BariumTitanate electrospinning mfm_amplitude Mosfet CuFoil MonoLayer Filter Al2O3 Step WS2 SiliconeOxide AlkaneFilm CuSubstrate PDMS Magnetostrictive LDPE SAM HfO2 Graphite PpLdpe Wildtype BismuthFerrite ScratchMode dielectric trench conductive Polytetrafluoroethylene InsulatorFilm pulsed_laser_deposition Materials atomic_steps FrictionalForceMicroscopy Worcester_Polytechnic_Institute Piezoresponse Singapore Lift