The quick photoresponse of thin hydrogel layers composed of thermoresponsive poly(N-isopropylacrylamide) with an acrylated spirobenzopyran chromophore incorporated in the polymer backbone is reported. The instant formation of microrelief on a thin hydrogel layer is demonstrated by means of micropatterned light irradiation.
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Szilágyi et al. (2007) studied this question.
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