Mechinical CarbonNanotube UnivCollegeLondon thermal_conductivity Transparent C60H122 Optical strontiu_titanate SiliconeOxide SrTiO3 mfm_amplitude Polyvinylidene_fluoride Carbon TiO2 INSPParis WWafer Polyimide Vinylpyridine NCM OpticalModulator TempControl cross section BismuthVanadate PFM gallium_nitride Vac Defect ChemicalCompound Barium_titanate heterojunctions BiasMode ThinFilm PinpointNanomechanicalMode Heat MBE