Self-assembled patterns of nanospheres with symmetries from submicrons to centimeters
Self-assembled patterns of nanospheres with symmetries from submicrons to centimeters
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DOI：
10.1063/1.1851002
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发表时间：
2005-01-17
影响因子：
4
通讯作者：
Backman, V
中科院分区：
文献类型：
--
作者：
Chen, K;Taflove, A;Backman, V
我们报告的图案形成过程中干燥的一张水悬浮液的纳米球。由纳米球自组装的结构跨越几厘米，并在纳米到厘米的尺度上表现出有序性，尽管基底没有预定义的图案。在这些结构中，可以识别出几种规则的图案，包括由裂纹网络产生的二维周期性光栅，其特征空间频率线性地取决于蒸发速度，以及三维花状结构。这种现象潜在地提供了一种简单且廉价的方法来生长具有独特电磁和/或生物特性的结构。(C)2005年美国物理学会。
We report pattern formations during the drying of a sheet of an aqueous suspension of nanospheres. The structures self-assembled by nanospheres span several centimeters and exhibit order at scales ranging from nanometers to centimeters, although the substrate has no predefined pattern. Within these structures, several regular patterns can be identified, including two-dimensional periodic gratings generated by crack networks with a characteristic spatial frequency linearly depending on the evaporation speed, and three-dimensional flower-like structures. This phenomenon potentially provides a simple and inexpensive method to grow structures having unique electromagnetic and/or biological properties. (C) 2005 American Institute of Physics.