Wavy leaves may not depend only on their genes to make their edges crinkle.
Abstract
The edge of a torn plastic sheet forms a complex three-dimensional fractal shape. We have found that the shape results from a simple elongation of the sheet in the direction along its edge. Natural growth processes in some leaves, flowers and vesicles could lead to a similar elongation and hence to the generation of characteristic wavy shapes.
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Sharon, E., Roman, B., Marder, M. et al. Buckling cascades in free sheets. Nature 419, 579 (2002). https://doi.org/10.1038/419579a
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DOI: https://doi.org/10.1038/419579a
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