The hidden hierarchical nature of soft particulate gels
The hidden hierarchical nature of soft particulate gels
复制标题
软颗粒凝胶隐藏的分层性质
DOI:
10.1038/s41567-023-01988-7
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发表时间:
2023
期刊:
影响因子:
19.6
通讯作者:
Del Gado, Emanuela
中科院分区:
文献类型:
--
作者:
Bantawa, Minaspi;Keshavarz, Bavand;Geri, Michela;Bouzid, Mehdi;Divoux, Thibaut;McKinley, Gareth H.;Del Gado, Emanuela
Soft particulate gels are composed of a small amount of particulate matter dispersed in a continuous fluid phase. The solid components assemble to form a porous matrix, providing rigidity and control of the mechanical response, despite being the minority constituent. The rheological response and gel elasticity are direct functions of the particle volume fraction. However, the diverse range of different functional dependencies reported experimentally has challenged efforts to identify general scaling laws. Here we reveal a hidden hierarchical organization of fractal elements that controls the viscoelastic spectrum, and which is associated with the spatial heterogeneity of the solid matrix topology. The fractal elements form the foundations of a viscoelastic master curve, constructed using large-scale three-dimensional (3D) microscopic simulations of model gels, which can be described by a recursive rheological ladder model over a range of particle volume fractions and gelation rates. The hierarchy of the fractal elements provides the missing general framework required to predict the gel elasticity and the linear viscoelastic response of these complex materials.
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DOI:
10.1073/pnas.2022339118
发表时间:
2021
期刊:
Proceedings of the National Academy of Sciences
影响因子:
--
作者:
B. Keshavarz;Donatien Gomes Rodrigues;J. Champenois;Matthew G. Frith;J. Ilavsky;M. Geri;T. Divoux;G. McKinley;A. Poulesquen
通讯作者:
A. Poulesquen
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
J. Yanez;T. Shikata;F. Lange;D. S. Pearson
通讯作者:
D. S. Pearson
影响因子:
4.4
作者:
Laurati, M.;Petekidis, G.;Egelhaaf, S. U.
通讯作者:
Egelhaaf, S. U.
影响因子:
16.6
作者:
Kathryn A. Whitaker;Z. Varga;L. Hsiao;M. Solomon;J. Swan;E. Furst
通讯作者:
E. Furst
影响因子:
13.6
作者:
Tsurusawa, Hideyo;Leocmach, Mathieu;Tanaka, Hajime
通讯作者:
Tanaka, Hajime