Roch, A.A.RochJost, O.O.Jost2022-03-082022-03-082010https://publica.fraunhofer.de/handle/publica/309321The method involves irradiating carbon nano-small tubes with monochromatic electromagnetic radiation from a radiation source such as laser source and X-ray radiation source, and of two different wavelengths with a predetermined linear polarization direction, so as to separate the metallic and semiconductor carbon nano-small tubes. Alignment of regions forming the metallic carbon nano-small tubes and/or regions of the semiconductor carbon nano-small tubes is diverted from longitudinal axes of the nano-small tubes.de621patent102010026921