In this paper a model of the trapping force on nanowires is built by three dimensional finite-difference time-domain (FDTD) and Maxwell stress tensor methods, and the tightly focused laser beam is expressed by spherical vector wave functions (VSWFs). The trapping capacities on nanoscale-diameter nanowires are discussed in terms of a strongly focused linearly polarized beam and radially polarized beam. Simulation results demonstrate that the radially polarized beam has higher trapping efficiency on nanowires with higher refractive indices than linearly polarized beam.

© 2011 OSA

1. D. G. Grier, “A revolution in optical manipulation,” Nature424(6950), 810–816 (2003). [CrossRef] [PubMed]
2. A. Ashkin, “History of optical trapping and manipulation of small-neutral particle, atoms, and molecules,” IEEE J. Sel. Top. Quantum Electron.6(6), 841–856 (2000). [CrossRef]
3. A. Ashkin, J. M. Dziedzic, J. E. Bjorkholm, and S. Chu, “Observation of a single-beam gradient force optical trap for dielectric particles,” Opt. Lett.11(5), 288–290 (1986). [CrossRef] [PubMed]
4. P. J. Pauzauskie, A. Radenovic, E. Trepagnier, H. Shroff, P. D. Yang, and J. Liphardt, “Optical trapping and integration of semiconductor nanowire assemblies in water,” Nat. Mater.5(2), 97–101 (2006). [CrossRef] [PubMed]
5. T. Yu, F. C. Cheong, and C. H. Sow, “The manipulation and assembly of CuO nanorods with line optical tweezers,” Nanotechnology15(12), 1732–1736 (2004). [CrossRef]
6. R. Agarwal, K. Ladavac, Y. Roichman, G. H. Yu, C. M. Lieber, and D. G. Grier, “Manipulation and assembly of nanowires with holographic optical traps,” Opt. Express13(22), 8906–8912 (2005). [CrossRef] [PubMed]
7. P. B. Bareil and Y. L. Sheng, “Angular and position stability of a nanorod trapped in an optical tweezers,” Opt. Express18(25), 26388–26398 (2010). [CrossRef] [PubMed]
8. F. Borghese, P. Denti, R. Saija, M. A. Iatì, and O. M. Maragò, “Radiation torque and force on optically trapped linear nanostructures,” Phys. Rev. Lett.100(16), 163903 (2008). [CrossRef] [PubMed]
9. D. C. Benito, S. H. Simpson, and S. Hanna, “FDTD simulations of forces on particles during holographic assembly,” Opt. Express16(5), 2942–2957 (2008). [CrossRef] [PubMed]
10. J. P. Barton and D. R. Alexander, “Fifth-order corrected electromagnetic field components for a fundamental Gaussian beam,” J. Appl. Phys.66(7), 2800–2802 (1989). [CrossRef]
11. G. Gouesbet, J. A. Lock, and G. Gréhan, “Partial-wave representations of laser beams for use in light-scattering calculations,” Appl. Opt.34(12), 2133–2143 (1995). [CrossRef] [PubMed]
12. S. H. Simpson and S. Hanna, “Numerical calculation of interparticle forces arising in association with holographic assembly,” J. Opt. Soc. Am. A23(6), 1419–1431 (2006). [CrossRef] [PubMed]
13. G. J. Hu, J. Li, Q. Long, T. Tao, G. X. Zhang, and X. P. Wu, “FDTD numerical simulation of the trapping force of microsphere in single optical tweezers,” Acta Phys. Sin.60, 30301 (2011).
14. N. Passilly, R. de Saint Denis, K. Aït-Ameur, F. Treussart, R. Hierle, and J.-F. Roch, “Simple interferometric technique for generation of a radially polarized light beam,” J. Opt. Soc. Am. A22(5), 984–991 (2005). [CrossRef] [PubMed]
15. T. A. Nieminen, N. R. Heckenberg, and H. Rubinsztein-Dunlop, “Forces in optical tweezers with radially and azimuthally polarized trapping beams,” Opt. Lett.33(2), 122–124 (2008). [CrossRef] [PubMed]

Other

• D. G. Grier, “A revolution in optical manipulation,” Nature424(6950), 810–816 (2003). [CrossRef] [PubMed]
• A. Ashkin, “History of optical trapping and manipulation of small-neutral particle, atoms, and molecules,” IEEE J. Sel. Top. Quantum Electron.6(6), 841–856 (2000). [CrossRef]
• A. Ashkin, J. M. Dziedzic, J. E. Bjorkholm, and S. Chu, “Observation of a single-beam gradient force optical trap for dielectric particles,” Opt. Lett.11(5), 288–290 (1986). [CrossRef] [PubMed]
• P. J. Pauzauskie, A. Radenovic, E. Trepagnier, H. Shroff, P. D. Yang, and J. Liphardt, “Optical trapping and integration of semiconductor nanowire assemblies in water,” Nat. Mater.5(2), 97–101 (2006). [CrossRef] [PubMed]
• T. Yu, F. C. Cheong, and C. H. Sow, “The manipulation and assembly of CuO nanorods with line optical tweezers,” Nanotechnology15(12), 1732–1736 (2004). [CrossRef]
• R. Agarwal, K. Ladavac, Y. Roichman, G. H. Yu, C. M. Lieber, and D. G. Grier, “Manipulation and assembly of nanowires with holographic optical traps,” Opt. Express13(22), 8906–8912 (2005). [CrossRef] [PubMed]
• P. B. Bareil and Y. L. Sheng, “Angular and position stability of a nanorod trapped in an optical tweezers,” Opt. Express18(25), 26388–26398 (2010). [CrossRef] [PubMed]
• F. Borghese, P. Denti, R. Saija, M. A. Iatì, and O. M. Maragò, “Radiation torque and force on optically trapped linear nanostructures,” Phys. Rev. Lett.100(16), 163903 (2008). [CrossRef] [PubMed]
• D. C. Benito, S. H. Simpson, and S. Hanna, “FDTD simulations of forces on particles during holographic assembly,” Opt. Express16(5), 2942–2957 (2008). [CrossRef] [PubMed]
• J. P. Barton and D. R. Alexander, “Fifth-order corrected electromagnetic field components for a fundamental Gaussian beam,” J. Appl. Phys.66(7), 2800–2802 (1989). [CrossRef]
• G. Gouesbet, J. A. Lock, and G. Gréhan, “Partial-wave representations of laser beams for use in light-scattering calculations,” Appl. Opt.34(12), 2133–2143 (1995). [CrossRef] [PubMed]
• S. H. Simpson and S. Hanna, “Numerical calculation of interparticle forces arising in association with holographic assembly,” J. Opt. Soc. Am. A23(6), 1419–1431 (2006). [CrossRef] [PubMed]
• G. J. Hu, J. Li, Q. Long, T. Tao, G. X. Zhang, and X. P. Wu, “FDTD numerical simulation of the trapping force of microsphere in single optical tweezers,” Acta Phys. Sin.60, 30301 (2011).
• N. Passilly, R. de Saint Denis, K. Aït-Ameur, F. Treussart, R. Hierle, and J.-F. Roch, “Simple interferometric technique for generation of a radially polarized light beam,” J. Opt. Soc. Am. A22(5), 984–991 (2005). [CrossRef] [PubMed]
• T. A. Nieminen, N. R. Heckenberg, and H. Rubinsztein-Dunlop, “Forces in optical tweezers with radially and azimuthally polarized trapping beams,” Opt. Lett.33(2), 122–124 (2008). [CrossRef] [PubMed]

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