Abstract

We study theoretically the light scattering from trimers of metal nanowires, with emphasis on the occurrence of multiple surface-plasmon resonances, showing that such resonances can be exploited to achieve twofold-enhanced fluorescence from a single molecule placed in the nanotrimer gaps, even if excitation and emission frequencies are separated. Pump enhancement stems from the local field enhancement coinciding with one of the resonances, whereas a strong enhancement of the radiative decay rate (and quantum yield) is revealed at a different resonance, leading to a large overall signal emission.

© 2008 Optical Society of America

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  1. U. Kreibig and M. Vollmer, Optical Properties of Metal Clusters (Springer, 1995).
  2. W. L. Barnes, A. Dereux, and T. W. Ebbesen, Nature 424, 824 (2003).
    [CrossRef] [PubMed]
  3. H. Xu, J. Aizpurua, M. Käll, and P. Apell, Phys. Rev. E 62, 4318 (2000).
    [CrossRef]
  4. J. P. Kottmann, O. J. F. Martin, D. R. Smith, and S. Schultz, Phys. Rev. B 64, 235402 (2001).
    [CrossRef]
  5. K. L. Kelly, E. Coronado, L. L. Zhao, and G. C. Schatz, J. Phys. Chem. B 107, 668 (2003).
    [CrossRef]
  6. J. Aizpurua, G. W. Bryant, L. J. Richter, F. J. García de Abajo, B. K. Kelley, and T. Mallouk, Phys. Rev. B 71, 235420 (2005).
    [CrossRef]
  7. P. Nordlander, C. Oubre, E. Prodan, K. Li, and M. I. Stockman, Nano Lett. 4, 899 (2004).
    [CrossRef]
  8. D. P. Fromm, A. Sundaramurthy, P. J. Schuck, G. Kino, and W. E. Moerner, Nano Lett. 4, 957 (2004).
    [CrossRef]
  9. P. J. Schuck, D. P. Fromm, A. Sundaramurthy, G. S. Kino, and W. E. Moerner, Phys. Rev. Lett. 94, 017402 (2005).
    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]
  11. K. L. Shuford, M. A. Ratner, and G. C. Schatz, J. Chem. Phys. 123, 114713 (2005).
    [CrossRef]
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    [CrossRef] [PubMed]
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    [CrossRef]
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    [CrossRef] [PubMed]
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    [CrossRef] [PubMed]
  19. O. Muskens, V. Giannini, J. A. Sánchez-Gil, and J. Gómez Rivas, Nano Lett. 7, 2871 (2007).
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  20. V. Giannini and J. A. Sánchez-Gil, J. Opt. Soc. Am. A 24, 2822 (2007).
    [CrossRef]
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    [CrossRef]
  22. H. Wang, D. W. Brandl, P. Nordlander, and N. J. Halas, Acc. Chem. Res. 40, 53 (2007).
    [CrossRef] [PubMed]
  23. R. R. Chance, A. Prock, and R. Silbey, Adv. Chem. Phys. 37, 1 (1978).
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  24. R. Carminati, J.-J. Greffet, C. Henkel, and J. M. Vigoureux, Opt. Commun. 261, 368 (2006).
    [CrossRef]
  25. P. Bharadwaj and L. Novotny, Opt. Express 15, 14266 (2007).
    [CrossRef] [PubMed]
  26. J. R. Lakowicz, Anal. Biochem. 337, 171 (2005).
    [CrossRef] [PubMed]

