Department of Physics, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.
Int J Nanomedicine. 2011;6:2221-4. doi: 10.2147/IJN.S23830. Epub 2011 Oct 10.
In the present work, we prepared silver nanoparticles by laser ablation of pure silver plate in ethanol and then irradiated the silver nanoparticles using a 532 nm Q-switched Nd:YAG pulsed laser. Transmission electron microscopic images of the sample after irradiation clearly showed formation of big structures, such as microrods and microbelts in ethanol. The obtained microbelts had a width of about 0.166 μm and a length of 1.472 μm. The reason for the formation of such a big structure is the tendency of the nanoparticles to aggregate in ethanol before irradiation, which causes fusion of the nanoparticles.
在本工作中，我们通过在乙醇中激光烧蚀纯银板来制备银纳米粒子，然后用 532nm 的 Q 开关 Nd:YAG 脉冲激光对银纳米粒子进行辐照。辐照后样品的透射电子显微镜图像清楚地显示出在乙醇中形成了大结构，如微棒和微带。得到的微带的宽度约为 0.166μm，长度为 1.472μm。形成这种大结构的原因是纳米粒子在辐照前在乙醇中倾向于聚集，这导致纳米粒子的融合。
