Dirac cones at k→=0 in acoustic crystals and zero refractive index acoustic materials
نویسندگان
چکیده
منابع مشابه
Dirac directional emission in anisotropic zero refractive index photonic crystals
A certain class of photonic crystals with conical dispersion is known to behave as isotropic zero-refractive-index medium. However, the discrete building blocks in such photonic crystals are limited to construct multidirectional devices, even for high-symmetric photonic crystals. Here, we show multidirectional emission from low-symmetric photonic crystals with semi-Dirac dispersion at the zone ...
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ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 2012
ISSN: 0003-6951,1077-3118
DOI: 10.1063/1.3686907