利用传递矩阵法,研究了一维声子晶体表面存在的表面局域态对水平剪切波传输特性的影响.由于表面局域态的存在,声波的透过率出现共振峰.共振峰的极值与入射角度和声子晶体层数有关,合适的入射角度和层数可以使声波完全透射.当入射角在一定范围内连续变化时,在较宽频率范围内均出现较大透过率.声子晶体的这一特性可以应用于高性能的阻抗匹配材料和声波滤波器中.
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