Shiomi Shohei, Shamsuri Siti Rahmah, Matsubara Eiichiro
Metallic Materials Lab., Kyoto Municipal Institute of Industrial Technology and Culture, Kyoto, Japan.
Nanotechnology. 2020 Sep 4;31(36):365602. doi: 10.1088/1361-6528/ab93ef. Epub 2020 May 18.
The effect of the external magnetic field strength on the morphology of metal nickel (Ni) nanowires synthesized via electroless deposition is investigated. Under strong magnetic fields, Ni nanoparticles, precursors of Ni nanowires, easily align along the magnetic field to form straight nanowires with smooth surfaces. In contrast, under weak magnetic fields, branched Ni nanowires with rough surfaces are formed. By leveraging this magnetic effect on the morphology of Ni nanowires, simply changing the external magnetic field can synthesize various types of Ni nanowire nonwovens. Furthermore, different forms of Ni nanowires were grown on the sheet by the similar electroless deposition reaction on a non-magnetic copper metal sheet. The macroscopic morphology of this composite is closely correlated with the microstructures of Ni nanowires.
研究了外部磁场强度对通过化学沉积合成的金属镍（Ni）纳米线形态的影响。在强磁场下，Ni纳米颗粒（Ni纳米线的前驱体）容易沿磁场排列，形成表面光滑的直纳米线。相比之下，在弱磁场下，会形成表面粗糙的分支状Ni纳米线。通过利用这种对Ni纳米线形态的磁效应，简单地改变外部磁场就可以合成各种类型的Ni纳米线非织造布。此外，通过在非磁性铜金属片上进行类似的化学沉积反应，在该片上生长出了不同形态的Ni纳米线。这种复合材料的宏观形态与Ni纳米线的微观结构密切相关。
