SPES promising method for micro- and nanoparticle analysis
Methods for characterizing physical properties of micro and nanoparticles are of increasing importance for research and industry. Optical methods are non-invasive and in some cases can be used for routine or in-line applications. The company EOS (Effective optical Systems) was founded in 2014 and immediately came up with a spin-off of a technique developed at a university for particle size analysis: SPES (Single Particle Extinction and Scattering).
SPES is a promising, and therefore patented, light scattering technique that allows the analysis, distribution and counting of individual particles in a liquid based on their optical properties. That doesn't seem like anything new. We already know the DLS (Dynamic Light Scattering) technique and the LD (Laser Diffraction) technique, which are also based on light scattering. However, SPES is able to characterize both micro- and (sub) nanoparticles with very high resolution. The technology is therefore able to provide more, and simultaneously, important information about “larger” microparticles and nanoparticles in the same liquid.