Patent ID: 11885929
Assignee: TRUSTEES OF TUFTS COLLEGE
Field: Optics (Instruments)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A method of forming a hierarchical opal configured to separate wavelengths of light using a diffractive optical element, the method comprising the following steps:
a) applying a silk fibroin solution to a lattice comprising one or more layers of a plurality of particles, the lattice forming a mold for the hierarchical opal having the diffractive optical element, wherein applying the silk fibroin solution fills voids between the plurality of particles;
b) drying the silk fibroin solution into a composite material including the hierarchical opal and the plurality of particles; and
c) removing the plurality of particles to form the hierarchical opal having the diffractive optical element formed on a surface of the hierarchical opal.