journal6 ›› 2005, Vol. 26 ›› Issue (1): 76-79.

• 重点学科 • 上一篇    下一篇

二维正方点阵固态声子晶体带隙研究

  

  1. (1.湘潭大学材料与光电物理学院,湖南 湘潭 411105;2.吉首大学物理科学与信息工程学院,湖南 吉首 416000)
  • 出版日期:2005-01-15 发布日期:2012-09-22
  • 作者简介:颜琳(1973-),女,湖南省娄底市人,吉首大学物理科学与信息工程学院讲师,硕士生,主要从事凝聚态物理、材料物理研究;赵鹤平(1966-),湖南省桑植县人,吉首大学物理科学与信息工程学院教授,博士,主要从事凝聚态物理、材料物理研究.
  • 基金资助:

    湖南省自然科学基金资助项目(00JJY2072);湖南省学科带头人资助项目(湘教通2002[187号])

Band Gap Calculation for Two-Dimensional Solid Phononic Crystals with Square Lattices

  1. (1.Faculty of Material Science and Photoelectronic Physics,Xiangtan University,Xiangtan,411105,Hunan China; 2.College of Physics Science and Information Engineering,Jishou University,Jishou 416000,Hunan China)
  • Online:2005-01-15 Published:2012-09-22

摘要:声子晶体对声子晶体带结构的研究具有极大的理论和应用价值.介绍了用平面波展开法计算二维正方点阵的固态声子晶体带隙的方法,研究不同截面形状的散射物对晶体带隙的影响.当填充分数F<0.5时,圆形截面散射物体系比正方形截面及长方形截面的体系有利于带隙产生,而当F>0.5时,则正方形截面的体系更优越.

关键词: 声子晶体, 带隙, 正方点阵, 平面波展开法

Abstract: The study of phononic crystals band gap will not only give rise to a new interesting theory,but also open up variety of possible application.The plane wave expansion method is introduced to calculate the band gap for two-dimensional solid phononic crystals with square lattices.The effects of different shapes of the scatterers’ section on band gaps are investigated.The calculated results show that when the scatterers’ filling fraction F<0.5,the circular section is easier to attain large band gaps than the square section and rectangle one;while when F>0.5,the square section is more favorable for the appearance of the band gaps.

Key words: phononic crystals, band gap, square lattice, plane wave expansion method

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