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. 2014 Jun 23;4:5387. doi: 10.1038/srep05387

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(a). Electrical characteristics of a R2R coated electrochromic display. (b). The speed of displaying signage under various LiClO₄concentrations in the PEO gel. (c). R2R samples by combining R2R gravure printed rectenna and R2R coated electrochromic signage (Demonstration video is available by clicking image).