METHOD OF LOCAL CONTROLLED REDUCTION OF GRAPHENE OXIDE FOR SENSOR APPLICATIONS Russian patent published in 2019 - IPC C01B32/198 C01B32/184 B01J19/12 

FIELD: technological processes.

SUBSTANCE: invention relates to methods of modifying thin films using electromagnetic (laser) radiation in order to obtain given electrophysical properties of modified regions and controlling degree of functionalisation of said regions. Method involves forming a film of graphene oxide from a liquid phase on a flexible polymer substrate with further reduction of a portion of the film in given regions using a microsecond laser at wavelength of 442 nm. When forming the pattern of the reduced region, depending on the tasks, the fluence of the laser is changed so as to obtain either a low-reduced conductive region of the reduced graphene oxide at low fluence values or an area with higher conductivity and structure.

EFFECT: providing formation of conductive region of reduced graphene oxide with resistance of not more than 300 kOhm, wherein material is present functional groups, which further provide binding of sensitive substances with reduced graphene oxide, thereby forming transducer.

5 cl, 4 dwg, 1 tbl