Korea Kevlar STM Mosfet Pvdf INSPParis lift_mode piezoelectric force microscopy FM_KPFM ThermalProperties OpticalModulator Fiber mfm_amplitude I-VSpectroscopy Scratch PyroelectricDetector TyphimuriumBiofilm HOPG neodymium_magnets NtuEee Multiferroic_materials bias_mode SoftSample MolybdenumDisulfide Galfenol sputter SurfaceOxidation AM_KPFM Christmas SelfAssembly MagneticForce LifeScience SKPM strontiu_titanate FailureAnalysis