CAJ | 학술논문

我们将展示一种控制声波反常折射的超表面，这种结构由空间变化的弯曲缝-亚单元组成，厚度处于深亚波长，通过精心优化微观结构，这种设计在控制声波波前方面表现出了优异的性能，我们实验测量的结果与理论预测吻合得很好。这项研究为众多日常生活应用开辟了新的途径，例如通过装上轻而薄的超表面结构来控制室内声场效应。
아문장전시일충공제성파반상절사적초표면，저충결구유공간변화적만곡봉-아단원조성，후도처우심아파장，통과정심우화미관결구，저충설계재공제성파파전방면표현출료우이적성능，아문실험측량적결과여이론예측문합득흔호。저항연구위음다일상생활응용개벽료신적도경，례여통과장상경이박적초표면결구래공제실내성장효응。
We demonstrate an effective design of metasurface structures that can deflect the transmitted airborne sound in an anomalous way. This flat lens, made of spatially varied coiling-slit subunits, has a thickness of deep subwavelength. By elaborately optimizing its microstructures, the proposed lens exhibits high performance in steering sound wavefronts. The experimental results are in excellent agreement with the theoretical predictions. This study may open new avenues for numerous daily life applications, such as controlling indoor sound effects by decorating rooms with light metasurface walls.