Thermoplastic_polyurethane HOPG BiFeO3 Ca10(PO4)6(OH)2 PFM ScanningKelvinProbeMicroscopy EFM Resistance Dental BCZT Hafnia #EC University_of_Regensburg AM_KPFM Metal ImideMonomer Defects Sadowski 2-vinylpyridine CuParticle SingleCrystal molecular_beam Magnetostrictive Mosfet AAO BariumTitanate amplitude_modulation FrictionalForceMicroscopy ShenYang OrganicCompound PolyvinylAcetate Glass thermal_conductivity IndiumTinOxide NUS_NNI_Nanocore