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MICRON-SIZE PLASMONIC COLOR SORTER

  • US 20190310398A1
  • Filed: 07/06/2017
  • Published: 10/10/2019
  • Est. Priority Date: 07/07/2016
  • Status: Active Grant
First Claim
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1. An optical device comprisinga dielectric transparent substrate, anda metallic layer having a thickness between about 20 nm and about 1000 nm disposed on said substrate and comprising at least one localized group of cavities, each localized group being confined within a diameter smaller than about 5 um, and each localized group comprising at least two cavities, with a distance between two adjacent cavities in said localized group being between about 100 nm and about 2000 nm, each cavity in said localized group being shaped as a through-hole in said metallic layer, said through-hole having a polygonal cross-section having a polygon side length between 50 nm and 2000 nm.

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