▎ 摘　　要

NOVELTY - Nanocomposite comprises: graphene oxide nanosheets prepared by oxidizing graphite using potassium permanganate, hydrogen peroxide and deionized water in presence of sulfuric acid to obtain graphite oxide, optionally purifying the graphite oxide using hydrochloric acid and deionized water, and exfoliating the graphite oxide to obtain graphene oxide nanosheets and metal nanoparticles, where the ratio of graphene oxide to metal nanoparticle is 1:1 wt/wt.%. USE - The nanocomposite is useful for fabricating sensor that is for sensing temperature (preferred), pressure, humidity, gas and biological samples (claimed). ADVANTAGE - The sensor measures the temperature at -60 degrees C to 85 degrees C (claimed). The nanocomposite: provides the sensor that has enhanced sensitivity, response time and flexibility in terms of bendability; and allows for mass production of the sensor at a low cost with reduced device size and less power consumption. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing the nanocomposite, comprising synthesizing graphene oxide nanosheets, dispersing graphene oxide nanosheets and metal nanoparticles in a solvent in a ratio of 1:1 wt/wt.% to obtain the nanocomposite; (2) sensor (1) comprising the nanocomposite, fabricated on a substrate where the substrate is flexible substrate (2) comprising inorganic polyimide films (kapton), mylar, polyethylene naphthalate, polyethylene terephthalate, thin metal / metal alloy substrate comprising nickel, copper, aluminum/stainless steel with an insulating coating, preferably polyimide films (kapton); and (3) fabricating sensor comprising the nanocomposite, comprising coating the nanocomposite on a substrate to obtain patterned substrate, and annealing (80 degrees C) the nanocomposite coated on the patterned substrate to obtain a nanocomposite film. DESCRIPTION OF DRAWING(S) - The figure illustrates schematic representation of graphene oxide-platinum nanocomposite based temperature sensor. Sensor (1) Flexible substrate (2) Silver paste contacts (3) Copper wires (4) Parylene (5)