▎ 摘　　要

NOVELTY - Making flexible antennas working in gigahertz (GHz) range based on reduced graphene oxide of any shape on a flexible substrate by using inkjet printing method to print graphene oxide layers, comprises: e.g. applying an inkjet ink to polyethylene terephthalate (PET) substrate using a computer-controlled inkjet printer according to the developed print template containing graphene oxide flakes suspended in propylene glycol; applying an ink layer in one pass in a volume of 1-1.2 ml/cm2; andf drying the printout at 60-70 degrees C for 30-40 minutes. USE - The method is useful for making flexible antennas working in GHz range based on reduced graphene oxide of any shape on a flexible substrate. DETAILED DESCRIPTION - Making flexible antennas working in gigahertz (GHz) range based on reduced graphene oxide of any shape on a flexible substrate by using inkjet printing method to print graphene oxide layers, comprises: applying an inkjet ink to polyethylene terephthalate (PET) substrate using a computer-controlled inkjet printer according to the developed print template containing graphene oxide flakes suspended in propylene glycol with density of 1-1.3 g/cm3, a flow index of 0.8-0.95, a viscosity of 12-12.3 mPas and a surface tension of 30-35 mJ/second2; applying an ink layer in one pass in a volume of 1-1.2 ml/cm2; drying the printout at 60-70 degrees C for 30-40 minutes; feeding the dried printout to the UV computer controlled working table according to the prepared template and subjecting to reduction, where the beam power is 1-2 W, focal length is 4.5-5 mm, and beam speed is 100-120 cm/second; and protecting the obtained antenna with UV varnish.