Ruben Gerardo Barrera

Rubén Gerardo Barrera y Pérez (born 3 February 1943) is a Mexican physicist, professor, and researcher. He is currently professor emeritus at the National Autonomous University of Mexico (UNAM). His area of specialty is condensed matter physics, and his main interest has been the optical properties of inhomogeneous systems. His recent work has focused on colloidal systems.