AM-KPFM piezoelectric force microscopy AtomicLayer Sulfur Piranha ContactMode Beads STM dielectric trench Polarization LiIonBattery Foil hydrocarbon ThermalProperties ForceVolumeMapping GalliumPhosphide Alloy SiliconOxide I-VSpectroscopy BFO Friction Polydimethylsiloxane GaP CP-AFM FuelCell Filter Pores Step Melt ItoGlass thermal_conductivity CVD Chrome BloodCell MagneticForceMicroscopy