OpticalWaveguide Annealed FrictionalForceMicroscopy ring shape Strontium CuSubstrate multi_layer NiFe Alkane Water DomainSwitching pulsed_laser_deposition Ptfe PolymerPatterns Wonseok Jason self_assembly ScanningTunnelingMicroscopy light_emission ferromagnetic solar_cell LiBattery ThinFilm Conduct CntFilm Collagen mechanical_property Platinum heterojunctions Calcite VerticalPFM Phthalocyanine Mechanical norganic SoftSample