food medical YszSubstrate AIN DOE self_healing SSRM FFM TyphimuriumBiofilm Vac LiftHeight Polyvinylidene Nanotechnology ScanningKelvinProbeMicroscopy Thermoplastic_polyurethane Conductive AFM BlockCopolymer BFO alkanes organic_polymer AM_KPFM BismuthVanadate Reading Topography Growing bias_mode temperature_control Polyvinylidene_fluoride Piezoelectric UTEM DeoxyribonucleicAcid lift_mode Bacterium Fe_film Strontium