Controlling the orientation of ellipsoidal nanoparticles using fractional vector beams

被引:0
|
作者
Zhang, Xiaohe [1 ,2 ,3 ]
Zhu, Liuhao [2 ]
Gong, Liping [4 ]
Gu, Bing [2 ]
机构
[1] Nanjing Univ Informat Sci & Technol, Sch Automat, Nanjing 210044, Peoples R China
[2] Southeast Univ, Sch Elect Sci & Engn, Nanjing 211189, Peoples R China
[3] Zhejiang Hengdian TOSPO IMP Co Ltd, Yiwu 322118, Peoples R China
[4] Shanghai Univ Engn Sci, Sch Math Phys & Stat, Shanghai 201620, Peoples R China
来源
OPTICS EXPRESS | 2024年 / 32卷 / 24期
基金
中国国家自然科学基金; 中国博士后科学基金;
关键词
ORBITAL ANGULAR-MOMENTUM; RAYLEIGH PARTICLES; FORCE; LIGHT; GENERATION; TWEEZERS; INTEGER;
D O I
10.1364/OE.538922
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In the field of nanotechnology, achieving precise manipulation of ellipsoidal nanoparticles presents a significant challenge because it requires controlling five degrees of freedom, including three spatial dimensions (position in 3D space) and two angular dimensions (polar and azimuthal angles). In this work, we investigate both the optical forces and trapping potentials on an ellipsoidal nanoparticle produced by tightly focused fractional vector beams (FVBs). Unlike the integer vector beams (IVBs), which manipulate only three spatial dimensions of ellipsoidal particles, FVB with an initial phase not only provides spatial position control but also enables precise manipulation of spatial orientation. Moreover, by adjusting the topological index and initial phase of the incident FVBs, arbitrary orientations in the 3D space of ellipsoidal nanoparticles can be achieved. Our results may find interesting applications in microfluidics, biomedical engineering, and nanotechnology.
引用
收藏
页码:43224 / 43238
页数:15
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