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The extinction spectra and the electric field distribution of the surface plasmon coupling of gold nanoring dimer in horizontal and vertical arrangements are calculated by the discrete dipole approximation method. It is found that the peaks of extinction spectra and electric field distribution of the surface plasmon coupling are sensitive to the size and the separation gap between gold nanorings. It is demonstrated that the peaks of extinction spectra will be red-shifted or blue-shifted due to the different structure parameters of gold nanorings. Because of the effect of the polarization charge coupling between adjacent gold nanoring, the local electric field distribution is found to be stronger for the gold nanoring dimer and trimer in horizontal arrangement than for the single gold nanoring. The horizontal gold nanoring trimer has stronger enhancement of local electric field than the dimer. It shows that the greater separation gap has the weaker local electric field distribution for the gold nanoring dimer and trimer in horizontal arrangement. Therefore the gold nanoring horizontal array is predicted to be an ideal surface enhanced Raman scattering substrate and is expected to have potential applications in biological and chemical detections.
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Keywords:
- gold nanoring structures /
- plasmon resonance extinction spectra /
- effect coupling /
- surface enhanced electric field
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[14] Su K H, Wei Q H, Zhang X, Mock J J, Smith D R, Schultz S 2003 Nano Lett. 3 1087
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[16] Teo S L, Lin V K, Marty R, Large N, Llado E A, Arbouet A, Girard C, Aizpurua J, Tripathy S, Mlayah A 2010 Opt. Express 18 22271
[17] Banaee M G, Crozier K B. 2010 Opt. Lett. 35 760
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[19] Draine B T, Flatau P J 2008 J. Opt. Soc. Am. A 25 2693
[20] Johnson P B, Christy R W 1972 Phys. Rev. B 6 4370
[21] Jain P K, Huang W, El-Sayed M A 2007 Nano Lett. 7 2080
[22] Rechberger W, Hohenau A, Leitner A, Krenn J R, Lamprecht B, Aussenegg F R 2003 Opt. Commun. 220 137
[23] Jain P K, El-Sayed M A 2010 Chem. Phys. Lett. 487 153
[24] Gunnarsson L, Rindzevicius T, Prikulis J, Kasemo B, Käll M, Zou S L, Schatz G C 2005 J. Phys. Chem. B 109 1079
[25] Prodan E, Radloff C, Halas N J, Nordlander P 2003 Science 302 419
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[1] Liz-Marzán LM 2006 Langmuir 22 32
[2] Tian Z Q, Ren B, Wu D Y 2002 J. Phys. Chem. B 106 9463
[3] Campion A, Kambhampati P 1998 Chem. Soc. Rev. 27 241
[4] Zhang Z Y, Zhao Y P 2007 J. Appl. Phys. 102 113308
[5] Mo D, Liu J, Duan J L, Yao H J, Hou M D, Sun Y M, Chen Y F, Xue Z H, Zhang L 2009 Acta Phys. Sin. 58 2599 (in Chinese) [莫丹, 刘杰, 段敬来, 姚会军, 侯明东, 孙友梅, 陈艳峰, 薛智浩, 张苓 2009 58 2599]
[6] Wu D J, Xu X D, Liu X J 2008 Solid State Commun. 146 7
[7] Li X L, Zhang Z D, Wang H Y, Xiong Z H, Zhang Z Y 2011 Acta Phys. Sin. 60 047807 (in Chinese) [李雪莲, 张志东, 王红艳, 熊祖洪, 张中月 2011 60 047807]
[8] Zhao S, Yin J B, Zhao X P 2010 Acta Phys. Sin. 59 3302 (in Chinese) [赵晟, 尹剑波, 赵晓鹏 2010 59 3302]
[9] Barbillon G, Bijeon J L, Plain J, Royer P 2009 Thin Solid Films. 517 2997
[10] Li S, Zhong M L, Zhang L J, Xiong Z H, Zhang Z Y 2011 Acta Phys. Sin. 60 087806 (in Chinese) [李山, 钟明亮, 张礼杰, 熊祖洪, 张中月 2011 60 087806]
[11] Zhang Z Y, Xiong Z H 2010 Scientia Sinica Phys Mech & Astron 40 330 (in Chinese) [张中月, 熊祖洪 2010 中国科学: 物理学力学 天文学 40 330]
[12] Sun Z H, Wang H Y, Zhang Z D, Zhang Z Y, Y 2011 Acta Phys. Sin. 60 047808 (in Chinese) [孙中华, 王红艳, 张志东, 张中月 2011 60 047808]
[13] Liu Y J, Zhang Z Y, Zhao Y P 2008 Appl. Phys. Lett. 93 173106
[14] Su K H, Wei Q H, Zhang X, Mock J J, Smith D R, Schultz S 2003 Nano Lett. 3 1087
[15] Zhao L L, Kelly K L, Schatz G C 2003 J. Phys. Chem. B 107 7343
[16] Teo S L, Lin V K, Marty R, Large N, Llado E A, Arbouet A, Girard C, Aizpurua J, Tripathy S, Mlayah A 2010 Opt. Express 18 22271
[17] Banaee M G, Crozier K B. 2010 Opt. Lett. 35 760
[18] Purcell E M, Pennypacker C R 1973 Astrophys. J. 186 705
[19] Draine B T, Flatau P J 2008 J. Opt. Soc. Am. A 25 2693
[20] Johnson P B, Christy R W 1972 Phys. Rev. B 6 4370
[21] Jain P K, Huang W, El-Sayed M A 2007 Nano Lett. 7 2080
[22] Rechberger W, Hohenau A, Leitner A, Krenn J R, Lamprecht B, Aussenegg F R 2003 Opt. Commun. 220 137
[23] Jain P K, El-Sayed M A 2010 Chem. Phys. Lett. 487 153
[24] Gunnarsson L, Rindzevicius T, Prikulis J, Kasemo B, Käll M, Zou S L, Schatz G C 2005 J. Phys. Chem. B 109 1079
[25] Prodan E, Radloff C, Halas N J, Nordlander P 2003 Science 302 419
[26] Aizpurua J, Hanarp P, Sutherland D S, Käll M, Bryant G W, Abajo F J G D 2003 Phys. Rev. Lett. 90 5
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