RT Journal Article T1 A horizontal Brazil-nut effect and its reverse A1 Schnautz, T. A1 Kruelle, C.A. A1 Rehberg, I. A1 Brito López, Ricardo AB Transport effects in a monolayer consisting of a binary granular mixture, confined in a horizontally vibrating circular dish, are studied experimentally and compared with a reduced theoretical model. Depending on the ratio of the particles' material density and size, migration of the larger particles occurs either towards the boundary or to the center of the circular container. These directed motions show similarities to the Brazil-nut effect and its reverse form. PB American Physical Society SN 0031-9007 YR 2005 FD 2005-07-08 LK https://hdl.handle.net/20.500.14352/50641 UL https://hdl.handle.net/20.500.14352/50641 LA eng NO © 2005 The American Physical Society. This collaboration was made possible by Deutsche Forschungsgemeinschaft through the GRK 698. R. B. acknowledges support by Secretaría de Estado de Educación y Universidades (Spain) and Project No. FIS2004-271. NO Deutsche Forschungsgemeinschaft NO Secretaría de Estado de Educación y Universidades (Spain) DS Docta Complutense RD 26 feb 2026