PUR MoS2 Nanopattern epitaxy Fluoride Silicon solar_cell Cell AEAPDES oxide_layer Topography alkanes BiFeO3 hetero_structure 2dMaterials LMF INSP BTO amplitude_modulation ScanningIon-ConductanceMicroscopy norganic mechanical property CancerCell Gold Piezo mfm_amplitude HardDiskMedia non_contact Piezoelectric exfoliate PatternedSapphireSubstrat Fe_film Reduction Silver TCS