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Woodpile structures of PEGda with WSPI as photo initiator at a water content of 50 wt%. The laser power range was 10 to 300 mW (Δ=40 mW) and the writing speed was 1 to 10 mm/s (Δ=3 mm/s). [159] This image was adapted with the permission of the publisher and the authors of Ref. [159]. Copyright 2012, SPIE.
