Four-probe electrical characterization of Pt-coated TMV-based nanostructures

摘要: The electrical transport and structural properties of tobacco mosaic virus (TMV)-based nanostructures have been studied. Electroless deposition was used to coat the TMV outer surface with a 13 nm thick homogeneous Pt layer. SEM, TEM characterization obtained has performed. Using four independently controlled scanning tunnelling microscope tips we were able perform four-point probe resistance measurements on linear assemblies demonstrate continuous nature metallic coating. measured resistivity values virial nanowires exceeded bulk value by 10–100 times; notwithstanding this coated structure allowed high current densities, order 105–108 A cm−2. four-probe technique proved be useful for analysing bio-inorganic nanowires.