CarbonNanotube NUS_NNI_Nanocore Materials hard_disk_media KAIST Liquid MeltingPoint phase_change PVAC CastIron FrictionalForce Polytetrafluoroethylene Logo Polyaniline TappingMode PMNPT Co/Cr/Pt TriGlycineSulphate OrganicSemiconductor lithography NusEce India Non-ContactMode PANI PvdfFilm EFMAmplitude Lift LMF Hexatriacontane Protein MfmAmplitude Change Pinpoint PFM Defect ScanningKelvinProbeMicroscopy