Abstract
The optical properties of the Au–Ag alloy nanowire coated with a cylindrical shell with radial dielectric anisotropy are investigated based on quasistatic theory. Numerical results show that the surface plasmon resonance (SPR) peak is redshifted with increasing the component ratio of Au in the alloy, while the intensity of extinction section at the SPR increases with increasing the component ratio of Ag in the alloy. In addition, as the extent of anisotropy of the shell increases, the extinction section at SPR wavelength decreases and the SPR wavelength is redshifted, but compared with the isotropic shell consisting of comparable dielectric constant materials, the SPR has a distinct blueshift for anisotropic shell. We also find that the field enhancement can be completely concentrated inside the anisotropic shell and the electromagnetic transparency can be exhibited.
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References
G. Mie, Ann. Phys. 25, 377 (1908)
M. Born, E. Wolf, Principles of Optics, 7th edn. (Cambridge University Press, Cambridge, 1999)
V.I. Belotelov, G. Carotenuto, L. Nicolais, G.P. Pepe, A.K. Zvezdin, Eur. Phys. J. B 45, 317 (2005)
R.K. Roy, S.K. Mandal, A.K. Pal, Eur. Phys. J. B 33, 109 (2003)
S. Link, Z.L. Wang, M.A. El-Sayed, J. Phys. Chem. B 103, 3529 (1999)
R. Salvati, A. Longo, G. Carotenuto, L. Nicolais, S. De Nicola, G.P. Pepe, Eur. Phys. J. B 41, 43 (2004)
D.I. Gittins, F. Caruso, J. Phys. Chem. B 105, 6846 (2001)
M.D. Malinsky, K.L. Kelly, G.C. Schatz, R.P. Van Duyne, J. Am. Chem. Soc. 123, 1471 (2001)
J.B. Jackson, S.L. Westcott, L.R. Hirsch, J.L. West, N.J. Halas, Appl. Phys. Lett. 82, 257 (2003)
U. Schroter, A. Dereux, Phys. Rev. B 64, 125420 (2001)
P. Peterlin, S. Svetina, B. Zeks, J. Phys., Condens. Matter 19, 136220 (2007)
T. Ambjörnsson, G. Mukhopadhyay, S.P. Apell, M. Käll, Phys. Rev. B 73, 085412 (2006)
S.Y. Park, D. Stroud, Appl. Phys. Lett. 94, 217401 (2005)
J. Müller, C. Sönnichsen, H. von Poschinger, G. von Plessen, T.A. Klar, J. Feldman, Appl. Phys. Lett. 81, 171 (2002)
D.H. Liu, C. Xu, P.M. Hui, Appl. Phys. Lett. 92, 181901 (2008)
D.J. Wu, X.J. Liu, Appl. Phys. A 94, 537 (2009)
L. Gao, T.H. Fung, K.W. Yu, C.W. Qiu, Phys. Rev. E 78, 046609 (2008)
E. Braun, Y. Eichen, U. Sivan, G. Ben-Yoseph, Nature 391, 775 (1998)
J.C. Weeber, A. Dereux, C. Girard, J.R. Krenn, J.P. Goudonnet, Phys. Rev. B 60, 9061 (1999)
F.J. García-Vidal, J.M. Pitarke, J.B. Pendry, Phys. Rev. B 58, 6783 (1998)
S.L. Westcott, J.B. Jackson, C. Radloff, N.J. Halas, Phys. Rev. B 66, 155431 (2002)
R.L. Chern, X.X. Liu, C.C. Chang, Phys. Rev. E 76, 016609 (2007)
P.B. Johnson, R.W. Christy, Phys. Rev. B 6, 4370 (1972)
C. Kittel, Introduction to Solid State Physics (Wiley, New York, 1976)
V.I. Belotelov, G. Carotenuto, A. Luongo, L. Nicolais, G. Pepe, P. Perlo, A.K. Zvezdin, J. Appl. Phys. 99, 044304 (2006)
J. Zhu, J. Phys. Chem. C 113, 3164 (2009)
C.F. Bohren, D.R. Huffman, Absorption and Scattering of Light by Small Particles (Wiley, New York, 1983)
K.L. Kelly, E. Coronado, L.L. Zhao, G.C. Schatz, J. Phys. Chem. 107, 668 (2003)
S.Y. Park, D. Stroud, Appl. Phys. Lett. 85, 2920 (2004)
D.J. Wu, X.D. Xu, X.J. Liu, Solid State Commun. 148, 163 (2008)
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Pan, T., Zang, T., Mao, H. et al. Optical properties of the Au–Ag alloy nanowire coated with an anisotropic shell. Appl. Phys. A 100, 159–164 (2010). https://doi.org/10.1007/s00339-010-5610-7
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DOI: https://doi.org/10.1007/s00339-010-5610-7