Vanadium dioxide nanostructures with remarkable surface-enhanced Raman scattering activity
Haomin Guan, Z. Ryan Tian, Qinghong Kong, Guangcheng Xi
Abstract
Structure and size control are always considered to be effective routes to enhance the sensitivity of materials. Herein, rough VO2 (D) nanostars and nanospheres with highly dense and rough surfaces were synthesized. Accompanied by the properties inherited from the rough VO2 nanospheres, i.e., high adsorption and strong plasma resonance, these VO2 (D) nanospheres exhibit highly sensitive activity as a surface enhanced Raman spectrum substrate. The detection limit of Rhodamine 6G on this semiconductor SERS substrate is as low as 10-9 M.
Topics & Concepts
Vanadium dioxideRaman scatteringMaterials scienceRaman spectroscopySubstrate (aquarium)MetalNanostructureChemical engineeringPorosityVanadiumScatteringNanotechnologyThin filmOpticsComposite materialMetallurgyOceanographyGeologyEngineeringPhysicsTransition Metal Oxide NanomaterialsCopper-based nanomaterials and applicationsZnO doping and properties