Light-propagation patterns in freestanding two-dimensional colloidal crystals
Light-propagation patterns in freestanding two-dimensional colloidal crystals
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DOI：
10.1016/j.colsurfa.2006.01.028
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发表时间：
2006-08
期刊：
影响因子：
--
通讯作者：
S. Matsushita;M. Shimomura
中科院分区：
文献类型：
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作者：
S. Matsushita;M. Shimomura
本文报道了独立的二维（2D）颗粒阵列的制备，其中的细颗粒以高度致密和定向的方式堆积。为了制造独立的2D阵列，检查了聚合物颗粒（3.06、1.034和0.491μm直径）的烧结过程。在玻璃基板上的烧结的2D颗粒阵列容易通过浸入水中作为独立膜剥离。独立的二维颗粒阵列在室温下足够稳定。由于它们的光学周期性，它们显示出彩虹色。为了确定这些独立的2D颗粒阵列的层数，在阵列中添加荧光聚苯乙烯颗粒。阵列中的荧光传播模式表明，独立膜是单层的。还检查了自支撑膜的透射光谱。
This paper reports the preparation of freestanding two-dimensional (2D) particle arrays, which fine particles are packed in highly dense and oriented manner. To fabricate freestanding 2D arrays, sintering process of the polymer particles (3.06, 1.034, and 0.491μm diameter) was examined. The sintered 2D particle arrays on glass substrates were easily peeled off as a freestanding film by soaking into water. The freestanding 2D particle arrays were stable enough in room temperature. They show the iridescent colors due to their optical periodicity. To convince the layer number of those freestanding 2D particle arrays, fluorescent polystyrene particles were added in the arrays. Fluorescent light propagation patterns in the arrays suggest that the freestanding films were monolayers. The transmission spectra of the freestanding film were also examined.