论文标题
由双异性偏移支撑的各种表面波
Diverse surface waves supported by bianisotropic metasurfaces
论文作者
论文摘要
结构化金属表面支持的表面波，即跨膜，最近引起了广泛的关注。对于从集成的光子电路到成像和各种频率制度的生物感密度的各种应用，它们都有希望。在这项工作中，我们表明具有多种极化构型的表面状态可以由由单层的双异构性超材料元素组成的元表面支持。该结构具有D2D对称性，其中包括XZ和YZ平面中的镜像对称性，以及沿Y = +-X轴的C2旋转对称性。由于这种独特的对称性，元曲面沿着KX和KY方向支持横向电气（TE）和横向磁性（TM）波，而纯纵向模式以及沿ky = +-KX方向的纯纵向模式和椭圆极化的横向电磁（TEM）模式。表面模式在跨面上的多功能性可能导致新的表面波现象和设备应用。
Surface waves supported by structured metallic surfaces, i.e. metasurfaces, have drawn wide attention recently. They are promising for various applications ranging from integrated photonic circuits to imaging and bio-sensing in various frequency regimes. In this work, we show that surface states with diverse polarization configurations can be supported by a metasurface consisting of a single layer of bianisotropic metamaterial elements. The structure possesses D2d symmetry, which includes mirror symmetry in the xz and yz plane, and C2 rotational symmetry along y = +-x axis. Due to this unique symmetry, the metasuface supports both transverse electric (TE) and transverse magnetic (TM) waves along kx and ky directions, while a purely longitudinal mode and an elliptically polarized transverse electromagnetic (TEM) mode along ky = +-kx directions. The versatility of the surface modes on the metasurface may lead to new surface wave phenomena and device applications.
