1.
Phys Rev E Stat Nonlin Soft Matter Phys
; 83(3 Pt 2): 037601, 2011 Mar.
Artículo
en Inglés
| MEDLINE
| ID: mdl-21517634
RESUMEN
One-way or unidirectional coupling is a striking example of how topological considerations--the parity of an array of multistable elements combined with periodic boundary conditions--can qualitatively influence dynamics. Here we introduce a simple electronic model of one-way coupling in one and two dimensions and experimentally compare it to an improved mechanical model and an ideal mathematical model. In two dimensions, computation and experiment reveal richer one-way coupling phenomenology: in media where two-way coupling would dissipate all excitations, one-way coupling enables solitonlike waves to propagate in different directions with different speeds.