Carbon nanotube structures are provided, in which the networks with a desired
area and volume, where the carbon nanotubes are electrically or magnetically connected,
are formed and the method for easily manufacturing the carbon nanotube structures
with less carbon nanotube structures. Carbon nanotube devices are also provided,
to which the useful carbon nanotube structures mentioned above are applied. A method
for manufacturing carbon nanotube structures includes the steps of applying carbon
nanotubes to a low-viscosity dispersion medium to obtain a high-viscosity dispersing
liquid which includes carbon nanotubes, and forming a network of the carbon nanotubes
having electrical and/or magnetic connections therebetween by removing the low-viscosity
dispersion medium from the high-viscosity dispersed liquid.