Patent ID: 9447299
Filing Date: 2016-09-20
CPC Classification: B33Y,C08K,C09D,G02B

Claim Text:
1. An optical ink composed of a monomer matrix material doped with ligand-functionalized nanoparticles; wherein the monomer has a viscosity less than 20 cPoise and is UV curable to form a solid polymer; wherein the matrix material doped with the ligand-functionalized nanoparticles has a transmittance of at least 90% in a predetermined optical wavelength range, wherein the ligand-functionalized nanoparticles have a size less than 100 nm, are loaded in the monomer matrix material at a volume percent of at least 2%, and alter an index of refraction of the monomer matrix by at least 0.02; wherein each of the ligand-functionalized nanoparticles is covalently bonded to a ligand, where the ligand is covalently bonded to the monomer matrix material, and has a length less than 1.2 nm.