FFM AM-KPFM Collagen FAPbI3 FailureAnalysis cross section SFAs Scratch MagneticPhase Ram Bacterium HexacontaneFilm Floppy UnivOfMaryland Solution Flake SiliconeOxide Ptfe Composition Calcium NCM\ dichalcogenide Fujian Ferrite Fendb HafniumDioxide hard_disk_media HiVacuum nanomechanical Polytetrafluoroethylene Corrosion Sadowski pulsed_laser_deposition Dopped Gallium_Arsenide