LiftHeight TemperatureControllerStage Defect BariumTitanate MeltingPoint optoelectronics OpticalElement Fujian NusEce epitaxy Heating Defects University_of_Regensburg ring shape PolyvinylideneFluoride Sphere Semiconductor Inorganic MolybdenumDisulfide AIN Friction Wang Boundary LightEmiting Heat Magnetic Force Microscopy NTU Ni81Fe19 Yeditepe_University PinpointPFM FrictionForce Collagen EFM Blend Phosphide