OSA's Digital Library

Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 18 — Sep. 1, 2008
  • pp: 13560–13568

Optical forces on metallic nanoparticles induced by a photonic nanojet

Xudong Cui, Daniel Erni, and Christian Hafner  »View Author Affiliations


Optics Express, Vol. 16, Issue 18, pp. 13560-13568 (2008)
http://dx.doi.org/10.1364/OE.16.013560


View Full Text Article

Enhanced HTML    Acrobat PDF (391 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We investigate the optical forces acting on a metallic nanoparticle when the nanoparticle is introduced within a photonic nanojet (PNJ). Optical forces at resonance and off-resonance conditions of the microcylinder or nanoparticle are investigated. Under proper polarization conditions, the whispering gallery mode can be excited in the microcylinder, even at off resonance provided that scattering from the nanoparticle is strong enough. The optical forces are enhanced at resonance either of the single microcylinder or of the nanoparticle with respect to the forces under off-resonant illuminations. We found that the optical forces acting on the nanoparticle depend strongly on the dielectric permittivity of the nanoparticle, as well as on the intensity and the beam width of the PNJ. Hence, metallic sub-wavelength nanoparticle can be efficiently trapped by PNJs. Furthermore, the PNJ’s attractive force can be simply changed to a repulsive force by varying the polarization of the incident beam. The changed sign of the force is related to the particle’s polarizability and the excitation of localized surface plasmons in the nanoparticle.

© 2008 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(290.0290) Scattering : Scattering

ToC Category:
Optical Trapping and Manipulation

History
Original Manuscript: June 30, 2008
Revised Manuscript: August 14, 2008
Manuscript Accepted: August 15, 2008
Published: August 19, 2008

Citation
Xudong Cui, Daniel Erni, and Christian Hafner, "Optical forces on metallic nanoparticles induced by a photonic nanojet," Opt. Express 16, 13560-13568 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-18-13560


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. Z. Chen, A. Taflove, and V. Backman, "Photonic nanojet enhancement of backscattering of light by nanoparticles: a potential novel visible-light ultramicroscopy technique, " Opt. Express 12, 1214-1220 (2004). [CrossRef] [PubMed]
  2. V. Itagi and W. A. Challener, "Optics of photonic nanojets," J. Opt. Soc. Am. A 22, 2847-2858 (2005). [CrossRef]
  3. A. Heifetz, J. J. Simpson, S. C. Kong, A. Taflove, and V. Backman, "Subdiffraction optical resolution of a gold nanosphere located within the nanojet of a Mie-resonant dielectric microsphere," Opt. Express 15, 17334-17342 (2007). [CrossRef] [PubMed]
  4. X. Li, Z. Chen, A. Taflove, and V. Backman, "Optical analysis of nanoparticles via enhanced backscattering facilitated by 3-D photonic nanojets," Opt. Express 13, 526-533 (2005). [CrossRef] [PubMed]
  5. A. Heifetz, K. Huang, A. V. Sahakian, X. Li, A. Taflove, and V. Backman, "Experimental confirmation of backscattering enhancement induced by a photonic jet," Appl. Phys. Lett. 89, 221118 (2006). [CrossRef]
  6. V. Sandoghdar, E. Klotzsch, V. Jacobsen, A. Renn, U. Hakanson, M. Agio, I. Gerhardt, J. Seelig, and G. Wrigge, "Optical detection of very small nonfluorescent nanoparticles," CHIMIA 60, 761-764 (2006). [CrossRef]
  7. Ch. Hafner, Post-Modern Electromagnetics (Wiley, Chichester, 1999).
  8. http://max-1.ethz.ch.
  9. P. C. Chaumet and M. Nieto-Vesperinas, "Coupled dipole method determination of the electromagnetic force on a particle over a flat dielectric substrate," Phys. Rev. B. 61, 14119-14127 (2000). [CrossRef]
  10. C. Rockstuhl and H. P. Herzig, "Wavelength dependent optical force on elliptical silver cylinders at plasmon resonance," Opt. Lett. 29, 2181-2183 (2004). [CrossRef] [PubMed]
  11. V. Wong and M. A. Ratner, "Size dependence of gradient and nongradient optical forces in silver nanoparticles," J. Opt. Soc. Am. B 24, 106-112 (2007). [CrossRef]
  12. A. S. Zelenina, R. Quidant, and M. Nieto-Vesperinas, "Enhanced optical forces between coupled resonant metal nanoparticles," Opt. Lett. 32, 1156-1158 (2007). [CrossRef] [PubMed]
  13. P. Johnson and R. Christy, "Optical constants of noble metals," Phys. Rev. B 6, 4730-4739 (1972). [CrossRef]
  14. J. R. Arias-Gonzalez and M. Nieto-Vesperinas, "Optical force on small particles: attractive and repulsive nature and plasmon-resonance conditions," J. Opt. Soc. Am. A 20, 1201-1209 (2003). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

Supplementary Material


» Media 1: AVI (1356 KB)     
» Media 2: AVI (1587 KB)     

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited