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齐共金, 杨盛良, 赵 恂. 新型功能材料——声子晶体[J]. 物理, 2002, 31(09).
引用本文: 齐共金, 杨盛良, 赵 恂. 新型功能材料——声子晶体[J]. 物理, 2002, 31(09).
A novel type of functional material——phononic crystals[J]. PHYSICS, 2002, 31(09).
Citation: A novel type of functional material——phononic crystals[J]. PHYSICS, 2002, 31(09).

新型功能材料——声子晶体

A novel type of functional material——phononic crystals

  • 摘要: 声子晶体是20世纪90年代初提出的一种新型声学功能材科,这种周期性弹性结构具有许多重要性质,如声波带隙特性,即处于禁带频率范围内的振动或声波将被禁止在晶体中传播.通过求解声波在晶体中的运动方程可以设计一定的声子禁带和允带,而声子禁带与声波异质结构中声子的安德森局域化问题密切相关.文章重点阐述了声子晶体的主要特征、理论研究方法、潜在应用及前景展望.

     

    Abstract: Phononic crystals are a novel type of acoustic functional material proposed in the early 1990′s. This kind of periodically elastic structure exhibits many important properties, such as phononic bandgaps, in which the propagation of vibration and sound are forbidden. The position of the bandgaps and passbands can be engineered by calculating the acoustic wave equations of the crystals. The existence of these bandgaps is closely associated with the Anderson localization of phonons in inhomogeneous media. The main features, theoretical methods used to study them, potential applications and future prospects are discussed.

     

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