Accession Number:

ADA622766

Title:

Self-assembled Tunable Photonic Hyper-crystals

Descriptive Note:

Journal article

Corporate Author:

DUKE UNIV DURHAM NC

Report Date:

2014-07-16

Pagination or Media Count:

12.0

Abstract:

We demonstrate a novel artificial optical material, the photonic hyper-crystal , which combines the most interesting features of hyperbolic metamaterials and photonic crystals. Similar to hyperbolic metamaterials, photonic hypercrystals exhibit broadband divergence in their photonic density of states due to the lack of usual diffraction limit on the photon wave vector. On the other hand, similar to photonic crystals, hyperbolic dispersion law of extraordinary photons is modulated by forbidden gaps near the boundaries of photonic Brillouin zones. Three dimensional selfassembly of photonic hyper-crystals has been achieved by application of external magnetic field to a cobalt nanoparticle-based ferrofluid. Unique spectral properties of photonic hyper-crystals lead to extreme sensitivity of the material to monolayer coatings of cobalt nanoparticles, which should find numerous applications in biological and chemical sensing.

Subject Categories:

  • Miscellaneous Materials
  • Crystallography
  • Electricity and Magnetism
  • Fiber Optics and Integrated Optics
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE