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首页> 外文会议>2014 International Symposium on Optomechatronic Technologies >Effects of Aspect Ratio and Orientation Angle of Rectangular Inclusion on Self-Collimation Performance of Two-Dimensional Phononic Crystals
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Effects of Aspect Ratio and Orientation Angle of Rectangular Inclusion on Self-Collimation Performance of Two-Dimensional Phononic Crystals

机译：矩形夹杂物的纵横比和取向角对二维声子晶体自准直性能的影响

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摘要

The present study proposes a method for improving the self-collimation performance of square array phononic crystals by means of orientated rectangular inclusions. Finite element simulations are performed to investigate the effects of the aspect ratio and orientation angle of rectangular inclusions on the self-collimation performance. The simulation results show that the proposed design provides an efficient self-collimation performance over both a high working frequency range and a wide incident angle range. Importantly, it is also shown that through an appropriate specification of the inclusion aspect ratio and orientation angle, both direction and degree of self-collimation beam and can be effectively manipulated. Overall, the present results show that the proposed design has significant potential for the realization of such applications as acoustic waveguides, collimators, and other phononic crystals-based systems.
机译：本研究提出了一种通过定向矩形夹杂物改善方阵声子晶体自准直性能的方法。进行有限元模拟以研究矩形夹杂物的纵横比和取向角对自准直性能的影响。仿真结果表明，提出的设计在高工作频率范围和宽入射角范围内均提供了有效的自准直性能。重要的是，还表明，通过适当地规定夹杂物的长宽比和取向角，可以有效地操纵自准直光束的方向和程度。总的来说，目前的结果表明，提出的设计对于实现诸如声波导管，准直仪和其他基于声子晶体的系统等应用具有巨大的潜力。

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