We propose a method for dielectric microparticles size measurement based on the temporal evolution of speckle pattern. We conducted experiments using aqueous suspension of different standard spherical latex particles that span a size range between 5 µm and 100 µm.

To analyze the speckle pattern data, we use different and independent qualitative and quantitative algorithms. We built calibration curves between the actual size of the particles provided by the manufacturer and the corresponding descriptors derived from each quantitative algorithm of the speckle measurement technique.

We show that this technique provides a useful, non-invasive and low-cost tool for determining the diameter of dielectric microparticles.

我们提出了一种基于斑点图案随时间变化的介电微粒尺寸测量方法。我们使用尺寸范围在5 µm至100 µm之间的不同标准球形胶​​乳颗粒的水悬浮液进行了实验。

为了分析斑点图案数据，我们使用了不同且独立的定性和定量算法。我们在制造商提供的颗粒的实际尺寸与从散斑测量技术的每种定量算法得出的相应描述符之间建立了校准曲线。

我们表明，这项技术为确定介电微粒的直径提供了一种有用的，非侵入性的低成本工具。