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Diffusiophoresis-enhanced Turing patterns
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DOI：10.1126/sciadv.adj2457.png)
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摘要
En 中文
Turing patterns are fundamental in biophysics, emerging from short-range activation and long-range inhibition processes. However, their paradigm is based on diffusive transport processes that yield patterns with shallower gradients than those observed in nature. A complete physical description of this discrepancy remains unknown. We propose a solution to this phenomenon by investigating the role of diffusiophoresis, which is the propulsion of colloids by a chemical gradient, in Turing patterns. Diffusiophoresis enables robust patterning of colloidal particles with substantially finer length scales than the accompanying chemical Turing patterns. A scaling analysis and a comparison to recent experiments indicate that chromatophores, ubiquitous in biological pattern formation, are likely diffusiophoretic and the colloidal Peclet number controls the pattern enhancement. This discovery suggests that important features of biological pattern formation can be explained with a universal mechanism that is quantified straightforwardly from the fundamental physics of colloids.
Keyword:
LONG-RANGE
DIFFUSION
TRANSPORT
GRADIENTS
COLLOIDS
DRIVEN
STRIPE
MODEL
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IF:
12.5
论文数:
2.1W
被引数:
18.1W
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