EurekAlert  November 18, 2019 Numerous examples of photonic band gaps have been shown previously in various types of crystals. With computational simulations researchers at Princeton University have shown that a Weaire-Phelan foam would allow some frequencies of light to pass through while completely reflecting others making it a photonic band gap material. The photonic band gap has a maximal size of 16.9% (at a volume fraction of 21.6% for a dielectric contrast ε=13) and a high degree of isotropy. With further development, the foam could transport and manipulate light used in telecommunications. Photonic band gap materials could guide the light […]