Weng Yu-Yan, Zhang Bo, Fu Shao-Jie, Wang Mu, Peng Ru-Wen, Ma Guo-Bin, Shu Da-Jun, Ming Nai-Ben
National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China.
Phys Rev E Stat Nonlin Soft Matter Phys. 2010 May;81(5 Pt 1):051607. doi: 10.1103/PhysRevE.81.051607. Epub 2010 May 25.
We report here a unique in-plane self-templating electrochemical growth of arrays of copper nanopearl chains from an ultrathin layer of CuSO4 electrolyte. Scanning electron microscopy indicates that the electrodeposit filaments form equally spaced bundles, which consist of long, straight, pearl-chain-like copper filaments with corrugated periodic structure. The bundle separation can be tuned by changing the applied electric current in electrodeposition. Experiments show that the periodic morphology on the nanopearl chain corresponds to the periodic distribution of copper and cuprous oxide. The mechanism for the bundle formation is discussed.
我们在此报告一种独特的面内自模板化电化学生长方法，可从超薄硫酸铜电解质层生长出铜纳米珍珠链阵列。扫描电子显微镜表明，电沉积细丝形成等间距束状结构，其由具有波纹状周期性结构的长直珍珠链状铜细丝组成。通过改变电沉积过程中的外加电流，可以调节束间距。实验表明，纳米珍珠链上的周期性形态对应于铜和氧化亚铜的周期性分布。文中还讨论了束状结构形成的机制。
