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Pinning Force in Active Media
2004
Physical Review Letters
Pinning of vortices by defects plays an important role in various physical (superconductivity, superfluidity, etc.) or biological (propagation in cardiac muscle) situations. Which defects act as pinning centers? We propose a way to study this general problem by using an advection field to quantify the attraction between an obstacle and a vortex. A full solution is obtained for the real Ginzburg-Landau equation (RGLE). Two pinning mechanisms are found in excitable media. Our results suggest
doi:10.1103/physrevlett.93.168303
pmid:15525042
fatcat:fr2ls4cvj5eejgvr623bv5qxpi