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Fig. 3 | PhotoniX

Fig. 3

From: Realization of high aspect ratio metalenses by facile nanoimprint lithography using water-soluble stamps

Fig. 3

a-c SEM images of HAR-metalens. a Master stamp of the metalens (Length = 320 nm, Width = 120 nm, Height = 700 nm, Aspect Ratio (H/W) = 5.8). b PVA replica mold. c Replicated metalens. d-g Photographs of printed 10 mm metalenses on various substrates: (d) glass substrate; (e) flexible polyethylene terephthalate (PET) film; (f) convex substrate; and (g) concave substrate

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