A size selective nanoparticle collection device based on diffusion and thermophoresis

There is a growing industry fabricating products that are based on nanoparticles (particle diameter d_p≤100 nm). The production of these particles requires detection, classification and characterisation of even smaller particles because of, e.g. preventing unwanted particle emissions from the processes and health issues. Monitoring of the processes is needed on one hand for product quality determinations, on the other hand to ensure safe and particle-free working conditions. Thus simple, fast and reliable measurement devices are needed for particle characterisation.