SThM Fujian Glass BiasMode pulsed_laser_deposition LiIonBattery silicon_oxide Hair Leakage Worcester_Polytechnic_Institute ferromagnetic mfm_amplitude Cross-section MonoLayer cooling SoftSample hard_disk ConductiveAFM Pinpoint PFM ItoGlass Ptfe epitaxy NUS_Physics PolyvinylideneFluoride TemperatureControllerAFM dielectric trench PetruPoni_Institute Conduct Chloroform BariumTitanate H-BN BaTiO3 HOPG Austenite MBE