DOI: 10.17586/2226-1494-2015-15-1-1-5


OPTICAL PULLING FORCES IN “NANOPARTICLES DIMER IN THE STRUCTURED FIELD” SYSTEM

S. V. Sukhov, A. S. Shalin


Read the full article 
Article in Russian

For citation: Sukhov S.V., Shalin A.S. Optical pulling forces in “Nanoparticles dimer in the structured field” system. Scientific and Technical Journal of Information Technologies, Mechanics and Optics, 2015, vol. 15, no. 1, pp. 1–5 (in Russian)

Abstract

The subject area of this research is optical pulling forces as one of the manifestations of light mechanical action on material objects. In particular, we investigated optical forces acting on a dimer composed of nanoparticles with a small radius as compared to wavelength. The calculation of Lorentz optical forces was carried out by solving self-consistent system of equations, which made it possible to calculate electromagnetic fields in every point of the structure. We worked out analytic formula, representing the dependence of optical force on the parameters of dimer system and structured radiation made up of two crossing plane waves. For the first time we showed that dimer consisting of two equal dipolar particles can experience an optical pulling force (“negative radiation pressure”) in the field of two crossing plane waves. It is shown that the increase of photons momentum (the projection of photons momentum on the direction of structured light propagation) after scattering is responsible for this negative radiation pressure. The corresponding scattering diagram showed the increase of forward scattering, that is the conformation of the considered mechanism of pulling forces origination. Our findings would be very useful for increasing capabilities of optical manipulation of nano- and micro-particles. 


Keywords: optical manipulation, optical forces, pulling forces, nanoparticle, dimer

Acknowledgements. This research was supported by the Russian Foundation for Basic Research within the project No.13- 02-00623. The calculation and investigation of dimers scattering diagram was supported by the Russian Science Foundation Grant No. 14-12-01227.

References

1. Sukhov S., Dogariu A. Negative nonconservative forces: optical 'tractor beams' for arbitrary objects. Physical Review Letters, 2011, vol. 107, no. 20, art. 203602. doi: 10.1103/PhysRevLett.107.203602
2. Jackson J.D. Classical Electrodynamics. NY-London, John Wiley & Sons, 1962, 656 p.
3. Nelepets A.V., Tarlykov V.A. Transportirovka i deformatsiya dielektricheskikh chastits gradientnymi silami svetovogo davleniya [Dielectric particles trapping and deformation by the gradient forces of the light pressure]. Scientific and Technical Journal of Information Technologies, Mechanics and Optics, 2008, no. 58, pp. 59–65.
4. Shalin A.S., Sukhov S.V. Optical forces in plasmonic nanoantennas. Quantum Electronics, 2012, vol. 42, no. 4, pp. 355–360. doi: 10.1070/QE2012v042n04ABEH014740
5. Shalin A.S., Sukhov S.V. Plasmonic nanostructures as accelerators for nanoparticles: optical nanocannon. Plasmonics, 2013, vol. 8, no. 2, pp. 625–629. doi: 10.1007/s11468-012-9447-0
6. Dogariu A., Sukhov S., Saenz J. Optically induced 'negative forces'. Nature Photonics, 2013, vol. 7, no. 1, pp. 24–27. doi: 10.1038/nphoton.2012.315
7. Chen J., Ng J., Lin Z., Chan C.T. Optical pulling force. Nature Photonics, 2011, vol. 5, no. 9, pp. 531–534. doi: 10.1038/nphoton.2011.153
8. Novitsky A., Qiu C.-W., Wang H. Single gradientless light beam drags particles as tractor beams. Physical Review Letters, 2011, vol. 107, no. 20, art. 203601. doi: 10.1103/PhysRevLett.107.203601
9. Novitsky A., Qiu C.-W., Lavrinenko A. Material-independent and size-independent tractor beams for dipole objects. Physical Review Letters, 2012, vol. 109, no. 2, art. 023902. doi: 10.1103/PhysRevLett.109.023902
10. Brzobohatý O., Karásek V., Šiler M., Chvátal L., Čižmár T., Zemánek P. Experimental demonstration of optical transport, sorting and self-arrangement using a 'tractor beam'. Nature Photonics, 2013, vol. 7, no. 2, pp. 123–127. doi: 10.1038/nphoton.2012.332
11. Depasse F., Vigoureux J.-M. Optical binding force between two Rayleigh particles. Journal of Physics D: Applied Physics, 1994, vol. 27, no. 5, pp. 914–919. doi: 10.1088/0022-3727/27/5/006
12. Gadomsky O.N., Sukhov S.V., Voronov Yu.Yu. Near-field effect in two-atom system. European Physical Journal D, 2000, vol. 11, no. 2, pp. 185–190.
13. Born M., Wolf E. Principles of Optics. NY, Pergamon, 1959.
14. Tervo J., Vahimaa P., Turunen J. On propagation-invariant and self-imaging intensity distributions of electromagnetic fields. Journal of Modern Optics, 2002, vol. 49, no. 9, pp. 1537–1543. doi: 10.1080/09500340110107504
15. Ashkin A., Gordon J.P. Stability of radiation-pressure particle traps: an optical Earnshaw theorem. Optics Letters, 1983, vol. 8, no. 10, pp. 511–513.
16. Chaumet P.C., Nieto-Vesperinas M. Time-averaged total force on a dipolar sphere in an electromagnetic field. Optics Letters, 2000, vol. 25, no. 15, pp. 1065–1067.
17. Dogariu A., Sukhov S. On the concept of 'tractor beams'. Optics Letters, 2010, vol. 35, no. 22, pp. 3847– 3849. doi: 10.1364/OL.35.003847
18. Tsai C.-Y., Lin J.-W., Wu C.-Y., Lin P.-T., Lu T.-W., Lee P.-T. Plasmonic coupling in gold nanoring dimers: observation of coupled bonding mode. Nano Letters, 2012, vol. 12, no. 3, pp. 1648−1654. doi: 10.1021/nl300012m
19. Mertens J., Eiden A.L., Sigle D.O., Huang F., Lombardo A., Sun Z., Sundaram R.S., Colli A., Tserkezis C., Aizpurua J., Milana S., Ferrari A.C., Baumberg J.J. Controlling subnanometer gaps in plasmonic dimers using graphene. Nano Letters, 2013, vol. 13, no. 11, pp. 5033−5038. doi: 10.1021/nl4018463
20. Theiss J., Aykol M., Pavaskar P., Cronin S.B. Plasmonic mode mixing in nanoparticle dimers with nmseparations via substrate-mediated coupling. Nano Research, 2014, vol. 7, no. 9, pp. 1344–1354. doi: 10.1007/s12274-014-0499-7 

Copyright 2001-2017 ©
Scientific and Technical Journal
of Information Technologies, Mechanics and Optics.
All rights reserved.

Яндекс.Метрика