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Self-Similar Chain of Metal Nanospheres as an Efficient Nanolens
Abstract
As an efficient nanolens, we propose a self-similar linear chain of several metal nanospheres with progressively decreasing sizes and separations. To describe such systems, we develop the multipole spectral expansion method. Optically excited, such a nanolens develops the nanofocus ("hottest spot") in the gap between the smallest nanospheres, where the local fields are enhanced by orders of magnitude due to the multiplicative, cascade effect of its geometry and high Q factor of the surface plasmon resonance. The spectral maximum of the enhancement is in the near-ultraviolet region, shifting toward the red region as the separation between the spheres decreases. The proposed system can be used for nanooptical detection, Raman characterization, nonlinear spectroscopy, nanomanipulation of single molecules or nanoparticles, and other applications.
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Cites
Optical Constants of the Noble Metals
Johnson, P. B., & Christy, R. W. (1972) · Physical Review B · doi:10.1103/physrevb.6.4370 · Cited by 20,094
Cited by
Mühlschlegel, P., Eisler, H.-J., Martin, O. J. F., Hecht, B., & Pohl, D. W. (2005) · Science · doi:10.1126/science.1111886 · Cited by 2,115
Optical properties of coupled metallic nanorods for field-enhanced spectroscopy
Aizpurua, J., Bryant, G. W., Richter, L. J., García de Abajo, F. J., Kelley, B. K., & Mallouk, T. (2005) · Physical Review B · doi:10.1103/physrevb.71.235420 · Cited by 601
Nonlocal Effects in the Plasmons of Strongly Interacting Nanoparticles, Dimers, and Waveguides
García de Abajo, F. J. (2008) · The Journal of Physical Chemistry C · doi:10.1021/jp807345h · Cited by 573
Close Encounters between Two Nanoshells
Lassiter, J. B., Aizpurua, J., Hernandez, L. I., Brandl, D. W., Romero, I., Lal, S., Hafner, J. H., Nordlander, P., & Halas, N. J. (2008) · Nano Letters · doi:10.1021/nl080271o · Cited by 486
Multipole light scattering by nonspherical nanoparticles in the discrete dipole approximation
Evlyukhin, A. B., Reinhardt, C., & Chichkov, B. N. (2011) · Physical Review B · doi:10.1103/physrevb.84.235429 · Cited by 361
Metadata
- Authors
- Li, K., Stockman, M. I., & Bergman, D. J.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2003-11-26
- Volume
- 91
- Issue
- 22
- Pages
- 227402-227402
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2025820080
- Cited by
- 827
- References
- 1
- FWCI
- 21.78
- Type
- journal article
- Language
- en
- Open access
- closed
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- Li, K., Stockman, M. I., & Bergman, D. J. (2003). Self-Similar Chain of Metal Nanospheres as an Efficient Nanolens. Physical Review Letters. https://doi.org/10.1103/physrevlett.91.227402
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