatically w
ith a looped bundle on the sample by applying tip bias voltages above 2.0 V
. The bundles were welded at the nanometer size contact area by local Joule
heating. (C) 2001 American Institute of Physics.