Formation of carbon submicron structures and nanostructures on the surface of cold substrates exposed to laser radiation in air

An experimental method is developed for preparing nanostructures in the field of high-power laser radiation (~10⁷ W cm^-2) upon deposition of vapours of carbon-containing materials on a cold substrate surface. A specific feature of the method is irradiation of a sample in air at room temperature and pressure close to 1 atm. The dependences of the morphologic properties of nanostructures on the distance between a substrate and a sample are determined. Variations in the size of deposited nanostructures and their characteristic shape depending on the chosen material are found.