Negative refractions by triangular lattice sonic crystals in partial band gaps*
Alagoz S.a)†, Alagoz B. B.b), Sahin A.a), Nur S.c)
       
Distributions of average pressure amplitudes in the cases of (a) upside wave blockading, (b) downside wave blockading, (c) wave focalization (without the blockading). (d) The sum of focalization region amplitudes in panels (a) and (b). (e) A close view of focalization pattern obtained in panel (c).