2007

V. Giannini, J. A. Sánchez-Gil, J. V. García-Ramos, and E. R. Méndez, Phys. Rev. B 75, 235447 (2007).
[CrossRef]

L. Novotny, Phys. Rev. Lett. 98, 266802 (2007).
[CrossRef] [PubMed]

O. Muskens, V. Giannini, J. A. Sánchez-Gil, and J. Gómez Rivas, Nano Lett. 7, 2871 (2007).
[CrossRef] [PubMed]

H. Wang, D. W. Brandl, P. Nordlander, and N. J. Halas, Acc. Chem. Res. 40, 53 (2007).
[CrossRef] [PubMed]

T. Søndergaard and S. I. Bozhevolnyi, Opt. Express 15, 4198 (2007).
[CrossRef] [PubMed]

L. Rogobete, F. Kaminski, M. Agio, and V. Sandoghdar, Opt. Lett. 32, 1623 (2007).
[CrossRef] [PubMed]

V. Giannini and J. A. Sánchez-Gil, J. Opt. Soc. Am. A 24, 2822 (2007).
[CrossRef]

P. Bharadwaj and L. Novotny, Opt. Express 15, 14266 (2007).
[CrossRef] [PubMed]

2006

R. Carminati, J.-J. Greffet, C. Henkel, and J. M. Vigoureux, Opt. Commun. 261, 368 (2006).
[CrossRef]

I. Romero, J. Aizpurua, G. W. Bryant, and F. J. García de Abajo, Opt. Express 14, 9988 (2006).
[CrossRef] [PubMed]

S. E. Sburlan, L. A. Blanco, and M. Nieto-Vesperinas, Phys. Rev. B 73, 035403 (2006).
[CrossRef]

2005

J. J. Greffet, Science 308, 1561 (2005).
[CrossRef] [PubMed]

J. Aizpurua, G. W. Bryant, L. J. Richter, F. J. García de Abajo, B. K. Kelley, and T. Mallouk, Phys. Rev. B 71, 235420 (2005).
[CrossRef]

P. J. Schuck, D. P. Fromm, A. Sundaramurthy, G. S. Kino, and W. E. Moerner, Phys. Rev. Lett. 94, 017402 (2005).
[CrossRef] [PubMed]

P. Mühlschlegel, H. J. Eisler, O. J. F. Martin, B. Hecht, and D. W. Pohl, Science 308, 1607 (2005).
[CrossRef] [PubMed]

K. L. Shuford, M. A. Ratner, and G. C. Schatz, J. Chem. Phys. 123, 114713 (2005).
[CrossRef]

J. R. Lakowicz, Anal. Biochem. 337, 171 (2005).
[CrossRef] [PubMed]

2004

P. Nordlander, C. Oubre, E. Prodan, K. Li, and M. I. Stockman, Nano Lett. 4, 899 (2004).
[CrossRef]

D. P. Fromm, A. Sundaramurthy, P. J. Schuck, G. Kino, and W. E. Moerner, Nano Lett. 4, 957 (2004).
[CrossRef]

2003

W. L. Barnes, A. Dereux, and T. W. Ebbesen, Nature 424, 824 (2003).
[CrossRef] [PubMed]

K. L. Kelly, E. Coronado, L. L. Zhao, and G. C. Schatz, J. Phys. Chem. B 107, 668 (2003).
[CrossRef]

2001

J. P. Kottmann, O. J. F. Martin, D. R. Smith, and S. Schultz, Phys. Rev. B 64, 235402 (2001).
[CrossRef]

2000

H. Xu, J. Aizpurua, M. Käll, and P. Apell, Phys. Rev. E 62, 4318 (2000).
[CrossRef]

1978

R. R. Chance, A. Prock, and R. Silbey, Adv. Chem. Phys. 37, 1 (1978).
[CrossRef]

1972

P. B. Johnson and R. W. Christy, Phys. Rev. B 6, 4370 (1972).
[CrossRef]

Agio, M.

Aizpurua, J.

I. Romero, J. Aizpurua, G. W. Bryant, and F. J. García de Abajo, Opt. Express 14, 9988 (2006).
[CrossRef] [PubMed]

J. Aizpurua, G. W. Bryant, L. J. Richter, F. J. García de Abajo, B. K. Kelley, and T. Mallouk, Phys. Rev. B 71, 235420 (2005).
[CrossRef]

H. Xu, J. Aizpurua, M. Käll, and P. Apell, Phys. Rev. E 62, 4318 (2000).
[CrossRef]

Apell, P.

H. Xu, J. Aizpurua, M. Käll, and P. Apell, Phys. Rev. E 62, 4318 (2000).
[CrossRef]

Barnes, W. L.

W. L. Barnes, A. Dereux, and T. W. Ebbesen, Nature 424, 824 (2003).
[CrossRef] [PubMed]

Bharadwaj, P.

Blanco, L. A.

S. E. Sburlan, L. A. Blanco, and M. Nieto-Vesperinas, Phys. Rev. B 73, 035403 (2006).
[CrossRef]

Bozhevolnyi, S. I.

Brandl, D. W.

H. Wang, D. W. Brandl, P. Nordlander, and N. J. Halas, Acc. Chem. Res. 40, 53 (2007).
[CrossRef] [PubMed]

Bryant, G. W.

I. Romero, J. Aizpurua, G. W. Bryant, and F. J. García de Abajo, Opt. Express 14, 9988 (2006).
[CrossRef] [PubMed]

J. Aizpurua, G. W. Bryant, L. J. Richter, F. J. García de Abajo, B. K. Kelley, and T. Mallouk, Phys. Rev. B 71, 235420 (2005).
[CrossRef]

Carminati, R.

