Elastic stresses reverse Ostwald ripening

Soft Matter
Kathryn A RosowskiEric R Dufresne

Abstract

When liquid droplets nucleate and grow in a polymer network, compressive stresses can significantly increase their internal pressure, reaching values that far exceed the Laplace pressure. When droplets have grown in a polymer network with a stiffness gradient, droplets in relatively stiff regions of the network tend to dissolve, favoring growth of droplets in softer regions. Here, we show that this elastic ripening can be strong enough to reverse the direction of Ostwald ripening: large droplets can shrink to feed the growth of smaller ones. To numerically model these experiments, we generalize the theory of elastic ripening to account for gradients in solubility alongside gradients in mechanical stiffness.

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Citations

Jul 28, 2020·Polymers·Biswaroop Mukherjee, Buddhapriya Chakrabarti
Oct 14, 2020·Emerging Topics in Life Sciences·Tina Wiegand, Anthony A Hyman
Jan 16, 2021·Physical Review Letters·Xuefeng WeiFanlong Meng
Jul 10, 2021·Physical Review Letters·Yaojun ZhangNed S Wingreen
Aug 14, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Monicka Kullappan, Manoj K Chaudhury
Sep 4, 2021·PLoS Computational Biology·Mathieu Le Verge-Serandour, Hervé Turlier
Oct 1, 2021·Proceedings of the National Academy of Sciences of the United States of America·Estefania Vidal-Henriquez, David Zwicker
Oct 12, 2021·International Journal of Biological Macromolecules·Xiaojun WuJunjie Li

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