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6 天
光控“智能胶水”:像壁虎一样“想黏就黏、想脱就脱”
纳米粒子能够吸收光,并将其转化为热,而N-异丙基丙烯酰胺基团能够通过热把自己从亲水状态变为疏水状态,从而降低水凝胶的储水能力,导致有一部分水从表面渗出。渗出的水诱导羧酸基团迁移到表面,也就是伞叶打开。反之,不用光照射,伞叶关闭。
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