Sperm PVAP3HT AdhesionForce GranadaUniv Lateral_Force_Microscopy plastic Ferrite Cross-section cooling Ananth Morphology Al2O3 Potential Metal SKPM AM_SKPM SThM Modulus mfm_amplitude Film membrane PMNPT Anneal hetero_structure PFM BloodCell FailureAnalysis Pore Christmas Biofilm StrontiuTitanate CrossSection PUR temperature controller AFM Yeditepe_University