摘要
通过建立镀膜光纤探针仿真模型,模拟锥形镀膜光纤探针针尖处剖面状态,实现对纳米微粒的非接触操作,以空气为操作环境,分析光纤探针镀膜厚度和光纤探针出射孔径的逐渐变化,找出其对近场光强的影响.同时对光纤探针发射激光照射AFM探针的角度变化、光纤探针与AFM探针之间距离的改变以及两者对AFM探针尖端场增强的影响规律做出了定量分析,通过仿真实验分析,进一步发现最大场增强因子,为完成纳米级物体操纵实验提供了参考.
In order to discover the probe acting on intensity of the near- field,this paper adapted the coating optical fiber probe simulation model. Through the simulation of the tapered metal- coated optical fiber probe,the non- contact operation of nano particles in the air could be realized. Through the analysis of optical fiber probe coating thickness and the gradually change of optical fiber probe aperture,found out their influence on the near field intensity. This paper presented a quantitative analysis of the influence law of the field enhancement factor by the changing of the angle and distance between two probes. Simulated experiments showed the maximum factor of field enhancement factor,it could provide reference for the nano object manipulation experiment.
出处
《哈尔滨商业大学学报（自然科学版）》
CAS
2015年第3期295-299,共5页
Journal of Harbin University of Commerce：Natural Sciences Edition
基金
黑龙江省自然科学基金项目(E201243)
关键词
镀膜光纤探针
AFM探针
场增强因子
激光
近场光强
仿真模型
coated optical fiber probe
AFM
field enhancement factor
laser
near field intensity
simulation model
