US Patent 7486400 - Plasmon resonance structure with metal and dielectric nanoparticle layers

http://www.freepatentsonline.com/7486400.html

Plasmon resonance is an amplifying effect associated with biosensing applications. This patent teaches a laminate nanoparticle system offering improvements in the electric field enhancement. Claim 1 reads:

1. A plasmon resonance layered structure comprising:

metal nanoparticle layers constructed by metal nanoparticles; and

dielectric particle layers composed of dielectric particles wherein the metal nanoparticle layers and the dielectric particle layers are alternately deposited to constitute the layers structure that generates plasmon resonances.