cross section ring shape Aluminium_Oxide SicMosfet PetruPoni Vortex EFMAmplitude SmallScan HighAspect ReflexLens Gold Graphite BFO Filter MultiferroicMaterials MfmPhase NUSNNI Ucl Permalloy Polyvinylidene_fluoride OpticalWaveguide ForceMapping Graphene Bismuth BiFeO3 Workfunction Chemical_Vapor_Deposition Gallium mechanical_property optoelectronics Chloroform Film CastIron align YttriaStabilizedZirconia