TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Method: The step of functionalizing carbon nanotubes comprises coating the nanotubes with at least one graphene layer, reacting graphite oxide and many metal alloy hydride particles to form a graphite oxide-metal alloy hydride mixture and heating the graphite oxide-metal alloy hydride mixture in a chemical vapor deposition (CVD) chamber in presence of a carbon-containing material to form the composite nanofiller. The graphene layer is formed by reacting graphite oxide and the metal alloy hydride particles and heating the resultant graphite oxide-metal alloy hydride mixture in a CVD chamber. A flow rate of the carbon containing material within the CVD chamber is 40-60 sccm. The method further comprises introducing hydrogen within the CVD chamber while heating the graphite oxide-metal alloy hydride mixture. The flow rate of hydrogen gas is 40-70 sccm, preferably 50 sccm. The step of embedding the composite nanofiller comprises: dispersing the composite nanofiller in a solvent to form a composite nanofiller solution; dispersing a polymer material in the solvent to form a polymer solution; ultrasonicating the composite nanofiller solution and the polymer solution to form a homogenous solution; and casting the homogenous solution to form the graphene functionalized carbon nanotube polymer composite. Preferred Components: The conducting functional molecules comprise graphene molecules. The metal alloy hydride particles comprise: nickel metal hydride, iron metal hydride and/or cobalt metal hydride; or organometallic compounds. The organometallic compounds comprise ferrocene. The carbon containing material comprises acetylene, methane, ethane, butane and/or propane. The graphite oxide-metal alloy hydride mixture is heated to 700-1100 degrees C. The carbon nanotubes comprise single walled carbon nanotubes and/or multi walled carbon nanotubes. The diameter of: each graphene functionalized carbon nanotube is 60-70 nm; and the composite nanofiller is 60-70 nm. The composite nanofiller comprises 2-3 wt.% graphene. The electromechanical strain sensor has a strain gauge factor of 6-20 and chemical resistance of 98% when subjected to an acid medium. The strain sensor is an isotropic sensor.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The polymer material comprises a thermosetting polymer and/or thermoplastic polymer, preferably polyvinylidene fluoride, polystyrene, polyethylene terephthalate, polyethylene oxide, polyvinylpyrrolidone, polyether ether ketone and/or nylon 6. The solvent comprises dimethyl formamide, N-methyl-2-pyrrolidone, dimethyl sulfide, acetone and/or water. EXAMPLE - Graphite oxide and metal alloy hydride particles were reacted by grinding and the resultant graphite oxide-metal alloy hydride mixture was heated in chemical vapor deposition (CVD) chamber at 500 degrees C. Hydrogen was introduced into CVD chamber for 30 minutes at 50 sccm. The graphite oxide-metal alloy hydride mixture was further heated in presence of argon gas at 700 degrees C. Acetylene was introduced within the CVD chamber for 30 minutes at 50 sccm. The resultant composite nanofiller with graphene layer disposed around carbon nanotubes was collected and purified. The composite nanofiller was dispersed in dimethyl formamide solvent to obtain homogenous composite nanofiller solution was prepared. Polyvinylidene fluoride (PVDF) was dissolved in dimethylformamide to prepare a PVDF solution. The composite nanofiller solution and PVDF solution were mixed and stirred at 3000 rpm for 60 minutes and the resultant homogenous composite solution was solvent casted at 70 degrees C to form the graphene functionalized carbon nanotube PVDF composite.