论文标题
用于测量胶体动力学的可变角度超近近差动态光散射的演示
Demonstration of variable angle Super-Heterodyne Dynamic Light Scattering for measuring colloidal dynamics
论文作者
论文摘要
我们展示了一种原型光散射仪器，该仪器结合了频域方法，从超氧化多普勒速度测定仪中的中间散射函数以及标准同源性动态光散射仪的多功能性与大量散射向量进行研究。与相关时间结构域中的参考实验相比，我们表明新方法可以以高精度和准确性来确定扩散常数，从而确定流体动力半径。不久将讨论可能的未来应用。
We demonstrate a prototype light scattering instrument combining a frequency domain approach to the intermediate scattering function from Super-Heterodyning Doppler Velocimetry with the versatility of a standard homodyne Dynamic Light Scattering goniometer setup for investigations over a large range of scattering vectors. Comparing to reference experiments in correlation-time domain, we show that the novel approach can determine diffusion constants and hence hydrodynamic radii with high precision and accuracy. Possible future applications are discussed shortly.
