Shukla S.,State University of New York at Buffalo |
Baev A.,State University of New York at Buffalo |
Jee H.,State University of New York at Buffalo |
Hu R.,State University of New York at Buffalo |
And 4 more authors.
ACS Applied Materials and Interfaces | Year: 2010
A polymeric composite material composed of colloidal gold nanoparticles (<10 nm) and SU8 has been utilized for the fabrication of large-area, high-definition photonic crystal. We have successfully fabricated near-infrared photonic crystal slabs from composite materials using a combination of multiple beam interference lithography and reactive ion etching processes. Doping of colloidal gold nanoparticles into the SU8 photopolymer results in a better definition of structural features and hence in the enhancement of the optical properties of the fabricated photonic crystals. A 2D air hole array of triangular symmetry with a hole-to-hole pitch of ∼500 nm has been successfully fabricated in a large circular area of 1 cm diameter. Resonant features observed in reflectance spectra of our slabs are found to depend on the exposure time, and can be tuned over a range of near-infrared frequencies. © 2010 American Chemical Society.