R. Carminati, J.-J. Greffet, C. Henkel, and J. M. Vigoureux, Opt. Commun. 261, 368 (2006).
[CrossRef]

Chance, R. R.

R. R. Chance, A. Prock, and R. Silbey, Adv. Chem. Phys. 37, 1 (1978).
[CrossRef]

Christy, R. W.

P. B. Johnson and R. W. Christy, Phys. Rev. B 6, 4370 (1972).
[CrossRef]

Coronado, E.

K. L. Kelly, E. Coronado, L. L. Zhao, and G. C. Schatz, J. Phys. Chem. B 107, 668 (2003).
[CrossRef]

Dereux, A.

W. L. Barnes, A. Dereux, and T. W. Ebbesen, Nature 424, 824 (2003).
[CrossRef] [PubMed]

Ebbesen, T. W.

W. L. Barnes, A. Dereux, and T. W. Ebbesen, Nature 424, 824 (2003).
[CrossRef] [PubMed]

Eisler, H. J.

P. Mühlschlegel, H. J. Eisler, O. J. F. Martin, B. Hecht, and D. W. Pohl, Science 308, 1607 (2005).
[CrossRef] [PubMed]

Fromm, D. P.

P. J. Schuck, D. P. Fromm, A. Sundaramurthy, G. S. Kino, and W. E. Moerner, Phys. Rev. Lett. 94, 017402 (2005).
[CrossRef] [PubMed]

D. P. Fromm, A. Sundaramurthy, P. J. Schuck, G. Kino, and W. E. Moerner, Nano Lett. 4, 957 (2004).
[CrossRef]

García de Abajo, F. J.

I. Romero, J. Aizpurua, G. W. Bryant, and F. J. García de Abajo, Opt. Express 14, 9988 (2006).
[CrossRef] [PubMed]

J. Aizpurua, G. W. Bryant, L. J. Richter, F. J. García de Abajo, B. K. Kelley, and T. Mallouk, Phys. Rev. B 71, 235420 (2005).
[CrossRef]

García-Ramos, J. V.

V. Giannini, J. A. Sánchez-Gil, J. V. García-Ramos, and E. R. Méndez, Phys. Rev. B 75, 235447 (2007).
[CrossRef]

Giannini, V.

V. Giannini, J. A. Sánchez-Gil, J. V. García-Ramos, and E. R. Méndez, Phys. Rev. B 75, 235447 (2007).
[CrossRef]

O. Muskens, V. Giannini, J. A. Sánchez-Gil, and J. Gómez Rivas, Nano Lett. 7, 2871 (2007).
[CrossRef] [PubMed]

V. Giannini and J. A. Sánchez-Gil, J. Opt. Soc. Am. A 24, 2822 (2007).
[CrossRef]

Gómez Rivas, J.

O. Muskens, V. Giannini, J. A. Sánchez-Gil, and J. Gómez Rivas, Nano Lett. 7, 2871 (2007).
[CrossRef] [PubMed]

Greffet, J. J.

J. J. Greffet, Science 308, 1561 (2005).
[CrossRef] [PubMed]

Greffet, J.-J.

R. Carminati, J.-J. Greffet, C. Henkel, and J. M. Vigoureux, Opt. Commun. 261, 368 (2006).
[CrossRef]

Halas, N. J.

H. Wang, D. W. Brandl, P. Nordlander, and N. J. Halas, Acc. Chem. Res. 40, 53 (2007).
[CrossRef] [PubMed]

Hecht, B.

P. Mühlschlegel, H. J. Eisler, O. J. F. Martin, B. Hecht, and D. W. Pohl, Science 308, 1607 (2005).
[CrossRef] [PubMed]

Henkel, C.

R. Carminati, J.-J. Greffet, C. Henkel, and J. M. Vigoureux, Opt. Commun. 261, 368 (2006).
[CrossRef]

Johnson, P. B.

P. B. Johnson and R. W. Christy, Phys. Rev. B 6, 4370 (1972).
[CrossRef]

Käll, M.

H. Xu, J. Aizpurua, M. Käll, and P. Apell, Phys. Rev. E 62, 4318 (2000).
[CrossRef]

Kaminski, F.

Kelley, B. K.

J. Aizpurua, G. W. Bryant, L. J. Richter, F. J. García de Abajo, B. K. Kelley, and T. Mallouk, Phys. Rev. B 71, 235420 (2005).
[CrossRef]

Kelly, K. L.

