New Route to Produce Dry Colloidal Crystals without Cracks
New Route to Produce Dry Colloidal Crystals without Cracks
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DOI：
10.1021/la9033854
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发表时间：
2009-12-01
期刊：
影响因子：
3.9
通讯作者：
Sawada, Tsutomu
中科院分区：
文献类型：
--
作者：
Kanai, Toshimitsu;Sawada, Tsutomu
我们报道了一种制备蛋白石薄膜的新方法，在这种方法中，粒子被聚合物凝胶结合。固定在水凝胶中的松散堆积的胶体晶体被均匀收缩和干燥，并转化为无裂纹的蛋白石薄膜。得到的薄膜具有均匀的衍射色和从起始态继承的优良的透射谱特性。光学阻带波长可通过改变凝胶聚合物的量来调节。
We report a new route for fabricating opal films in which the particles are bounded by polymer gel. A loosely packed colloidal crystal immobilized in a hydrogel is homogeneously shrunk and dried and converted into a crack-free opal film. The obtained film shows a uniform diffraction color and excellent transmission spectral properties inherited from the starting state. The optical stop band wavelength is adjustable by varying the amount of gel-polymer.