Oxidation Hysteresys GranadaUniv SmalScan polymeric_arrays mechanical_property WS2 Celebration cross section LateralPFM Wildtype molecular_beam ContactModeDot OpticalModulator domain_switching FM-KPFM Metal CuParticle PinpointNanomechanicalMode Battery BismuthFerrite Growing 2d_materials Mobile Varistor ring shape Floppy Fe_film Polyurethane temperature_control vertical_PFM AmplitudeModulation Piezoelectric Calcium HOPG