Observation of bound states in Lieb photonic lattices
  We present the first experimental demonstration of a new type of bound states in the continuum, namely, compacton-like linear states in flat bands lattices. To this end, photonic Lieb lattices are employed, which exhibit three tight-binding bands, with one being perfectly flat. Our results could be of great importance for fundamental physics as well as for various applications concerning imaging and data transmission. 
Rodrigo A. Vicencio, Camilo Cantillano, Luis Morales-Inostroza,   Bastian Real, Steffen Weimann, Alexander Szameit, and Mari...
physics.optics cond-mat.mes-hall