engleski

Generation of ribbons, helicoids, and complex Scherk surfaces in laser-matter interactions

Motivated by a diversity of the shape instability phenomena in condensed matter physics, we studied 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.

flow Instabilities ; micro-and nano-scale flow phenomena ; membranes ; rods and strings

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