Floppy DNA #Materials Korea SurfaceOxidation VerticalPFM VortexCore Plug India TappingMode Gallium_Arsenide Iron Modulus ScanningSpreadingResistanceMicroscopy InsulatorFilm heterojunctions Potential Polyvinylidene_fluoride fluoroaalkane ImideMonomer chemical_compound HfO2 Vinylpyridine HDD silicon_oxide Bio Change CalciumHydroxyapatite TriGlycineSulphate Edwin Piranha Composition PDMS hydrocarbon Glass