论文标题
MIE理论中吸收横截面的最大位置的令人着迷的分支解释了
An intriguing branching of the maximum position of the absorption cross section in Mie theory explained
论文作者
论文摘要
可以利用对散射和吸收横截面最大位置的潜在控制，以更好地调整纳米颗粒，以实现特定的轻度相互作用应用。在这里，我们详细说明了相对于金属球形粒子局部表面等离子体共振（LSPR）以及剩余的散射和灭绝横截面，吸收横截面峰值明显的蓝移的机制。这种横截面最大值的分支需要一定的尺寸参数参数x〜0.7的阈值，并且是获得高荧光增强的先决条件，因为高辐射率增强的光谱区域与高辐射率增强的高光谱区域分离。结果是，吸收横截面的最大值不能用作x> 0.7的LSPR位置的定义。
A potential control over the position of maxima of scattering and absorption cross-sections can be exploited to better tailor nanoparticles for specific light-matter interaction applications. Here we explain in detail the mechanism of an appreciable blue shift of the absorption cross-section peak relative to a metal spherical particle localized surface plasmon resonance (LSPR) and remaining scattering and extinction cross sections. Such a branching of cross sections maxima requires a certain threshold value of size parameter x~0.7 and is a prerequisite for obtaining high fluorescence enhancements, because the spectral region of high radiative rate enhancement becomes separated from the spectral region of high non-radiative rate enhancement. A consequence is that the maximum of the absorption cross section cannot be used as the definition of the LSPR position for x>0.7.
