Dipole, quadrupole and octupole plasmon resonance modes in non-concentric nanocrescent/nanodisk structure: local field enhancement in the visible and near infrared regions

Optics Express
Y ZhangZ Z Xu

Abstract

By deviating the nanodisk from the center in the silver nanocrescent/nanodisk structure, we find that the dipole, quadrupole and octupole modes can all induce very high local electric field enhancement (LFE, more than 750) for the coupling of nanocrescent and crescent gap modes, which makes the resonant wavelengths of the non-concentric nanostructures change from the visible to near infrared regions. In addition, the LFE factor of the quadrupole mode is more than 1000, which is suitable for single molecular detection by local surface enhanced spectroscopy.

References

Dec 20, 2003·Physical Review Letters·Kuiru LiDavid J Bergman
Nov 5, 2004·Physical Review Letters·Mark I Stockman
May 27, 2006·Science·J B PendryD R Smith
Jul 11, 2006·Proceedings of the National Academy of Sciences of the United States of America·Hui WangNaomi J Halas
May 24, 2008·Nature Materials·Jeffrey N AnkerRichard P Van Duyne
Jan 23, 2009·Nano Letters·Jorge ZuloagaPeter Nordlander
Apr 10, 2009·Nano Letters·Liz Y WuLuke P Lee
Sep 17, 2009·Nano Letters·Yeonho ChoiLuke P Lee
Jul 30, 2010·ACS Applied Materials & Interfaces·Teng QiuPaul K Chu
Sep 16, 2010·Nano Letters·Yu LuoAlexandre Aubry
Sep 21, 2010·Nature Nanotechnology·Daniel R WardDouglas Natelson
Jul 9, 2008·Nanotechnology·Benjamin M Ross, Luke P Lee

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cell Imaging in CNS

Here is the latest research on cell imaging and imaging modalities, including light-sheet microscopy, in the central nervous system.