ANOMALOUS REFRACTION AND FOCUSING OF SH WAVES IN SOLIDS WITH ELASTIC METASURFACE

摘要：

　　The extension of the concept of acoustic metasurface to elastic waves in solids is considered by proposing the elastic SH wave metasurface.The designed metasurface, fabricated with two solid materials, can approximately realize impedance matching.The ability of steering SH waves is demonstrated numerically.Firstly, according to the generalized Snells law (GSL), the designed metasurface deflect the vertical incident waves in desired directions.Then, the metasurface with the effect of focusing elastic SH waves is design to achieve a very narrow focal point.The current study can be potentially useful for applications such as directional detection, enhanced sensing and energy harvesting.

关键词： SH wave Anomalous refraction Metasurface Phase discontinuities Focusing

作者: Li-yun CAO Zhi-chun YANG Yan-long XU

作者单位: School of Aeronautics, Northwestern Polytechnical University, Xian, P.R.China, 710072

会议类型: 国际会议

会议名称: The 2017 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2017全国压电和声波理论及器件技术研讨会)

会议地点: 成都

会议语种:英文

页码: 95-98

在线出版日期: 2017-10-27（万方平台首次上网日期，不代表论文的发表时间）