It was noted that moving extended defects experienced, via continuous energy exchange with the host material, a viscous friction force which (depending upon the nature of the exchange) could lead to unexpected acceleration effects. These occurred at well-defined velocity thresholds where they implied phase-transition like dynamic instabilities of the defect morphology. The apparently universal nature of these phenomena was used to represent them by the simple scenario of a moving domain boundary which was coupled to a Ginzburg-Landau field of the bulk material.

Morphological Instabilities of Moving Extended Defects. L.Korzhenevskii, R.Bausch, R.Schmitz: Europhysics Letters, 2002, 59[4], 533-9