PhaseChange solar_cell LiquidCell India EvatecAG organic_polymer Non-ContactMode Force-distance AAO NtuEee SmalScan Ito SiliconOxide TiO2 Flake CeNSE_IISc Laser SPMLabs NTU SurfaceOxidation Biofilm Sadowski Thermoplastic_polyurethane ChemicalCompound LaAlO3 Hair molecular_self_assembly EFMAmplitude HfO2 chemical_compound exfoliate dielectric_trench Gallium Phosphide Nanopattern