多层金属纳米壳中发光或拉曼活性层的表面等离子体增强
Plasmonics enhancement of a luminescent or Raman-active layer in a multilayered metallic nanoshell.
作者信息
Norton Stephen J, Vo-Dinh Tuan
机构信息
Fitzpatrick Institute for Photonics, Duke University, Durham, North Carolina 27708, USA.
出版信息
Appl Opt. 2009 Sep 20;48(27):5040-9. doi: 10.1364/AO.48.005040.
Abstract
Expressions for the enhancement of the far-field scattering cross section of a luminescent or Raman-active compound contained within a multilayered nanosphere are derived, where the active compound resides between an outer metallic shell and a metallic core. The quasi-static approximation is assumed for silver and gold particles using a Lorentz-Drude model of the dielectric function. An attempt has also been made to account for the effect of electron scattering from the boundaries of the shell on the enhancement calculation.
摘要
推导了包含在多层纳米球中的发光或拉曼活性化合物远场散射截面增强的表达式，其中活性化合物位于外部金属壳和金属核之间。对于银和金颗粒，使用介电函数的洛伦兹 - 德鲁德模型假设为准静态近似。还尝试在增强计算中考虑壳边界处电子散射的影响。
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