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A novel method for fabricating desired patterns of smart light‐modulation gels, which consist of thermoresponsive N‐isopropylacrylamide (NIPAM) gel particles containing pigment, was developed. The patterns were fabricated by photo‐patterning of dispersion of colored NIPAM gel particles in photosensitive poly(vinylalcohol)‐styrylpyridinium solution. The pattern showed drastic color changes in response to the surrounding temperature changes. By repeated cycles of the patterning method, several independent patterns that contained different color particles were fabricated. In addition, a thermosensor array was also fabricated, which was constructed with independent patterns containing colored NIPAM gel having different color‐changing temperatures. The patterning method studied here is considered to have strong potential to extend the application field of the smart light‐modulation gels.
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Tsutsui et al. (2006) studied this question.
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