semifluorinated alkane Fluoride Pyroelectric self-assembly PVAP3HT DentalProsthesis OxideLayer LiquidImaging SICM CNT nanobar CeNSE_IISc UTEM Fujian Heating FrequencyModulation HighAspect TiO2 P3HT silicon_carbide IIT-chennai StyreneBeads Vacuum Styrene SFAs fluoroaalkane SThM FastScan HiVacuum ForceVolumeMapping OpticalWaveguide Polyethylene PFM #EC Polyurethane