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In article number 1900126, Xu Liu, Qing Yang, and co‐workers present a waveguide chip design that permits label‐free superresolution imaging. The method captures all sample spatial frequencies over a large bandwidth, permitting artifact‐free reconstruction. Two‐dimensional sample structures are imaged without distortion and reconstructed over large field of views at sub‐wavelength resolution. The...
Wide field‐of‐view (FOV), label‐free, super‐resolution imaging is demonstrated using a specially designed waveguide chip that can illuminate a sample with multicolor evanescent waves travelling along different directions. The method is enabled by a polymer fluorescent film that emits over a broad wavelength range. Its polygonal geometry ensures coverage over all illumination directions, enabling high‐fidelity...
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