Worcester_Polytechnic_Institute Tin sulfide StainlessSteel EFMAmplitude AM-KPFM AAO CeramicCapacitor Tungsten Topography Metal FM_SKPM Imprint Sapphire Conduct Terrace HardDiskMedia MagneticForce silicon_oxide HiVacuum HighAspect Chloroform layers temp FAFailureAnlaysis SKKU mfm_amplitude fe_nd_b vertical_PFM electrospinning TransitionMetal SiWafer Yeditepe_University NusEce Polarization CalciumHydroxide