AlkaneFilm Piezoresponse HydroGel Pipette SingleLayer block_copolymer Friction OpticalModulator SetpointMode Conductive AFM ConductiveAFM ScanningKelvinProbeMicroscopy PolyvinylAcetate 3-hexylthiophene SPMLabs Electronics Resistance FrequencyModulation MBE Pattern HiVacuum HexacontaneFilm domain_switching Device Vac Permalloy AdhesionEnergy ImideMonomer CastIron molecules molecular_self_assembly SKKU Beads FM-KPFM AM-KPFM