AtomicSteps Gallium_Arsenide MultiferroicMaterials BismuthVanadate UnivMaryland Titanate Steps Composition HardDiskMedia HexacontaneFilm MESA structure CrystalGrowing KelvinProbeForceMicroscopy Boundary BiasMode Polystyrene Pores Sapphire ForceVolumeImage FrequencyModulation Dr.JurekSadowski ImideMonomer FM-KPFM ForceMapping SFAs Calcite HexagonalBoronNitride sputter SPMLabs Indium_tin_oxide chemical_compound Workfunction Mapping Domain PatternedSapphireSubstrat