BlockCopolymer CalciumHydroxyapatite PtfeMembrane Perovskite Stiffness ScanningThermalMicroscopy ring shape CNT PolymerBlend Conductive AFM Indent vertical_PFM Pattern Ca10(PO4)6(OH)2 Ni81Fe19 TemperatureControl TappingMode BoronNitride EFMAmplitude GalliumPhosphide Monisha Mechinical FrictionForce Silver Workfunction H-BN Anneal SKPM CaMnO3 Current Magnetostrictive Bmp self_healing rubber LifeScience