Negative refractions by triangular lattice sonic crystals in partial band gaps*
Alagoz S.a)†, Alagoz B. B.b), Sahin A.a), Nur S.c)
       
A pressure field image for upside blockade (a) and its close view (b); a pressure field image for downside blockade (c) and its close view (d); a pressure field image for wave focusing by point source (e) and its close view (f), all of which are obtained from the FDTD simulations.