Back to results
US 8,786,852 B2Granted
Nanoscale array structures suitable for surface enhanced raman scattering and methods related thereto
AssigneesLawrence Livermore National Security, LLC, The Board of Trustees of the University of Illinois
InventorsTiziana C. Bond, Robin Miles, James C. Davidson, Gang Logan Liu
Life of this patent
Estimating the term…
Abstract
Methods for fabricating nanoscale array structures suitable for surface enhanced Raman scattering, structures thus obtained, and methods to characterize the nanoscale array structures suitable for surface enhanced Raman scattering. Nanoscale array structures may comprise nanotrees, nanorecesses and tapered nanopillars.
Claims9
A method of measuring a local electric field intensity with nanometer resolution for an array structure in surface enhanced Raman scattering (SERS), the method comprising:
- providing a structure comprising:
- a planar substrate,
- an array of nanopillars on the planar substrate, the array of nanopillars substantially perpendicular to the planar substrate and having a substantially cylindrical shape,
- a metal drop having a substantially spherical shape on each nanopillar of the array of nanopillars, and
- a second metal covering a surface of the planar substrate;
- placing a plurality of semiconductor quantum dots or artificial fluorophore molecules in a plurality of hot spots in the structure;
- and
- measuring a photoluminescence and/or a fluorescence spectroscopy and calculating the expected local electric field intensity based on quantum-confined Stark effect, thus measuring the local electric field intensity with nanometer resolution for the structure.
5 more elements
Dependencies are inferred from the claim text.