English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

Rheological measurements of model colloidal gels reveal that large variationsin the shear moduli as colloidal volume-fraction changes are not reflected bysimple structural parameters such as the coordination number, which remainsalmost a constant. We resolve this apparent contradiction by conducting anormal mode analysis of experimentally measured bond networks of the gels. Wefind that structural heterogeneity of the gels, which leads to floppy modes anda nonaffine-affine crossover as frequency increases, evolves as a function ofthe volume fraction and is key to understand the frequency dependentelasticity. Without any free parameters, we achieve good qualitative agreementwith the measured mechanical response. Furthermore, we achieve universalcollapse of the shear moduli through a phenomenological spring-dashpot modelthat accounts for the interplay between fluid viscosity, particle dissipation,and contributions from the affine and non-affine network deformation.

Elasticity of colloidal gels: structural heterogeneity, foppy modes, and rigidity