# rmx-s-gst: similar to the "Brazil Nut effect", a everyday example

<< If you shake a can of mixed nuts before opening it, you can count on finding the walnuts on top and the peanuts at the bottom. This is an everyday example of the “spontaneous”, demixing of heterogeneously sized particles, popularly known as the Brazil Nut effect. The phenomenon is observed in all granular systems consisting of particles of unequal sizes, where the imposition of an undirected force results in random active movements of its constituents. >>

http://www.en.uni-muenchen.de/news/newsarchiv/2016/frey_sortieren.html

Weber, Simon N., Weber, Christoph A., Frey, Erwin. Binary Mixtures of Particles with Different Diffusivities Demix. Physical Review Letters. 10.1103/PhysRevLett.116.058301

http://dx.doi.org/10.1103/PhysRevLett.116.058301