ScratchMode CrAu AM_KPFM PFM ScanningKelvinProbeMicroscopy small_scan MESA structure CBD #EC Silver GaP Vanadate Thermoplastic_polyurethane Polydimethylsiloxane Neodymium Film cannabinoid AM-KPFM PatternedSapphireSubstrat UnivOfMaryland AdhesionForce CP-AFM Techcomp Typhimurium SRAM Microchannel NusEce SiliconOxide Hexacontane Polarization Beads SetpointMode Lanthanum_aluminate Zagreb Cell