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胶体晶体及三维有序多孔材料的制备 总被引:4,自引:0,他引:4
以粒径为80~320nm的单分散苯乙烯/苯乙烯磺酸钠共聚微球为原料,采用一种全新而简单的制备高度有序胶体晶体模板的方法,利用静电相互作用、表面张力以及蒸发过程中的离子扩散等作用在液面形成了不合溶剂的高度有序的胶体晶体.将溶胶-凝胶前驱液在毛细效应作用下渗入胶体晶体间隙,待前驱液固化后,经煅烧去除苯乙烯微球,制备出了具有三维有序结构的多孔材料——倒置蛋白石. 相似文献
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A simple all-optical switch based on photoinduced birefringence effect is demonstrated in azo dye (DR1) doped polymer (PMMA) thin films. The all-optical switching effect has been studied at different control beam power and different temperatures of the sample. With a control power of 30.7 mW and at 56 ℃, the response time of the switching is less than 5 ms, and the depth of the modulation reaches 80%. 相似文献
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