Conductivity PetruPoni_Institute membrane Fet CaMnO3 Nanostructure light_emitting HiVacuum ring shape Self-assembledMonolayer Mechanical FastScan Vanadate Liquid FloppyDisk Pzt bias_mode DeflectionOptics mono_layer InsulatorFilm Graphene Hexatriacontane layers PhaseTransition fluoroalkane Sapphire Hair fifber EvatecAG Pipette LateralPFM hard_disk MetalCompound Bismuth KAIST