林梦兰博士关于基于可重构反射面的超震荡透镜的相关工作发表在期刊AWPL上
- 发布时间：
- 2023-05-16
- 文章标题：
- 林梦兰博士关于基于可重构反射面的超震荡透镜的相关工作发表在期刊AWPL上
- 内容：
论文题目：Reconfigurable Near-Field Focusing Reflector Based on Superoscillation Mechanism
摘要（英文）：Superoscillation is an extraordinary phenomenon capable of generating small-size focusing spots, which can be used for super-resolution focusing and imaging. Herein, we elaborate on a reconfigurable near-field focusing reflector based on the superoscillation principle, where the focal position and operation frequencies are modulated by the dynamic phase-compensation mechanism of an engineered metamirror. A varactor diode is embedded into each resonant meta-atom, enabling to achieve nearly 340° phase coverage. To validate the proposed reflector, the fabricated metamirror platform is experimentally measured in an anechoic chamber. The results show that the near-field focusing maintains sub-diffraction property when the focal distances and frequencies are flexibly driven by the metamirror. Such a focusing reflector holds great integration potential to imaging devices for its tunability, high resolution, and non-narrow band features.
摘要（中文）：在本论文中，我们详细描述了一个基于超震荡原理的可重构近场聚焦反射器，其中焦距和工作频率可以通过动态相位补偿机制调控。每个可重构谐振单元嵌入一个变容二极管进而实现接近340°的反射相位覆盖。为了验证提出的反射器，对制备的反射超表面平台在微波暗室中进行测试。其结果表明当改变聚焦位置和频率时，该近场聚焦保持超衍射特性。由于其的可调谐性，高分辨率和非窄带特性，该聚焦反射面在成像设备中具有极高的集成可能。
