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We report a light-pen input device with an integrated electrochromic display. The former is a photosensor array, based on a blend of bacterioRhodopsin (bR) and the conducting polymer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), while the latter is based on PEDOT:PSS. The use of organic materials allows the entire device to be deposited on a thin, mechanically flexible plastic...
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