EU-funded researchers have shown how small nanotech particles suspended in a liquid separate out by size as the liquid evaporates, an effect that can lead to techniques for making layered structures that improve the performance of many everyday products, such as sun cream and electronics.
The EU-funded BARRIER PLUS project has published results from experiments where they have been able to successfully demonstrate, both theoretically and experimentally, that paint consisting of two particles of two different sizes, if they are large enough, separate out during drying.