neodymium_magnets VortexCore hard_disk nanomechanical Pyroelectric Steps StrontiuTitanate PetruPoni_Institute vertical_PFM MagneticArray FrequencyModulation ContactModeDot Polystyrene IndiumTinOxide Granada DataStorage NCM\ Perovskite Pzt Implant C_AFM silicon_carbide gallium_nitride GaAs Aluminium_Oxide Floppy SetpointMode Regensburg thermal_conductivity Gold Gallium_Arsenide LithiumNiobate Treatment GaN electrospinning