cannabidiol ChemicalCompound Dopped ContactMode Insulator Conductive AFM Pinpoint PFM biocompatible FM_KPFM rubber polyvinyl acetate TCS Fe_film GaAs Battery aluminum_nitride Step Genetic PUR Optoelectonics Titanate IISCBangalore Polarization GaN DOE TungstenThinFilmDeposition KPFM Yttria_stabilized_Zirconia BoronNitride TransitionMetal Boron UnivCollegeLondon Forevision MESA structure Annealed