Kim Jung Hoon, Kim Soo Suk, Yoon Chong Seung
Division of Materials Science and Engineering, Hanyang University, Seoul 133-791, Korea.
Nanotechnology. 2008 Nov 19;19(46):465601. doi: 10.1088/0957-4484/19/46/465601. Epub 2008 Oct 22.
Silicon oxide nanowires were decorated with magnetically hard 3-5 nm-sized CoPt nanoparticles using a simple physical deposition system without any pretreatment of the nanowire surface. High curvature of the nanowire surface together with the weak metal-substrate interaction helped to maintain discrete particle morphology with spherical shapes during deposition. The weak interaction also allowed the preferential nucleation of the deposited film on the pre-existing particles so that the film deposition can be repeated in order to increase the particle size without significantly altering the particle morphology. We expect that this method can be easily extended to create other metal nanoparticle-decorated nanowires.
使用简单的物理沉积系统，在未对纳米线表面进行任何预处理的情况下，用尺寸为3 - 5纳米的硬磁CoPt纳米颗粒对氧化硅纳米线进行修饰。纳米线表面的高曲率以及较弱的金属 - 基底相互作用，有助于在沉积过程中保持具有球形形状的离散颗粒形态。这种弱相互作用还使得沉积膜在预先存在的颗粒上优先成核，从而可以重复进行膜沉积以增加颗粒尺寸，而不会显著改变颗粒形态。我们期望这种方法能够轻松扩展，以制备其他金属纳米颗粒修饰的纳米线。
