Abstract: Wave motion lies at the heart of many disciplines in the physical sciences and engineering. For example, problems and applications involving light, sound, heat, or fluid flow are all likely ...
SIAM Journal on Applied Mathematics, Vol. 77, No. 6 (2017), pp. 2119-2135 (17 pages) We study waves governed by the planar Helmholtz equation, propagating in an infinite lattice of subwavelength ...