Multispectral plasmonic crystal sensors
US7705280B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2007 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Sep 22, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/554
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides plasmonic crystals comprising three-dimensional and quasi comprising three-dimensional distributions of metallic or semiconducting films, including multi-layered crystal structures comprising nanostructured films and film arrays. Plasmonic crystals of the present invention include precisely registered and deterministically selected nonplanar crystal geometries and spatial distributions providing highly coupled, localized plasmonic responses in thin film elements and/or nanostructures of the crystal. Coupling of plasmonic responses provided by three-dimensional and quasi-three dimensional plasmonic crystal geometries and structures of the present invention generates enhanced local plasmonic field distributions useful for detecting small changes in the composition of an external dielectric environment proximate to a sensing surface of the plasmonic crystal. Plasmonic crystal structures of the present invention are also useful for providing highly localized excitation and/or imaging of fluorophores proximate to the crystal surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.