The near-field enhancement of silica-silver-gold (SSG) nanoshells has been investigated by using Mie theory. If the thickness of Au shell is smaller than 5 nm, the maximum of near-field for SSG increases first and then decreases with increasing Ag layer thickness. Thus, the near-field for SSG can be modified by Ag layer and can possess more excellent near-field enhancement. If the thickness of Au shell is larger than 10 nm, the maximum of near-field of SSG nanoshell decreases with increasing Ag layer thickness. We further discuss the influence of Au shell thickness on the near-field of SSG nanoshell. © 2010 American Institute of Physics.
CITATION STYLE
Wu, D. J., & Liu, X. J. (2010). Optimization of silica-silver-gold layered nanoshell for large near-field enhancement. Applied Physics Letters, 96(15). https://doi.org/10.1063/1.3398032
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