A method and apparatus for fractionation of a mixture of particles and for particle analysis are provided, in which LEAPS (“Light-controlled Electrokinetic Assembly of Particles near Surfaces”) is used to fractionate and analyze a plurality of particles suspended in an interface between an electrode...http://www.google.ca/patents/US7211183?utm_source=gb-gplus-sharePatent US7211183 - Analysis and fractionation of particles near surfaces
