Responsive microstructures on organic-inorganic hybrid films
Responsive microstructures on organic-inorganic hybrid films
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有机-无机杂化薄膜的响应微结构
DOI：
10.1007/s10971-014-3301-0
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
Innocenzi P.
中科院分区：
文献类型：
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作者：
Takahashi M.;Suzuki K.;Tokudome Y.;Malfatti L.;Innocenzi P.
在有机-无机杂化薄膜上制备了具有形状记忆功能的微周期结构。微尺度结构通过经由刚性表面层的屈曲形成褶皱来获得。表面改性层通过表面光聚合或通过混合膜的氧化获得。微尺度结构通过底层经由凝胶化的收缩而自发地形成。具有亲水性可溶胀聚合物的二氧化钛或二氧化硅基膜上的表面微结构表现出湿度响应，即，形状记忆效应。当表面微观结构消失时观察到这一点，随后随着周围湿度的循环变化而恢复。微辊也通过表面改性层的选择性溶胀来制造。
Micro-periodic structures exhibiting shape memory have been fabricated on organic–inorganic hybrid films. The microscale structures are obtained by forming wrinkles via buckling of the stiff surface layer. The surface-modified layers are obtained by surface photopolymerization or by oxidation of the hybrid films. The microscale structures are spontaneously formed by the shrinkage of the underlayer via gelation. The surface microstructures on titania- or silica-based films with hydrophilic swellable polymers exhibit a humidity response, i.e., a shape memory effect. This is observed when the surface microstructure disappears and is subsequently recovered with cyclic variation of the surrounding humidity. Micro-rolls are also fabricated by the selective swelling of surface-modified layers.