In an experiment of oscillatory media, domains and walls are formed under the parametric resonance with a frequency double the natural one. In this bi-stable system, %phase jumps π by crossing walls. a nonequilibrium transition from Ising wall to Bloch wall consistent with prediction is confirmed experimentally. The Bloch wall moves in the direction determined by its chirality with a constant speed. As a new type of moving structure in two-dimension, a traveling loop consisting of two walls and Neel points is observed.
@article{arxiv.patt-sol/9502004,
title = {Points, Walls and Loops in Resonant Oscillatory Media},
author = {Tetsuya Kawagishi and Tsuyoshi Mizuguchi and Masaki Sano},
journal= {arXiv preprint arXiv:patt-sol/9502004},
year = {2009}
}
Comments
9 pages (revtex format) and 6 figures (PostScript)