Abstract

Based on numerical studies of apertured metallic nanocavity structures, we describe a new intra-particle plasmonic interaction pathway that couples the plasmon resonance modes of the aperture edge and the cavity. In contrast to the inter-particle coupling schemes that require precisely arrayed nanoparticles, this intra-particle coupling scheme achieves the tunability in plasmonic resonance wavelength using a single standalone nanostructure. In addition, when the aperture edge is made sharp, it functions dually as a tip that amplifies its near-field producing the local filed enhancement effect. We investigate the details of the coupling mechanism and identify the dominant role of the tip mode in determining the coupling efficiency numerically. The numerical model results in good agreement with recent experimental results. This intra-particle coupling mechanism will help the monolithic integration of plasmonic functionalities and its application for the nanoscale spectroscopy of biological structures in vivo.

© 2005 Optical Society of America

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History
Original Manuscript: August 10, 2005
Revised Manuscript: September 9, 2005
Published: October 17, 2005

References

1. L. Zhao, K. L. Kelly, and G. C. Schatz, �??The extinction spectra of silver nanoparticle arrays: influence of array structure on plasmon resonance wavelength and width,�?? J. Phys. Chem. B 107, 7343-7350 (2003). [CrossRef]
2. N. Calander and M. Willander, �??Theory of surface-plasmon resonance optical-field enhancement at prolate spheroids,�?? J. Appl. Phys. 92, 4878-4884 (2002). [CrossRef]
3. E. Prodan, C. Radloff, N. J. Halas, and P. Nordlander, �??A hybridization model for the plasmon response of complex nanostructures,�?? Science 302, 419-422 (2003). [CrossRef]
4. J. Aizpurua, P. Hanarp, D. S. Sutherland, M. Kall, G. W. Bryant, and F. J. Garcia de Abajo, �??Optical properties of gold nanorings,�?? Phys. Rev. Lett. 90, 057401 (2003). [CrossRef]
5. J. S. Shumaker-Parry, H. Rochholz, and M. Kreiter, �??Fabrication of crescent-shaped optical antenna,�?? Adv. Mat. 17, 2131-2134 (2005). [CrossRef]
6. Y. Lu, G. L. Liu, Jaeyoun Kim, Y. Mejia, and L. P. Lee, �??Nanophotonic crescent moon structures with sharp edge for ultrasensitive biomolecular detection by local electromagnetic field enhancement effect,�?? Nano Lett. 5, 119-124 (2005). [CrossRef]
7. C. C. Charnay, A. Lee, S.-Q. Man, C. E. Moran, C. Radloff, R. K. Bradley, and N. J. Halas, �??Reduced symmetry metallodielectric nanoparticles: chemical synthesis and plasmonic properties,�?? J. Phys. Chem. B 107, 7327-7333 (2003). [CrossRef]
8. E. Hao, S. Li, R. C. Bailey, S. Zou, G. C. Schatz, and J. T. Hupp, �??Optical properties of metal nanoshells,�?? J. Phys. Chem. B 108, 1224-1229 (2004).
9. S. Coyle, M. C. Netti, J. J. Baumberg, M. A.Ghanem, P. R. Birkin, P. N. Bartlett, and D. M. Whittaker, �??Confined plasmons in metallic nanocavities,�?? Phys. Rev. Lett. 87, 176801 (2001). [CrossRef]
10. C. I. Valencia and R. A. Depine, �??Resonant scattering of light by an open cylindrical cavity ruled on a highly conducting flat surface,�?? Opt. Comm. 159, 254-265 (1999); D. C. Skigin and R. A. Depine, �??Surface shape resonances and surface plasmon polariton excitations in bottle-shaped metallic gratings,�?? Phys. Rev. E 63, 046608 (2001).
11. P. B. Johnson and R. W. Christy, �??Optical constants of the noble metals,�?? Phys. Rev. B 6, 4370-4379 (1972). [CrossRef]
12. M. Kociak, O. Stephan, L. Henrad, V. Charbois, A. Rothschild, R. Tenne, and C. Colliex, �??Experimental evidence of surface-plasmon coupling in anisotropic hollow nanoparticles,�?? Phys. Rev. Lett. 87, 075501 (2001). [CrossRef]
13. D. P. Fromm, A. Sundaramurthy, P. J. Schuck, G. Kino, and W. E. Moerner, �??Gap-dependent optical coupling of single "bowtie" nanoantennas resonant in the visible,�?? Nano Lett. 4, 957-961 (2004); P.J. Schuck, D.P. Fromm, A. Sundaramurthy, G. Kino, and W.E. Moerner, �??Improving the mismatch between light and nanoscale objects with gold bowtie nanoantennas,�?? Phys. Rev. Lett. 94, 017402 (2005). [CrossRef]
14. R. Ruppin, in Electromagnetic Surface Modes, edited by A. D. Boardman (Wiley, Chichester, 1982), Chap. 9, p.345.
15. R.D. Grober, R.J. Schoelkopf, and D.E. Prober, �??Optical antenna: Towards a unity efficiency near-field optical probe,�?? Appl. Phys. Lett. 70, 1354-1356 (1997). [CrossRef]
16. J. P. Kottmann and O. J. F. Martin, �??Retardation-induced plasmon resonances in coupled nanoparticles,�?? Opt. Lett. 26, 1096-1098 (2001).
17. T. Lopez-Rios, D. Mendoza, F. J. Garcia-Vidal, J. Sanchez-Dehesa, and B. Pannetier, �??Surface Shape Resonances in Lamellar Metallic Gratings,�?? Phys. Rev. Lett. 81, 665-668 (1998). [CrossRef]

Author Affiliations

Jaeyoun Kim, Gang Liu, Yu Lu, Luke Lee

University of California, Berkeley

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