Nanoimprinted nanocomposite membrane-type metamaterials

摘要

We present methods to realize nanoimprinted nanocomposite membrane-type metamaterials with tuned refractive index.Here, the idea is separation of the cured UV-curable resist from top and bottom stamps to make freestanding patternedmembranes with controlled thickness. Manipulating the refractive index of the resist material is implemented bychanging the volume fraction of nanoparticles in the host polymer. These patterned membrane devices are applied inguided-mode resonance devices exhibiting effective spectral signatures in subwavelength periodic media. We presentnumerous simulated and fabricated nanomembranes with excellent resonance characteristics.