Nanostructure NUS_Physics YszSubstrate fifber Ecoli SurfaceChange SoftSample cross section Boron PatternedSapphireSubstrat hydrocarbon Conducting doped ScanningKelvinProbeMicroscopy Polarization Film GranadaUniv WS2 Mapping Singapore #Materials Aluminum InorganicCompound LithiumNiobate Fiber mfm_amplitude AtomicLayer Edwin CarbonNanotube FrictionalForce BreastCancerCell AM-KPFM Imprint PetruPoni MultiferroicMaterials