A hybrid lens to realize electrical real-time super-resolution Imaging
crossref(2024)
摘要
Abstract Real-time dynamic super-resolution focusing technology is crucial for various applications, particularly in super-resolution imaging. However, the diffraction limit significantly impedes the achievement of real-time dynamic super-resolution imaging. Prior studies within this domain, such as super-resolution fluorescence imaging and structural illumination microscopy, heavily rely on fluorescent labels and intricate algorithms. This article proposes a novel approach to achieving real-time dynamic super-resolution imaging at microwave frequency by integrating the Mikaelian lens derived from conformal transformation optics with the space-time-coding metasurface antenna. Real-time dynamic super-resolution focusing with a resolution ranging from 0.3λ to 0.4λ is demonstrated at the periphery of the Mikaelian lens. The proposed hybrid lens exhibits the capacity to discern features separated by about one-third of a wavelength with high precision. Our work offers a universal solution for achieving dynamic real-time super-resolution imaging electrically, which can be extended to terahertz waves, visible light, and other wave fields, such as acoustic and flexural waves
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