论文标题
表面瓦楞纸作为弹性光栅耦合器：通过选择性衍射对SV和P波的分裂
Surface corrugated laminates as elastic grating couplers: splitting of SV- and P-waves by selective diffraction
论文作者
论文摘要
选择性衍射的现象扩展到平面弹性波，我们设计了表面瓦楞纸周期性层压层，这些层压层层次融合了晶体动量转移，由于嵌入了矢量弹性系统中的丰富物理，因此导致频率，角度，角度和波浪型选择性衍射。与类似标量电磁耦合器相比，所得的设备是弹性的光栅耦合器，具有额外的功能，因为弹性耦合器具有通过选择性负折射的分裂和独立重定向的能力，通过选择性负折射，矢量弹性系统中存在的两个体波：压缩（P）和shear-evertical（Shear-Eversical（s v）。设计范式和解释是通过通过非二素化的传输矩阵方法获得同源轮廓来帮助的。
The phenomenon of selective diffraction is extended to in-plane elastic waves and we design surface corrugated periodic laminates that incorporate crystal momentum transfer which, due to the rich physics embedded within the vector elastic system, results in frequency, angle and wave-type selective diffraction. The resulting devices are elastic grating couplers, with additional capabilities as compared to analogous scalar electromagnetic couplers, in that the elastic couplers possess the ability to split and independently redirect, through selective negative refraction, the two body waves present in the vector elastic system: compressional (P) and shear-vertical (SV) elastic waves. The design paradigm, and interpretation, is aided by obtaining isofrequency contours via a non-dimensionalised transfer matrix method.
