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The effects of shell thickness, inner core size, and dielectric constants of core and embedding medium on the localized surface plasmon resonance wavelength of gold nanoshell are investigated by Mie theory. The results show that the extinction peak of gold nanoshell is first blue-shifted and then red-shifted with the increase of shell thickness, that the shift shell thickness corresponding to quadrupolar wavelength is greater than that corresponding to dipolar wavelength, and that the ratio of the shift shell thickness to the inner core size decreases with the increase of inner core size, and increases with the increase of dielectric constant of inner core or embedding medium. The resonance peaks in the scattering spectra have similar phenomena to those in extinction spectra as the shell thickness increases. The shift of the spectral peak is ascribed to the plasmon hybridization and phase retardation effect.
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Keywords:
- gold nanoshells /
- plasmon resonance /
- wavelength tuning
[1] Li Z Y, Li J F 2011 Chin. Sci. Bull. 56 2631 (in Chinese) [李志远, 李家方 2011 科学通报 56 2631]
[2] Oldenburg S J, Averitt R D, Westcott S L, Halas N J 1998 Chem. Phys. Lett. 288 243
[3] Cole J R, Halas N J 2006 Appl. Phys. Lett. 89 153120
[4] Bai Y M, Wang J, Chen N F, Yao J X, Zhang X W, Yin Z G, Zhang H, Huang T M 2011 Chin. Phys. Lett. 28 087306
[5] Wu D J, Liu X J, 2010 Appl. Phys. Lett. 97 061904
[6] Liu C H, Li B Q 2011 J. Phys. Chem. C 115 5323
[7] Zhang H X, Gu Y, Gong Q H 2008 Chin. Phys. B 17 2567
[8] Prodan E, Nordlander P 2004 J. Chem. Phys. 120 5444
[9] Westcott S L, Jackson J B, Radloff C, Halas N J 2002 Phys. Rev. B 66 155431
[10] 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 Lett. 8 1212
[11] Averitt R D, Westcott S L, Halas N J 1999 J. Opt. Soc. Am. B 16 1824
[12] Wang H, Brandl D W, Nordlander P, Halas N J 2007 Acc. Chem. Res. 40 53
[13] Li B Q, Liu C H 2011 Opt. Lett. 36 247
[14] Johnson P B, Christy R W 1972 Phys. Rev. B 6 4370
[15] Bohren C F, Huffman D R 1983 Absorption and Scattering of Light by Small Particles (2nd Edn.) (New York: John Wiley & Sons) p103
[16] Prodan E, Lee A, Nordlander P 2002 Chem. Phys. Lett. 360 325
[17] Wu D J, Liu X J 2008 Acta Phys. Sin. 57 5138 (in Chinese) [吴大建, 刘晓峻 2008 57 5138]
[18] Zhu J, Li J J, Zhao J W 2011 Appl. Phys. Lett. 99 101901
[19] Han T, Meng F Y, Zhang S, Wang J Q, Cheng X M 2011 Acta Phys. Sin. 60 027303 (in Chinese) [韩涛, 孟凡英, 张松, 汪建强, 程雪梅 2011 60 027303]
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[1] Li Z Y, Li J F 2011 Chin. Sci. Bull. 56 2631 (in Chinese) [李志远, 李家方 2011 科学通报 56 2631]
[2] Oldenburg S J, Averitt R D, Westcott S L, Halas N J 1998 Chem. Phys. Lett. 288 243
[3] Cole J R, Halas N J 2006 Appl. Phys. Lett. 89 153120
[4] Bai Y M, Wang J, Chen N F, Yao J X, Zhang X W, Yin Z G, Zhang H, Huang T M 2011 Chin. Phys. Lett. 28 087306
[5] Wu D J, Liu X J, 2010 Appl. Phys. Lett. 97 061904
[6] Liu C H, Li B Q 2011 J. Phys. Chem. C 115 5323
[7] Zhang H X, Gu Y, Gong Q H 2008 Chin. Phys. B 17 2567
[8] Prodan E, Nordlander P 2004 J. Chem. Phys. 120 5444
[9] Westcott S L, Jackson J B, Radloff C, Halas N J 2002 Phys. Rev. B 66 155431
[10] 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 Lett. 8 1212
[11] Averitt R D, Westcott S L, Halas N J 1999 J. Opt. Soc. Am. B 16 1824
[12] Wang H, Brandl D W, Nordlander P, Halas N J 2007 Acc. Chem. Res. 40 53
[13] Li B Q, Liu C H 2011 Opt. Lett. 36 247
[14] Johnson P B, Christy R W 1972 Phys. Rev. B 6 4370
[15] Bohren C F, Huffman D R 1983 Absorption and Scattering of Light by Small Particles (2nd Edn.) (New York: John Wiley & Sons) p103
[16] Prodan E, Lee A, Nordlander P 2002 Chem. Phys. Lett. 360 325
[17] Wu D J, Liu X J 2008 Acta Phys. Sin. 57 5138 (in Chinese) [吴大建, 刘晓峻 2008 57 5138]
[18] Zhu J, Li J J, Zhao J W 2011 Appl. Phys. Lett. 99 101901
[19] Han T, Meng F Y, Zhang S, Wang J Q, Cheng X M 2011 Acta Phys. Sin. 60 027303 (in Chinese) [韩涛, 孟凡英, 张松, 汪建强, 程雪梅 2011 60 027303]
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