PVA NUS_NNI_Nanocore SoftSample Polydimethylsiloxane Oxide Fluoride YszSubstrate DomainSwitching Potential Polyvinylidene Foil temperature controller AFM CrAu PrCurve BiasMode Solar Gallium Blend CuSubstrate Hole Bacterium EFM Chungnam_National_University Butterfly BlockCopolymer temperature_control Switching ConductiveAFM Edwin ito_film polymeric_arrays SingleLayer fluoroaalkane MultiferroicMaterials Electical&Electronics