NiFe Lattice PtfeFilter mono_layer heterojunctions hard_disk_media Cobalt SAM Polymer Ptfe Annealed NCM\ Hexacontane cannabis PolyvinylAcetate ULCA Array Bacterium Materials LaAlO3 Polytetrafluoroethylene semifluorinated_alkanes PiezoelectricForceMicroscopy Pattern PVA Butterfly CP-AFM pulsed_laser_deposition Hafnia Friction Pinpoint PFM YszSubstrate bias_mode PFM plastic