UnivCollegeLondon margarine Dimethicone TCS ContactMode SiWafer Friction ScanningSpreadingResistanceMicroscopy Ni81Fe19 Fet PVAP3HT BloodCell light_emission Insulator Chromium OxideLayer Electrical&Electronics organic_polymer Polystyrene OpticalModulator Bacteria Tungsten_disulfide PANI CrossSection KelvinProbeForceMicroscopy ScratchMode Polytetrafluoroethylene DOE Galfenol thermal_conductivity #Materials Self-assembledMonolayer PS_LDPE Strontium Piezoelectric