K. L. Kelly, E. Coronado, L. L. Zhao, and G. C. Schatz, J. Phys. Chem. B 107, 668 (2003).
[CrossRef]

Kino, G.

D. P. Fromm, A. Sundaramurthy, P. J. Schuck, G. Kino, and W. E. Moerner, Nano Lett. 4, 957 (2004).
[CrossRef]

Kino, G. S.

P. J. Schuck, D. P. Fromm, A. Sundaramurthy, G. S. Kino, and W. E. Moerner, Phys. Rev. Lett. 94, 017402 (2005).
[CrossRef] [PubMed]

Kottmann, J. P.

J. P. Kottmann, O. J. F. Martin, D. R. Smith, and S. Schultz, Phys. Rev. B 64, 235402 (2001).
[CrossRef]

Kreibig, U.

U. Kreibig and M. Vollmer, Optical Properties of Metal Clusters (Springer, 1995).

Lakowicz, J. R.

J. R. Lakowicz, Anal. Biochem. 337, 171 (2005).
[CrossRef] [PubMed]

Li, K.

P. Nordlander, C. Oubre, E. Prodan, K. Li, and M. I. Stockman, Nano Lett. 4, 899 (2004).
[CrossRef]

Mallouk, T.

J. Aizpurua, G. W. Bryant, L. J. Richter, F. J. García de Abajo, B. K. Kelley, and T. Mallouk, Phys. Rev. B 71, 235420 (2005).
[CrossRef]

Martin, O. J. F.

P. Mühlschlegel, H. J. Eisler, O. J. F. Martin, B. Hecht, and D. W. Pohl, Science 308, 1607 (2005).
[CrossRef] [PubMed]

J. P. Kottmann, O. J. F. Martin, D. R. Smith, and S. Schultz, Phys. Rev. B 64, 235402 (2001).
[CrossRef]

Méndez, E. R.

V. Giannini, J. A. Sánchez-Gil, J. V. García-Ramos, and E. R. Méndez, Phys. Rev. B 75, 235447 (2007).
[CrossRef]

Moerner, W. E.

P. J. Schuck, D. P. Fromm, A. Sundaramurthy, G. S. Kino, and W. E. Moerner, Phys. Rev. Lett. 94, 017402 (2005).
[CrossRef] [PubMed]

D. P. Fromm, A. Sundaramurthy, P. J. Schuck, G. Kino, and W. E. Moerner, Nano Lett. 4, 957 (2004).
[CrossRef]

Mühlschlegel, P.

P. Mühlschlegel, H. J. Eisler, O. J. F. Martin, B. Hecht, and D. W. Pohl, Science 308, 1607 (2005).
[CrossRef] [PubMed]

Muskens, O.

O. Muskens, V. Giannini, J. A. Sánchez-Gil, and J. Gómez Rivas, Nano Lett. 7, 2871 (2007).
[CrossRef] [PubMed]

Nieto-Vesperinas, M.

S. E. Sburlan, L. A. Blanco, and M. Nieto-Vesperinas, Phys. Rev. B 73, 035403 (2006).
[CrossRef]

Nordlander, P.

H. Wang, D. W. Brandl, P. Nordlander, and N. J. Halas, Acc. Chem. Res. 40, 53 (2007).
[CrossRef] [PubMed]

P. Nordlander, C. Oubre, E. Prodan, K. Li, and M. I. Stockman, Nano Lett. 4, 899 (2004).
[CrossRef]

Novotny, L.

Oubre, C.

P. Nordlander, C. Oubre, E. Prodan, K. Li, and M. I. Stockman, Nano Lett. 4, 899 (2004).
[CrossRef]

Pohl, D. W.

P. Mühlschlegel, H. J. Eisler, O. J. F. Martin, B. Hecht, and D. W. Pohl, Science 308, 1607 (2005).
[CrossRef] [PubMed]

Prock, A.

R. R. Chance, A. Prock, and R. Silbey, Adv. Chem. Phys. 37, 1 (1978).
[CrossRef]

Prodan, E.

P. Nordlander, C. Oubre, E. Prodan, K. Li, and M. I. Stockman, Nano Lett. 4, 899 (2004).
[CrossRef]

Ratner, M. A.

K. L. Shuford, M. A. Ratner, and G. C. Schatz, J. Chem. Phys. 123, 114713 (2005).
[CrossRef]

Richter, L. J.

