Abstract

The performance of bi-periodic arrays of gold nano-particles for molecular sensing applications is studied using the Fourier Modal Method (FMM). We show that the electromagnetic coupling between the particles can be optimized to increase their sensitivity to a weak change of the shallow dielectric environment. Especially, arrays whose elementary cell consists of a dimer of two closely packed particles are found to be at least three times more sensitive than single particle arrays.

© 2004 Optical Society of America

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[CrossRef]

J. Chem. Phys. B

C. L. Haynes, A. D. McFarland, L. Zhao, R. P. Van Duyne, L. Gunnarsson, J. Prikulis, B. Kasemo, and M. Käll, �??Nanoparticle Optics: the importance of radiative dipole coupling in two-dimensional nanoparticle arrays,�?? J. Chem. Phys. B 107, 7337 (2003).

J. Opt. Soc. Am. A

J. Opt. Soc. Am. B

Nano Lett.

A. D. McFarland and R. P. Van Duyne, �??Single silver nanoparticles as real-time optical sensors with zeptomole sensitivity,�?? Nano Lett. 3, 1057 (2003).
[CrossRef]

J. J. Mock, D. R. Smith, and S. Schultz, �??Local refractive index dependence of plasmon resonance spectra from individual nanoparticles,�?? Nano Lett. 3, 485 (2003).
[CrossRef]

G. Raschke, S. Kowarik, T. Franzl, C. Sonnichsen, T. A. Klar, and J. Feldmann, �??Biomolecular recognition based on single gold nanoparticle light scattering,�?? Nano Lett. 3, 935 (2003).
[CrossRef]

D. A. Genov, A. K. Sarychev, V. M. Shalaev, and A.Wei, �??Resonant field enhancements from metal nanoparticle arrays,�?? Nano Lett. 4, 153 (2003).
[CrossRef]

Nature

W. L. Barnes, A. Dereux, and T. W. Ebbesen, �??Surface plasmon subwavelength optics,�?? Nature (London) 423, 824 (2003).
[CrossRef]

Opt. Commun.

W. Rechberger, A. Hohenau, A. Leitner, J. R. Krenn, B. Lamprecht, and F. R. Aussenegg, �??Optical properties of two interacting gold nanoparticles,�?? Opt. Commun. 220, 137 (2003).
[CrossRef]

Opt. Express

Opt. Lett.

Phys. Rev. B

N. Felidj, J. Aubard, G. Lévi, J. R. Krenn, M. Salermo, G. Schider, B. Lamprecht, A. Leitner, and F. R. Aussenegg, �??Controlling the optical response of regular arrays of gold particles for surface-enhanced Raman scattering,�?? Phys. Rev. B 65, 075419 (2002).
[CrossRef]

Phys. Rev. E

H. Xu, J. Aizpurua, M. K¨all, and P. Apell, �??Electromagnetic contributions to single-molecule sensitivity in surface-enhanced Raman scattering,�?? Phys. Rev. E 62, 4318 (2000).
[CrossRef]

Phys. Rev. Lett.

K. Li, M. I. Stockman, and D. J. Bergman, �??Self-similar chain of metal nanospheres as an efficient Nanolens,�?? Phys. Rev. Lett. 91, 227402 (2003).
[CrossRef]

B. Lamprecht, G. Schider, R. T. Lechner, H. Ditbacher, J. R. Krenn, A. Leitner, and F. R. Aussenegg, �??Metal Nanoparticle Gratings: Influence of Dipolar Particle Interaction on the Plasmon Resonance,�?? Phys. Rev. Lett. 84, 4721 (2000).
[CrossRef]

K. J. Klein Koerkamp, S. Enoch, F. B. Segerink, N. F. Van Hulst, and L. Kuipers, �??Strong Influence of Hole Shape on Extraordinary Transmission through Periodic Arrays of Subwavelength Holes,�?? Phys. Rev. Lett. 92, 183901 (2004).
[CrossRef]

H. Xu and M. Käll, �??Surface-Plasmon-Enhanced Optical Forces in silver nanoaggregates,�?? Phys. Rev. Lett. 89, 246802 (2002).
[CrossRef]

Other

M. Nevière and E. Popov, Light Propagation in Periodic Media: Differential Theory and Design (Marcel Dekker, New York, 2003).

E. D. Palik, Handbook of optical constants of solids (Academic Press, New York, 1985).

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