Fabrication of colloidal crystal heterostructures by a room temperature floating self-assembly method

Fabrication of colloidal crystal heterostructures by a room temperature floating self-assembly method
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室温浮动自组装法制备胶体晶体异质结构

DOI:
10.1016/j.matchemphys.2011.02.051
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发表时间:
2011-07
影响因子:
4.6
通讯作者:
Dong, Peng
Dong, Peng
中科院分区:
材料科学3区
文献类型:
--
作者:
Wang, Ai Jun;Chen, Sheng-Li;Dong, Peng

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利用本课课组最近开发的室温浮动自组装(RTFSA)方法制备了光子晶体异质结构。应用该方法,在无需特殊设备的情况下,在数十分钟内制备了面积为几平方厘米的蛋白石胶体晶体异质结构,并制备了由PS蛋白石和tio2逆蛋白石晶体膜组成的异质结构。PS蛋白石- tio2反蛋白石异质结构的SEM图像显示,该异质结构顶部蛋白石膜的有序生长几乎不受tio2反蛋白石膜裂纹的干扰。紫外可见透射光谱表明,光子异质结构存在两个光子带隙,两个光子带隙的相对位置可以通过制备光子异质结构的PS微球的尺寸来控制。
Photonic crystal heterostructures were fabricated through a room temperature floating self-assembly (RTFSA) method recently developed by our research group. Applying this method, opal colloidal crystal heterostructures of several square centimeters in area were fabricated within tens of minutes without special facilities, and a heterostructure composed of a PS opal and a TiO2inverse opal crystal films was fabricated. SEM image of the PS opal–TiO2inverse opal heterostructure showed the ordered growth of the top opal film of the heterostructure was hardly disturbed by the cracks in the TiO2inverse opal film. The UV–vis transmission spectra indicated that the photonic heterostructures had two photonic-band gaps, and the relative position of two photonic-band gaps can be controlled by the size of PS microspheres used to fabricated the photonic heterostructures.
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期刊: Colloids and Surfaces A: Physicochemical and Engineering Aspects
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