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- W2983295246 abstract "Abstract Tomography is an informative imaging modality that is usually implemented by mechanical scanning, owing to the limited depth-of-field (DOF) in conventional systems. However, recent imaging systems are working towards more compact and stable architectures; therefore, developing nonmotion tomography is highly desirable. Here, we propose a metalens-based spectral imaging system with an aplanatic GaN metalens (NA = 0.78), in which large chromatic dispersion is used to access spectral focus tuning and optical zooming in the visible spectrum. After the function of wavelength-switched tomography was confirmed on cascaded samples, this aplanatic metalens is utilized to image microscopic frog egg cells and shows excellent tomographic images with distinct DOF features of the cell membrane and nucleus. Our approach makes good use of the large diffractive dispersion of the metalens and develops a new imaging technique that advances recent informative optical devices." @default.
- W2983295246 created "2019-11-22" @default.
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- W2983295246 date "2019-11-06" @default.
- W2983295246 modified "2023-10-14" @default.
- W2983295246 title "Spectral tomographic imaging with aplanatic metalens" @default.
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- W2983295246 doi "https://doi.org/10.1038/s41377-019-0208-0" @default.
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