Piezoresponse SPMLabs mono_layer Aggregated_molecules heterojunctions Growing Dental BreastCancerCell Sio2 Regensburg Biofilm HardDiskMedia Inorganic Ceramics ChemicalCompound SrTiO3 NeodymiumMagnets neodymium_magnets Global_Comm Polytetrafluoroethylene University_of_Regensburg Pattern Piezo Holes domain_switching Sulfur C60H122 Growth Polyvinylidene_fluoride BloodCell fluorocarbon Alkane graphene_hybrid molecular_beam Pinpoint PFM