Archive for the What is? Category

Dynamic Light Scattering Recap

Over the last couple of years we have looked deeply and widely into the subject of dynamic light scattering. I think it’s worth stopping, from time to time, to look again at the basic principles and restate them – perhaps in different words – to make sure they are understood. Continue reading Dynamic Light Scattering Recap

What Is Zeta Potential

In instruments using electrophoretic light scattering, a sample is subjected to light while its particles move under the influence of an oscillating electric field. Analysis of shifting wavelength, or doppler shift, in the resulting scattered light allows determination of electrophoretic mobility – from which zeta potential can be calculated. Continue reading What Is Zeta Potential