Ji Zhuoyu, Li Hongxiang, Liu Yaling, Hu Wenping, Liu Yunqi
Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China. Graduate School of Chinese Academy of Sciences, Beijing 100039, People's Republic of China.
Nanotechnology. 2008 Apr 2;19(13):135602. doi: 10.1088/0957-4484/19/13/135602. Epub 2008 Feb 26.
In this paper we describe a fractal assembly of copper nanoparticles on different substrates by controlling the chemical replacement reaction. Through calculation, we found that the 'fractal dimensions' of copper dendrites synthesized by us were about 1.832, which agreed well with the 'fractal dimensions' of natural fern leaves (fractal dimension, 1.826), suggesting that the fern fractal model was useful to describe the self-assembly of our copper nanoparticles during the chemical replacement reaction process. These results will be beneficial for the understanding of the role that highly nonequilibrium conditions play in the formation of fractal clusters as well as the self-assembly mystique of metallic nanoparticles in nonequilibrium conditions and also helpful in the future assembly of complicated nanoarchitectures of metallic nanoparticles for potential applications.
在本文中，我们通过控制化学置换反应描述了铜纳米颗粒在不同基底上的分形组装。通过计算，我们发现我们合成的铜树枝状晶体的“分形维数”约为1.832，这与天然蕨类叶片的“分形维数”（分形维数为1.826）非常吻合，表明蕨类分形模型有助于描述化学置换反应过程中我们的铜纳米颗粒的自组装。这些结果将有助于理解高度非平衡条件在分形簇形成中所起的作用，以及金属纳米颗粒在非平衡条件下的自组装奥秘，也有助于未来组装用于潜在应用的复杂金属纳米颗粒纳米结构。
