OpticalWaveguide Polydimethylsiloxane Lift Lateral_Force_Microscopy UnivMaryland PhaseImaging PS_LDPE Korea Hole Aggregated_molecules Strontium solar_cell BoronNitride 3-hexylthiophene Defects FrequencyModulation ElectroChemical SKPM Step STO hard_disk OpticalModulator FM_KPFM molecules ScanningSpreadingResistanceMicroscopy Hexatriacontane Wildtype chemical_compound ScratchMode MeltingPoint AAO Optic Etch molecule Temperature