.png){kind=icon}
返回
Optical pulling force
.png){kind=icon}
PRE
AI
DOI：10.1038/NPHOTON.2011.153.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
A photon carries (h) over bark of momentum, so it may be anticipated that light will 'push' on any object standing in its path by means of the scattering force(1-3). In the absence of an intensity gradient, using a light beam to pull a particle backwards is counter-intuitive. Here, we show that it is possible to realize a backward scattering force that pulls a particle all the way towards the source without an equilibrium point. The underlining physics is the maximization of forward scattering via interference of the radiation multipoles. We show explicitly that the necessary condition to realize a negative (pulling) optical force is the simultaneous excitation of multipoles in the particle, and if the projection of the total photon momentum along the propagation direction is small, an attractive optical force is possible. This possibility adds 'pulling' as an additional degree of freedom to optical micromanipulation.
Keyword:
SCATTERING
MICROMANIPULATION
DIFFRACTION
BEAM
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
32.9
论文数:
4.3K
被引数:
6.1W
机构
引用论文
.png){kind=icon}
分享收藏分享收藏High prevalence of nontoxigenic Clostridium difficile isolated from hospitalized and non-hospitalized individuals in rural Ghana加纳农村地区从住院和非住院个体中分离出的非产毒艰难梭菌的高患病率
PREAI
分享收藏分享收藏
查看更多内容