Shojaienezhad, S.F.

[ 1 ] - Investigation tow of negative refraction characters in the three different 2D phononic crystals

In this paper, a two-dimensional phononic crystal comprising of steel rod in water is investigated. Three cross- sections for this rod are considered using finite element method (EFM). We plot the equifrequency surface of the first band, because of equifrequency surface convex around the edge of the first Brillouin Zone, we guess the negative effective phononic mass and so negative refraction. ...