The behavior of capillary suspensions at diverse length scales: From single capillary bridges to bulk

Liquid-liquid-solid systems are becoming increasingly common in everyday life with many possible applications. Here, we focus on a special case of such liquid-liquid-solid systems, namely, capillary suspensions. These capillary suspensions originate from particles that form a network based on capill...

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Bibliographic Details
Published in:Current opinion in colloid & interface science 2022-04, Vol.58, p.101557, Article 101557
Main Authors: Bindgen, Sebastian, Allard, Jens, Koos, Erin
Format: Article
Language:English
Subjects:
Capillary force
Capillary suspensions
Dynamic wetting
Graph theory
Particle networks
Rheology
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Summary:Liquid-liquid-solid systems are becoming increasingly common in everyday life with many possible applications. Here, we focus on a special case of such liquid-liquid-solid systems, namely, capillary suspensions. These capillary suspensions originate from particles that form a network based on capillary forces and are typically composed of solids in a bulk liquid with an added secondary liquid. The structure of particle networks based on capillary bridges possesses unique properties compared with networks formed via other attractive interactions where these differences are inherently related to the properties of the capillary bridges, such as bridge breaking and coalescence between adjacent bridges. Thus, to tailor the mechanical properties of capillary suspensions to specific requirements, it is important to understand the influences on different length scales ranging from the dynamics of the bridges with varying external stimuli to the often heterogeneous network structure. [Display omitted]
ISSN:1359-0294
1879-0399
DOI:10.1016/j.cocis.2021.101557