DLaTGS GaP PVAP3HT Wang Optical CrossSection Biofilm Pinpoint PFM Zhi AM-KPFM Calcium LiquidCell blended polymers BaTiO3 PolymerBlend Oxidation Phenanthrene Au111 PtfeMembrane Croatia WPlug AlkaneFilm SiliconCrystal Flake Annealed SICM DOE Worcester_Polytechnic_Institute Lift ForceVolume ito_film MESA structure DataStorage PVA Ferroelectric