Planar graphene metalens has demonstrated advantages of ultrathin thickness (200 nm), high focusing resolution (343 nm) and efficiency (>32%) and robust mechanical strength and flexibility. However, diffraction-limited imaging with such a graphene metalens has not been realized, which holds the key to designing practical integrated imaging systems. In this work, the imaging rule for graphene metalenses is first derived and theoretically verified by using the Rayleigh-Sommerfeld diffraction theory to simulate the imaging performance of the 200 nm ultrathin graphene metalens. The imaging rule is applicable to graphene metalenses in different immersion media, including water or oil. Based on the theoretical prediction, high-resolution imaging using the graphene metalens with diffraction-limited resolution (500 nm) is demonstrated for the first time. This work opens the possibility for graphene metalenses to be applied in particle tracking, microfluidic chips and biomedical devic...

中文翻译：

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石墨烯金属离子的衍射限制成像

平面石墨烯金属元素已显示出超薄厚度（200 nm），高聚焦分辨率（343 nm）和效率（> 32％）以及强大的机械强度和柔韧性的优势。然而，尚未实现使用这种石墨烯金属的衍射极限成像，这是设计实用的集成成像系统的关键。在这项工作中，首先导出了石墨烯金属质感的成像规则，并通过使用瑞利-索默菲尔德衍射理论模拟200 nm超薄石墨烯金属质感的成像性能进行了理论验证。成像规则适用于不同浸入介质（包括水或油）中的石墨烯金属感。根据理论预测，首次展示了使用具有衍射极限分辨率（500 nm）的石墨烯金属元素的高分辨率成像。这项工作为将石墨烯金属传感应用于颗粒跟踪，微流控芯片和生物医学装置提供了可能。