Composition LaAlO3 dielectric trench electrospinning PinPointMode #Materials dielectric_trench Dopped PinpointNanomechanicalMode Leakage PolycrystallineFerroelectricBCZT AAO University_of_Regensburg SrO Al2O3 SKPM Polarization Hole Forevision tip_bias_mode Gallium ChemicalCompound CuParticle NeodymiumMagnets ScratchMode BCZT ElectroDeposition CeramicCapacitor Steps OxideLayer Morphology mechanical_property LithiumNiobate FrictionForce light_emitting