使用两根光纤探针控制单根银纳米线的取向。

Controllable orientation of single silver nanowire using two fiber probes.

机构信息

State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275, China.

出版信息

Sci Rep. 2014 Feb 5;4:3989. doi: 10.1038/srep03989.

DOI:10.1038/srep03989

PMID:24496474

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3913928/

Abstract

We report a strategy for realizing precise orientation of single silver nanowire using two fiber probes. By launching a laser of 980 nm wavelength into the two fibers, single silver nanowire with a diameter of 600 nm and a length of 6.5 μm suspended in water was trapped and rotated by optical torque resulting from its interaction with optical fields outputted from the fiber probes. Angular orientation of the nanowire was controlled by varying the relative distance between the two fiber probes. The angular stiffness, which refers to the stability of orientation, was estimated to be on the order of 10(-19) J/rad(2)·mW. The experiments were interpreted by theoretical analysis.

摘要

我们提出了一种使用两根光纤探针实现单根银纳米线精确取向的策略。通过将波长为 980nm 的激光导入两根光纤，直径为 600nm、长度为 6.5μm 的单根银纳米线在水中被捕获并旋转，这是由于其与光纤探针输出的光场相互作用产生的光学扭矩所致。通过改变两根光纤探针之间的相对距离来控制纳米线的角度取向。角度刚度（orientation stability）的大小约为 10(-19)J/rad(2)·mW。实验结果通过理论分析得到了解释。