OrganicCompound piezoelectric force microscopy Scratch HDD IVSpectroscopy Biofilm SAM BiFeO3 LightEmission organic_polymer Tungsten_disulfide Temasek_Lab Sadowski SrTiO3 Conductivity NiFe silicon_oxide Strontium BFO molecule Copper Sperm FailureAnlaysis Platinum Polyurethane Hydroxyapatite Topography blended polymers SRAM bias_mode Dimethicone Nanopattern OpticalWaveguide EFM InLiquid