论文标题
确定性障碍在多层介电交流材料中深层次波长尺度上的影响
Effects of deterministic disorder at deeply subwavelength scales in multilayered dielectric metamaterials
论文作者
论文摘要
普遍的理解是，在深层次波长层的状态下，多层介电的超材料是通过基于不依赖空间布置的混合公式的简单有效中等模型来精确描述的。在最近的研究表明，该前提崩溃的周期性和周期性（有序或随机）场景的违反直觉实例，我们在这里研究了确定性疾病的效果。特别是对基于Golay-Rudin-Shapiro序列的模型的特定引用，我们说明了某些特殊的边界效应可能发生在有限尺寸的介电多层中，从而导致异常的轻型传播特性与常规有效中等理论的预测呈鲜明对比。通过参数和比较研究，我们阐明了潜在的物理机制，还强调了相对于先前研究的几何形状的相似性和差异。我们的结果可能激发了对光学感测，开关和激光的潜在应用。
It is common understanding that multilayered dielectric metamaterials, in the regime of deeply subwavelength layers, are accurately described by simple effective-medium models based on mixing formulas that do not depend on the spatial arrangement. In the wake of recent studies that have shown counterintuitive examples of periodic and aperiodic (orderly or random) scenarios in which this premise breaks down, we study here the effects of deterministic disorder. With specific reference to a model based on Golay-Rudin-Shapiro sequences, we illustrate certain peculiar boundary effects that can occur in finite-size dielectric multilayers, leading to anomalous light-transport properties that are in stark contrast with the predictions from conventional effective-medium theory. Via parametric and comparative studies, we elucidate the underlying physical mechanisms, also highlighting similarities and differences with respect to previously studied geometries. Our outcomes may inspire potential applications to optical sensing, switching and lasing.
