The present invention provides a method for producing
metal-supported carbon, which includes supporting
metal microparticles on the surface of
carbon black, by a liquid-phase reduction method, in a thin film fluid formed between
processing surfaces arranged to be opposite to each other so as to be able to approach to and separate from each other, at least one of which rotates relative to the other, as well as a method for producing crystals comprising
fullerene molecules and
fullerene nanowhisker /
nanofiber nanotubes, which includes uniformly stirring and mixing a solution containing a first
solvent having
fullerene dissolved therein, and a second
solvent in which fullerene is less soluble than in the first
solvent, in a thin film fluid formed between
processing surfaces arranged to be opposite to each other so as to be able to approach to and separate from each other, at least one of which rotates relative to the other.