PVA LiNbO3 AmplitudeModulation LiIonBattery gallium_nitride Optoelectronic Trench Genetic Hydroxyapatite MagneticForce Pzt Mechanical Semiconductor LateralPFM HafniumDioxide ChemicalCompound #Materials high_resolution NUS_Physics Yttria_stabilized_Zirconia Plug PetruPoni_Institute Regensburg Device Polyvinylidene VerticalPFM ring shape PS_PVAC atomic_layer Magnets MeltingPoint Domain Nanofiber PMNPT PhaseTransition