Carbon nanotube freestanding membrane, process for production of the same, composites having carbon nanotube membranes and process for production thereof
The invention provides a composite comprising a substrate and a membrane of vertically aligned carbon nanotubes formed on the substrate which membrane is independent of the material of the substrate and a process for the production of the same. A process for producing the first composite comprising the first substrate and vertically aligned carbon nanotubes formed on the first substrate which comprises the step (a) of preparing the second composite comprising the second substrate made of quartz or silicon and vertically aligned carbon nanotubes formed on the second substrate, the step (b) of subjecting the second composite to water immersion wherein the temperature (Tw) of the water is higher than the temperature (Tc) of the second composite with a temperature difference ΔT (=Tw−Tc) of at least 25° C. to make the carbon nanotubes peel off the second substrate and arrange them either in water or on the surface thereof, and the step (c) of arranging the resulting vertically aligned carbon nanotubes on the f
