Metalenses have exhibited significant promise across various applications due to their ultrathin,lightweight,and flat architecture,which allows for integration with microelectronic devices.However,their overall imagin...Metalenses have exhibited significant promise across various applications due to their ultrathin,lightweight,and flat architecture,which allows for integration with microelectronic devices.However,their overall imaging capabilities,particularly in microscopy,are hindered by substantial off-axis aberrations that limit both the field of view(FOV)and resolution.To address these issues,we introduce a meta-microscope that utilizes a metalens doublet incorporated with annular illumination,enabling wide FOV and high-resolution imaging in a compact design.The metalens-doublet effectively mitigates off-axis aberrations,whereas annular illumination boosts resolution.To validate this design,we constructed and tested the meta-microscope system,attaining a record resolution of 310 nm(for metalens image)with a 150μm FOV at 470 nm wavelength.Moreover,by utilizing the integration of metasurface,we implemented a compact prototype achieving an impressive 1-mm FOV with a resolution of 620 nm.Our experimental results demonstrate high-quality microscopic bio-images that are comparable to those obtained from traditional microscopes within a compact prototype,highlighting its potential applications in portable and convenient settings,such as biomedical imaging,mobile monitoring,and outdoor research.展开更多
基金the Micro-fabrication Center of the National Laboratory of Solid State Microstructures(NLSSM)for technique supportfinancial support from the National Key Research and Development Program of China(Grant Nos.2024YFA1012600 and 2022YFA1404301)+1 种基金National Natural Science Foundation of China(Grant Nos.62325504,62305149,92250304,and 62288101)Dengfeng Project B of Nanjing University。
文摘Metalenses have exhibited significant promise across various applications due to their ultrathin,lightweight,and flat architecture,which allows for integration with microelectronic devices.However,their overall imaging capabilities,particularly in microscopy,are hindered by substantial off-axis aberrations that limit both the field of view(FOV)and resolution.To address these issues,we introduce a meta-microscope that utilizes a metalens doublet incorporated with annular illumination,enabling wide FOV and high-resolution imaging in a compact design.The metalens-doublet effectively mitigates off-axis aberrations,whereas annular illumination boosts resolution.To validate this design,we constructed and tested the meta-microscope system,attaining a record resolution of 310 nm(for metalens image)with a 150μm FOV at 470 nm wavelength.Moreover,by utilizing the integration of metasurface,we implemented a compact prototype achieving an impressive 1-mm FOV with a resolution of 620 nm.Our experimental results demonstrate high-quality microscopic bio-images that are comparable to those obtained from traditional microscopes within a compact prototype,highlighting its potential applications in portable and convenient settings,such as biomedical imaging,mobile monitoring,and outdoor research.
