Matuszewski, MichalKrolikowski, WieslawKivshar, Yuri2015-12-102080-2242http://hdl.handle.net/1885/52680We study nonlinear light propagation in colloidal suspensions of dielectric nanoparticles within the hard-sphere interaction approximation. We analyze the existence and properties of self-trapped beams (spatial optical solitons) in such media and demonstrate the existence of a bistability regime in the one-dimensional case. We find however that the lower stable branch disappears in the two-dimensional model.Keywords: Bi-stability; Bistable solitons; Colloidal suspensions; Dielectric nanoparticles; Hard-sphere; Self-trapped beams; Spatial optical solitons; Two dimensional model; Light propagation; Optical properties; Solitons; Suspensions (fluids)20092016-02-24