Fig. 1. W18O49 nanowires and Ag NWs by solvothermal preparation co-assembled on PET substrate to obtain flexible color-changing film[4] (a) Schematic illustration of the curved Ag and W18O49 NW film with electrochromic property; (b,c) The film attached on the curved surface of the beaker before (bleached state) and after (colored state) applying voltage; (d) In situ electrical resistance change of flexible electrochromic film after 0, 100, 200, 300, 500, and 1000 bending cycles; (e) Switching behaviors of the ECD after 0, 100, 200, 300, 400, 500, and 1000 bending cycles
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