对动态光散射颗粒测量技术中几个问题的讨论

New advance in study of particle sizing with dynamic light scattering

在分析国内外动态光散射颗粒测量技术研究动态的基础上,对在动态光散射颗粒测量技术中应用的新理论和新方法,通过增加自相关函数的拟合参数来克服热晕效应的影响,用单束光互相关方法提高信号的时间分辨率及测量浓悬浮颗粒时的改进装置等几个问题进行了讨论.

Dynamic light scattering (DLS) as an important technique has been intensively researched and applied widely for more than three decades. Specially, in recent years, much significant progress has been made, such as miniature laser light scattering instrumentation for particle size analysis, modification for the thermal blooming effect to yield the correct particle size, statistical processing of photons(SPP), one-beam or two-beam cross correlation technique and use of higher order photon correlation spectroscopy to recover asymmetric spectral lineshape.