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Single-shot quantitative phase gradient microscopy using a system of multifunctional metasurfaces

Nature photonics, 2020-02, Vol.14 (2), p.109-114 [Peer Reviewed Journal]

2019© The Author(s), under exclusive licence to Springer Nature Limited 2019 ;The Author(s), under exclusive licence to Springer Nature Limited 2019. ;ISSN: 1749-4885 ;EISSN: 1749-4893 ;DOI: 10.1038/s41566-019-0536-x

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  • Title:
    Single-shot quantitative phase gradient microscopy using a system of multifunctional metasurfaces
  • Author: Kwon, Hyounghan ; Arbabi, Ehsan ; Kamali, Seyedeh Mahsa ; Faraji-Dana, MohammadSadegh ; Faraon, Andrei
  • Subjects: Biomedical materials ; Dielectrics ; Imaging ; Miniaturization ; Sensitivity
  • Is Part Of: Nature photonics, 2020-02, Vol.14 (2), p.109-114
  • Description: Quantitative phase imaging (QPI) of transparent samples plays an essential role in multiple biomedical applications, and miniaturizing these systems will enable their adoption into point-of-care and in vivo applications. Here, we propose a compact quantitative phase gradient microscope (QGPM) based on two dielectric metasurface layers, inspired by a classical differential interference contrast (DIC) microscope. Owing to the multifunctionality and compactness of the dielectric metasurfaces, the QPGM simultaneously captures three DIC images to generate a quantitative phase gradient image in a single shot. The volume of the metasurface optical system is on the order of 1 mm3. Imaging experiments with various phase resolution samples verify the capability to capture quantitative phase gradient data, with phase gradient sensitivity better than 92.3 mrad μm−1 and single-cell resolution. The results showcase the potential of metasurfaces for developing miniaturized QPI systems for label-free cellular imaging and point-of-care devices. Using two dielectric metasurface layers, a compact quantitative phase gradient microscope that can capture quantitative phase gradient images in a single shot is reported with phase gradient sensitivity better than 92.3 mrad μm−1 and single-cell resolution.
  • Publisher: London: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 1749-4885
    EISSN: 1749-4893
    DOI: 10.1038/s41566-019-0536-x
  • Source: AUTh Library subscriptions: ProQuest Central
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