J. Aizpurua, G. W. Bryant, L. J. Richter, F. J. García de Abajo, B. K. Kelley, and T. Mallouk, Phys. Rev. B 71, 235420 (2005).
[CrossRef]

Rogobete, L.

Romero, I.

Sánchez-Gil, J. A.

O. Muskens, V. Giannini, J. A. Sánchez-Gil, and J. Gómez Rivas, Nano Lett. 7, 2871 (2007).
[CrossRef] [PubMed]

V. Giannini, J. A. Sánchez-Gil, J. V. García-Ramos, and E. R. Méndez, Phys. Rev. B 75, 235447 (2007).
[CrossRef]

V. Giannini and J. A. Sánchez-Gil, J. Opt. Soc. Am. A 24, 2822 (2007).
[CrossRef]

Sandoghdar, V.

Sburlan, S. E.

S. E. Sburlan, L. A. Blanco, and M. Nieto-Vesperinas, Phys. Rev. B 73, 035403 (2006).
[CrossRef]

Schatz, G. C.

K. L. Shuford, M. A. Ratner, and G. C. Schatz, J. Chem. Phys. 123, 114713 (2005).
[CrossRef]

K. L. Kelly, E. Coronado, L. L. Zhao, and G. C. Schatz, J. Phys. Chem. B 107, 668 (2003).
[CrossRef]

Schuck, P. J.

P. J. Schuck, D. P. Fromm, A. Sundaramurthy, G. S. Kino, and W. E. Moerner, Phys. Rev. Lett. 94, 017402 (2005).
[CrossRef] [PubMed]

D. P. Fromm, A. Sundaramurthy, P. J. Schuck, G. Kino, and W. E. Moerner, Nano Lett. 4, 957 (2004).
[CrossRef]

Schultz, S.

J. P. Kottmann, O. J. F. Martin, D. R. Smith, and S. Schultz, Phys. Rev. B 64, 235402 (2001).
[CrossRef]

Shuford, K. L.

K. L. Shuford, M. A. Ratner, and G. C. Schatz, J. Chem. Phys. 123, 114713 (2005).
[CrossRef]

Silbey, R.

R. R. Chance, A. Prock, and R. Silbey, Adv. Chem. Phys. 37, 1 (1978).
[CrossRef]

Smith, D. R.

J. P. Kottmann, O. J. F. Martin, D. R. Smith, and S. Schultz, Phys. Rev. B 64, 235402 (2001).
[CrossRef]

Søndergaard, T.

Stockman, M. I.

P. Nordlander, C. Oubre, E. Prodan, K. Li, and M. I. Stockman, Nano Lett. 4, 899 (2004).
[CrossRef]

Sundaramurthy, A.

P. J. Schuck, D. P. Fromm, A. Sundaramurthy, G. S. Kino, and W. E. Moerner, Phys. Rev. Lett. 94, 017402 (2005).
[CrossRef] [PubMed]

D. P. Fromm, A. Sundaramurthy, P. J. Schuck, G. Kino, and W. E. Moerner, Nano Lett. 4, 957 (2004).
[CrossRef]

Vigoureux, J. M.

R. Carminati, J.-J. Greffet, C. Henkel, and J. M. Vigoureux, Opt. Commun. 261, 368 (2006).
[CrossRef]

Vollmer, M.

U. Kreibig and M. Vollmer, Optical Properties of Metal Clusters (Springer, 1995).

Wang, H.

H. Wang, D. W. Brandl, P. Nordlander, and N. J. Halas, Acc. Chem. Res. 40, 53 (2007).
[CrossRef] [PubMed]

Xu, H.

H. Xu, J. Aizpurua, M. Käll, and P. Apell, Phys. Rev. E 62, 4318 (2000).
[CrossRef]

Zhao, L. L.

K. L. Kelly, E. Coronado, L. L. Zhao, and G. C. Schatz, J. Phys. Chem. B 107, 668 (2003).
[CrossRef]

Acc. Chem. Res.

H. Wang, D. W. Brandl, P. Nordlander, and N. J. Halas, Acc. Chem. Res. 40, 53 (2007).
[CrossRef] [PubMed]

Adv. Chem. Phys.

R. R. Chance, A. Prock, and R. Silbey, Adv. Chem. Phys. 37, 1 (1978).
[CrossRef]

Anal. Biochem.

