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Motivated by a diversity of the shape instability phenomena in condensed matter physics, we study formation of elastic ribbon structures and transformation into helicoidal structures. Using the multi-...pulse laser-matter interaction with the Co-coated surface, a one-dimensional high-density vortex filament array has been created. Increasing the number of pulses, the oscillatory strain field causes the cascade of the shape transformations into structures of increasing topological complexity: vortex filaments into ribbons, into ribbon-helicoids and tubular-ribbon-helicoids, and then into short ribbon-structures with the complex Scherk surface being identified. Above a critical number of pulses, the system is catastrophically disintegrated into small-scale wrinkled and crumpled surfaces.続きを見る
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