Stabilizing spatiotemporal patterns in a convectively unstable open flow system via kink-antikink pairs

A variety of spatial patterns embedded within an underlying spatiotemporally chaotic state is stabilized via various methods of boundary control. Results are presented for an experimental system consisting of unidirectionally coupled diode resonator circuits as well as for a coupled map lattice. Spatiotemporal chaos is eliminated either by locking the first resonator onto selected temporal periods or by utilizing periodic boundary conditions. We give experimental evidence that the resulting stable waveforms are related to moving phase-kink-antikink pairs.