HIGHLY PRODUCTIVE METHOD OF DEPOSITING CARBON NANOTUBES AND COMPOSITE FILMS Russian patent published in 2008 - IPC B82B3/00 B32B9/00 

FIELD: nanotechnology.

SUBSTANCE: present invention pertains to means of forming a structure based on carbon nanotubes and can be used when making flexible optically transparent conducting coatings, flexible small-scale integration integrated circuits, test structures for a scanning probe microscope, resistive sensors etc. A drop of colloid solution of carbon nanotubes, containing a surface active substance in quantity, sufficient for stabilisation of the colloidal state of the solution, as well as 5-60 vol.% glycerine, sufficient for formation of a drop colloidal solution of a give size, are deposited on a given point on a substrate. For this purpose, the colloidal solution is put into the device, which transfers it to the printing head of a jet-printer. The device is in form of a catridge or a system for continuous supply of the colloidal solution. The substrate is moved using a system, in form of a paper-moving mechanism of a jet printer, or in form of a compact disc movement system. Removal of all components of the colloidal solution except carbon nanotubes, is achieved by evaporation and/or washing in a solvent. To obtain a composite film, carbon nanotubes are deposited on a substrate, in turns, with liquid components of a polymer or simultaneously with the liquid components of the polymer. The liquid components of the polymer are solidified while fusing their microdroplets, or under the effect of electromagnetic radiation, heating or as a result of evaporation of volatile components under atmospheric conditions. Viscosity of liquid components of the polymer corresponds to the microhydraulic system of the jet-printer. The liquid components of the polymer are deposited on the substrate by transferring them to the printing head of the jet printer. The method is characterised by high output and resolving power of depositing carbon nanotubes and composite films on a substrate and reduced cost.

EFFECT: highly productive and cheap method.

2 cl, 2 ex