Journal ArticleDOI
Capillarity-driven migration of small objects: A critical review.
Jianlin Liu,Shanpeng Li +1 more
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TLDR
A critical review of the phenomena on the capillarity-driven migration of small objects is presented, and these behaviors may cast new light on the design of microfluidics and new devices, environment cleaning, oil and gas displacement and mineral industries.Abstract:
The phenomena on the capillarity-driven migration of small objects are full of interest for both scientific and engineering communities, and a critical review is thereby presented. The small objects mentioned here deal with the non-deformable objects, such as particles, rods, disks and metal sheets; and besides them, the soft objects are considered, such as droplets and bubbles. Two types of interfaces are analyzed, i.e., the solid-fluid interface and the fluid-fluid interface. Due to the easily deformable properties of the soft objects and distorted interfacial shapes induced by small objects, a more convenient way to obtain the driving force is through the potential energy of the system. The asymmetric factors causing the object migration include the asymmetric configuration of the interface, and the difference between the interfacial tensions. Finally, a simple outlook on the potential applications of small object migration is made. These behaviors may cast new light on the design of microfluidics and new devices, environment cleaning, oil and gas displacement and mineral industries.read more
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Contributions of Rock Mass Structure to the Emplacement of Fragmenting Rockfalls and Rockslides: Insights From Laboratory Experiments
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Mini-Generator of Electrical Power Exploiting the Marangoni Flow Inspired Self-Propulsion
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Trapping energy of a spherical particle on a curved liquid interface
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TL;DR: The single-particle trapping energy is found to decrease with the square of both the total curvature c1+c2 and the anisotropy c1-c2, and the resulting lateral force pushes particles toward more strongly curved regions.
References
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TL;DR: The manipulation of fluids in channels with dimensions of tens of micrometres — microfluidics — has emerged as a distinct new field that has the potential to influence subject areas from chemical synthesis and biological analysis to optics and information technology.
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Purity of the sacred lotus, or escape from contamination in biological surfaces
TL;DR: It is shown here for the first time that the interdependence between surface roughness, reduced particle adhesion and water repellency is the keystone in the self-cleaning mechanism of many biological surfaces.
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The present and future role of microfluidics in biomedical research
TL;DR: The progress made by lab-on-a-chip microtechnologies in recent years is analyzed, and the clinical and research areas in which they have made the greatest impact are discussed.