▎ 摘　　要

NOVELTY - A graphene oxide and gold nanorod composite ink comprises graphene oxide with surface modification of positively-charged gold nanorod, and water solvent. The graphene oxide has concentration of 0.01-0.1 M and size of 800-1000 nm. The positively-charged gold nanorod has concentration of 0.01-0.1 M. USE - Graphene oxide and gold nanorod composite ink used for print material technology field. ADVANTAGE - The green and environment-friendly composite ink has stable property, simple preparation, low temperature and high conductivity. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) preparation of graphene oxide and gold nanorod composite ink comprising taking graphene oxide dispersion liquid, and positive-charged gold nanorod dispersion liquid, and ultrasonically mixing at 20-50 degrees C for 30-120 minutes; and (2) preparation of positively-charged gold nanorod dispersion liquid comprising taking 10-30 mM surface ligand suspension, ultrasonically high-speed stirring, adding dropwise 0.1-0.5 M sodium hydroxide solution, completely dissolving, clarifying, adding 40-120 mL of 0.01-0.1 M gold nanorod aqueous solution, high-speed stirring for 12-36 hours, washing and dispersing water.