small_scan gallium_nitride self-assembled_monolayer MESA structure CeNSE_IISc Neodymium Tin disulfide CuSubstrate aluminum_nitride HOPG PatternedSapphireSubstrat Conducting StyreneBeads ItoGlass NtuEee Indium_tin_oxide Growing Polarization Strontium PinpointNanomechanicalMode Layer Praseodymium Titanate light_emission BariumTitanate Gallium DentalProsthesis Tungsten_disulfide PVAC vertical_PFM self_assembly Polymer OxideLayer Fendb margarine