Nanofiber MLCC Iron C_AFM oxide_layer Neodymium Inorganic gallium_nitride single_layer Bacterium Lateral_Force_Microscopy Varistor PinpointPFM LithiumNiobate ForceVolume Croatia SurfaceChange Dental Ni81Fe19 UnivMaryland dielectric trench PpLdpe Foil ScanningTunnelingMicroscopy Cell LateralForce MagneticForce Mechanical nanobar Battery Switching PhaseTransition ForceMapping MfmAmplitude TCS