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首页> 外文期刊>Applied optics >Colors of transparent submicron suspensions on approaching the Rayleigh regime
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Colors of transparent submicron suspensions on approaching the Rayleigh regime

机译：接近瑞利体系的透明亚微米悬浮液的颜色

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摘要

The features of scattered and transmitted light by dilute suspensions of transparent submicron particles are investigated both in the spectral and in the perceived colorimetric domains, as a function of effective particle diameter D, particle-host refractive-index mismatch m, and scattering angle theta. Our results show that the wavelength lambda-dependence of the scattering and extinction cross sections remains quite similar well beyond the Rayleigh regime up to particle sizes of a few hundreds nm, but only for specific scattering angles that depend on D and m, and tend to 90 deg on approaching the Rayleigh regime. Close to this limit (D/lambda 1), a simple criterion that relates the perceived scattering color at theta velence 90 deg and the ratio of the sample extinction coefficients at two properly selected wavelengths is demonstrated. A comparison between computed and measured data is presented.
机译：在光谱和感知比色域中研究了透明亚微米颗粒稀悬液的散射和透射光特征，它们是有效粒径D，颗粒-主体折射率失配m和散射角θ的函数。我们的结果表明，散射和消光截面的波长λ依存性在瑞利范围之外直至几百纳米，仍然非常相似，但仅对于依赖于D和m的特定散射角，并且倾向于接近瑞利政权时为90度。接近该极限（d /λ 1），一个简单的标准，即在THETA Velence的90度涉及感知散射颜色和样品的消光系数的以两个适当选择的波长的比率被证实。给出了计算数据和测量数据之间的比较。

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