Zhou Junxiao, Tian Fanglin, Hu Jie, Shi Zhixia Linda, Godinez Veronica Gomez, Tsai Din Ping, Liu Zhaowei
Department of Electrical and Computer Engineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA.
Department of Electrical Engineering, City University of Hong Kong, Kowloon, Hong Kong, 999077, China.
Adv Mater. 2024 Aug;36(32):e2402751. doi: 10.1002/adma.202402751. Epub 2024 Jun 6.
The dual-focus vision observed in eagles' eyes is an intriguing phenomenon captivates scientists since a long time. Inspired by this natural occurrence, the authors' research introduces a novel bifocal meta-device incorporating a polarized camera capable of simultaneously capturing images for two different polarizations with slightly different focal distances. This innovative approach facilitates the concurrent acquisition of underfocused and overfocused images in a single snapshot, enabling the effective extraction of quantitative phase information from the object using the transport of intensity equation. Experimental demonstrations showcase the application of quantitative phase imaging to artificial objects and human embryonic kidney cells, particularly emphasizing the meta-device's relevance in dynamic scenarios such as laser-induced ablation in human embryonic kidney cells. Moreover, it provides a solution for the quantification during the dynamic process at the cellular level. Notably, the proposed eagle-eye inspired meta-device for phase imaging (EIMPI), due to its simplicity and compact nature, holds promise for significant applications in fields such as endoscopy and headsets, where a lightweight and compact setup is essential.
鹰眼中观察到的双焦点视觉是一个长期以来吸引科学家的有趣现象。受这种自然现象的启发，作者的研究引入了一种新型双焦点超材料器件，该器件包含一个偏振相机，能够同时以略有不同的焦距捕获两种不同偏振的图像。这种创新方法有助于在单次快照中同时获取欠聚焦和过聚焦图像，从而能够使用强度传输方程从物体中有效提取定量相位信息。实验演示展示了定量相位成像在人造物体和人胚胎肾细胞中的应用，特别强调了超材料器件在动态场景中的相关性，例如人胚胎肾细胞中的激光诱导消融。此外，它为细胞水平的动态过程中的量化提供了一种解决方案。值得注意的是，所提出的受鹰眼启发的用于相位成像的超材料器件（EIMPI），由于其简单性和紧凑性，在诸如内窥镜检查和头戴式设备等领域具有重要应用前景，在这些领域中，轻巧紧凑的设置至关重要。
