光纤探针型近场光镊光阱力特性研究

刘炳辉; 杨立军; 王扬; 袁巨龙

光子学报, 2011, 40 (3): 363, 网络出版: 2011-03-28

光纤探针型近场光镊光阱力特性研究

Nanomanipulation of Nearfield Optical Tweezers Using a Fiber Probe

论文大纲

刘炳辉 ^1,2,*杨立军 ²王扬 ²袁巨龙 ¹

作者单位

¹ 浙江工业大学特种装备制造与先进加工技术教育部重点实验室，杭州 310032

² 哈尔滨工业大学机电工程学院，哈尔滨 150001

近场光镊光纤探针光阱力三维时域有限差分法纳米操作 Nearfield optical tweezers Fiber probe Trapping force 3D FDTD Nanomanipulation

摘要

基于动量守恒原理，结合麦克斯韦应力张量和三维时域有限差分方法,建立了近场空间内激光光镊对纳米微粒的光阱力计算模型.分析了光纤探针型近场光镊的近场分布以及操作纳米微粒时各轴向光阱力的分布情况，并探讨了光纤探针尖端的捕获尺寸、捕获位置和操作稳定性.结果表明:微粒应处于光纤探针针尖的近场空间内才可实现稳定可靠的纳米操作，不同尺寸的微粒具有不同的捕获效果，且随初始位置的不同微粒的捕获位置亦不同.计算结果为激光近场光镊纳米操作装置的设计和制造提供了理论基础.

Abstract

In order to reveal the nearfield distribution of electromagnetic field and the axial distribution of trapping force acting on nanoparticles located in nearfield optical tweezers,and to explore the trapping size,trapping location and trapping stability,the direct calculations of Maxwell stress tensor were solved numerically by using threedimensional finite difference time domain method without the limitation of dipole approximation.Calculations show that the particle with radius larger than the aperture is pushed away from the tapered metalcoated fiber probe,while it tends to be trapped in larger effective region as the radius becoming smaller.The nearfield optical probe can trap and manipulate a nanoparticle with tens of nanometres diameter to different positions with different distance from the probe tip.Results of the calculations are found to be helpful for the design and manifacturing of nearfield optical tweezers system.验室开放基金项目(No.2009EP012)和机器人技术与系统国家重点实验室开放研究项目(No.SKLRS20102D10)资助

参考文献

[1] . Combining optical tweezers and scanning probe microscopy to study DNAprotein interactions[J]. Microscopy Research and Technique, 2007, 70(1): 26.

[2] . Plasmonic metasurfaces for waveguiding and field enhancement[J]. Laser & Photonics Reviews, 2009, 3(6): 575.

[3] . Manipulation of yeast cells by a tapered fiber probe and measurement of optical trapping force[J]. Journal of the Korean Physical Society, 2005, 47(1): S9.

[4] ZHANG G P,ZHU Z R,LI Y P,et al.Numerical analysis of nearfield optical trapping using tapered fiber probe［C］.SPIE,2000,4082:321328.

[5] 刘秀梅,王佳.用时阈有限差分方法研究光纤微探针近场分布特性［J］.光学学报,2001,21(10):12341238.

LIU Xiumei,WANG Jia.Characterization of nearfield distribution of optical fiber probe by FDTD［J］.Acta Photonica Sinica,2001,21(10):12341238.

[6] . Simulation of near field optical manipulator by boundary element methodapertureprobe coated with metal[J]. Electronics and Communications in Japan (Part Ⅱ:Electronics), 2000, 83(9): 32.

[7] . Nearfield photonic forces[J]. Philosophical Transactions of the Royal Society A, 2004, 362(2): 719.

[8] . A single beam nearfield laser trap for optical stretching,folding and rotation of erythrocytes[J]. Optics Express, 2007, 15(3): 1369.

[9] . Nearfield optical micromanipulation with cavity enhanced evanescent waves[J]. Applied Physics Letters, 2006, 88(22): 1116.

[10] . Optical trapping[J]. Review of Scientific Intruments, 2004, 75(9): 2787.

[11] 葛德彪,闫玉波.电磁波时域有限差分方法［M］.2版.西安:西安电子科技大学出版社,2002:232.

[12] TAFLOVE A.Computational electrodynamics:the finite difference time domain method［M］.2nd ed.Norwood:Artech House Press,2000:156.

[13] TAFLOVE A,HAGNESS S C. Computational electrodynamics:the finitedifference timedomain method［M］. 3rd ed. Norwood:Artech House Press,2005:161.

[14] . Optical trapping force combining an optical fiber probe and an AFM metallic probe[J]. Optics Express, 2011, 19(4): 3703.

[15] . Tapered fiber optical tweezers for microscopic particle trapping:fabrication and application[J]. Optics Express, 2006, 14(25): 12510.

刘炳辉, 杨立军, 王扬, 袁巨龙. 光纤探针型近场光镊光阱力特性研究[J]. 光子学报, 2011, 40(3): 363. LIU Binghui, YANG Lijun, WANG Yang, YUAN Julong. Nanomanipulation of Nearfield Optical Tweezers Using a Fiber Probe[J]. ACTA PHOTONICA SINICA, 2011, 40(3): 363.

光纤探针型近场光镊光阱力特性研究

关于本站 Cookie 的使用提示

全站搜索

光纤探针型近场光镊光阱力特性研究

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索