Photonic Crystals: Template‐Directed Directionally Solidified 3D Mesostructured AgCl–KCl Eutectic Photonic Crystals (Adv. Mater. 31/2015)

New optically active three-dimensionally (3D) mesostructured AgCl–KCl eutectic photonic crystals and a 3D mesoporous AgCl inverse opal structure emerge from the combination of the characteristic periodic structure of a 3D template, and the native self-organizing structure of a AgCl–KCl eutectic. This is described by K. Thornton, P. V. Braun, and co-workers on page 4551.