构造了三种慢变结构的光子晶体,利用光学传输矩阵方法对它们的光子能带特性进行了研究,发现所提出的结构能够十分有效地拓宽光子晶......

　　We present a study on the existence of Dirac cones in two-dimensional phononic crystals made of rotable regular-hexa......