dielectric trench TransitionMetal PatternedSapphireSubstrat dielectric_trench PolymerBlend Zhi exfoliate LowDensityPolyethylene Aluminum hetero_structure Bmp Wildtype FM-KPFM HexagonalBN DeflectionOptics Electronics Optoelectonics NtuEee WS2 PolyvinylideneFluoride Corrosion 2dMaterials Platinum Spincast Polymer PinpointPFM PECurve Multiferroic_materials Chemical_Vapor_Deposition polymeric_arrays Titanate small_scan YttriaStabilizedZirconia UnivMaryland EFM