FM_KPFM PinpointPFM SThM YszSubstrate PFM Thermal Singapore Mfm KAIST SiliconeOxide Hexylthiophene TriGlycineSulphate Mapping H-BN Ferrite ring shape NUSNNI silicon_carbide Bio Oxidation FrictionalForce Mechanical&nanotechnology OrganicCompound Beads Aluminum PolyStylene amplitude_modulation Spincast Electrical&Electronics KPFM ForceVolumeMapping thermal_conductivity CNT Polyvinylidene ItoGlass