J. R. Lakowicz, Anal. Biochem. 337, 171 (2005).
[CrossRef] [PubMed]

J. Chem. Phys.

K. L. Shuford, M. A. Ratner, and G. C. Schatz, J. Chem. Phys. 123, 114713 (2005).
[CrossRef]

J. Opt. Soc. Am. A

J. Phys. Chem. B

K. L. Kelly, E. Coronado, L. L. Zhao, and G. C. Schatz, J. Phys. Chem. B 107, 668 (2003).
[CrossRef]

Nano Lett.

O. Muskens, V. Giannini, J. A. Sánchez-Gil, and J. Gómez Rivas, Nano Lett. 7, 2871 (2007).
[CrossRef] [PubMed]

P. Nordlander, C. Oubre, E. Prodan, K. Li, and M. I. Stockman, Nano Lett. 4, 899 (2004).
[CrossRef]

D. P. Fromm, A. Sundaramurthy, P. J. Schuck, G. Kino, and W. E. Moerner, Nano Lett. 4, 957 (2004).
[CrossRef]

Nature

W. L. Barnes, A. Dereux, and T. W. Ebbesen, Nature 424, 824 (2003).
[CrossRef] [PubMed]

Opt. Commun.

R. Carminati, J.-J. Greffet, C. Henkel, and J. M. Vigoureux, Opt. Commun. 261, 368 (2006).
[CrossRef]

Opt. Express

Opt. Lett.

Phys. Rev. B

J. P. Kottmann, O. J. F. Martin, D. R. Smith, and S. Schultz, Phys. Rev. B 64, 235402 (2001).
[CrossRef]

P. B. Johnson and R. W. Christy, Phys. Rev. B 6, 4370 (1972).
[CrossRef]

S. E. Sburlan, L. A. Blanco, and M. Nieto-Vesperinas, Phys. Rev. B 73, 035403 (2006).
[CrossRef]

J. Aizpurua, G. W. Bryant, L. J. Richter, F. J. García de Abajo, B. K. Kelley, and T. Mallouk, Phys. Rev. B 71, 235420 (2005).
[CrossRef]

V. Giannini, J. A. Sánchez-Gil, J. V. García-Ramos, and E. R. Méndez, Phys. Rev. B 75, 235447 (2007).
[CrossRef]

Phys. Rev. E

H. Xu, J. Aizpurua, M. Käll, and P. Apell, Phys. Rev. E 62, 4318 (2000).
[CrossRef]

Phys. Rev. Lett.

P. J. Schuck, D. P. Fromm, A. Sundaramurthy, G. S. Kino, and W. E. Moerner, Phys. Rev. Lett. 94, 017402 (2005).
[CrossRef] [PubMed]

L. Novotny, Phys. Rev. Lett. 98, 266802 (2007).
[CrossRef] [PubMed]

Science

J. J. Greffet, Science 308, 1561 (2005).
[CrossRef] [PubMed]

P. Mühlschlegel, H. J. Eisler, O. J. F. Martin, B. Hecht, and D. W. Pohl, Science 308, 1607 (2005).
[CrossRef] [PubMed]

Other

U. Kreibig and M. Vollmer, Optical Properties of Metal Clusters (Springer, 1995).

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Figures (2)

Fig. 1
Fig. 1

(a) Scattering cross section for a Ag trimer (solid curve) consisting of a cylinder with 20 nm of diameter between two triangles; each triangle has 20 nm of base and 20 nm of height. The distance between each triangle and the cylinder is 5 nm , the electromagnetic field impinging from the left (see inset), p polarization. SCS of a Ag triangular particle (dashed-dotted curve) and of a cylinder (dashed curve). (b), (c) Near electric field intensity in a log 10 scale (p polarization) at the plasmonic resonances, normalized to that of the incident field. (b) λ = 390 nm , (c) λ = 334 nm .

Fig. 2
Fig. 2

Normalized (a) radiative and (b) nonradiative decay rates and (c) quantum yield of an emitter placed at a constant distance of 2.5 nm from the cylinder of the nanotrimer shown in Fig. 1, at λ = 390 nm (main SPR), for varying angles from θ = 0 ° (center of one the trimer gaps) to 90°: dipoles oriented along either parallel (with symbols) or perpendicular (without symbols) to the dimer axis with intrinsic quantum yields of η 0 = 99 % (solid curves), η 0 = 40 % (dashed curves), and η 0 = 1 % (dashed-dotted curves).

Equations (2)

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γ γ 0 = 1 + 3 η 0 c 3 2 p 0 2 ω 3 I [ p 0 * E ( r 0 , λ 2 ) ] ,
I I 0 = η ( λ 2 ) η 0 E ( λ 1 ) 2 ,

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