Marangoni-induced reversal of meniscus-climbing microdroplets

Sun, Jianxing; Weisensee, Patricia B.

doi:10.1039/d2sm00979j

Cited by 4 publications

(2 citation statements)

References 54 publications

(89 reference statements)

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“…Additionally, in Figure 13B, the heavier fluid was enabled to float stably on top of the lighter fluid by applying vertical vibrations (Pototsky et al, 2019). This process involves bidirectional motion of droplets with varying volumes on the oil meniscus, driven by capillary action (Sun and Weisensee, 2023). This novel concept presents an innovative way to control the movement of the liquidliquid floating system.…”

Section: Contact On a Fluid Surfacementioning

confidence: 99%

Factors influencing wettability and surface/interface mechanics of plant surfaces: a review

Tie,

Gao,

Huang

et al. 2023

Front. Mater.

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A wide variety of abundant plant leaves exist in nature, and the wettability of their surfaces is formed to adapt to diverse external environments. In this paper we will focus on the factors influencing the wettability of various plant leaves prevalent in nature. And we hope to investigate the interfacial problems of plants from a mechanical point of view. It is found that there are many factors affecting the surface wettability of leaves, such as chemical composition, surface microstructures, hierarchical structures, and growth age. Different influencing factors have different contributions to the change of surface wettability. The surface wax composition influences the surface wettability from a chemical point of view while the hierarchical structure consisting of nanostructures and micron structures also influences the wettability from a structural point of view. Also as the growth age of the plant increases, there is a combined effect on the chemical composition and microstructure of the leaves. Then we discuss the surface/interface mechanics of droplets on various plant leaves and analyze the wetting properties of droplets on different substrates. Finally, we hope that the surface/interface mechanics of plant leaves may be systematically utilized in the future for the preparation of multifunctional biomimetic materials, realizing the crossover of chemistry, biology, mechanics, and other materials science fields.

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Section: Contact On a Fluid Surfacementioning

confidence: 99%

Factors influencing wettability and surface/interface mechanics of plant surfaces: a review

Tie,

Gao,

Huang

et al. 2023

Front. Mater.

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“…More recently, there is much interest in understanding droplet condensation on lubricated surfaces [10][11][12][13][14] for enhanced heat-transfer and water-collection applications [10,[15][16][17]. Water droplets are highly mobile on lubricated surfaces [18][19][20], because the presence of a stable lubricant film (typically silicone or fluorinated oils) prevents direct contact of the droplet with the underlying solid substrate and hence eliminates contact-line pinning [21,22].…”

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confidence: 99%

Emergent collective motion of self-propelled condensate droplets

Lin,

Kim,

Arunachalam

et al. 2023

Preprint

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Recently, there is much interest in droplet condensation on soft or liquid/liquid-like substrates. Droplets can deform soft and liquid interfaces resulting in a wealth of phenomena not observed on hard, solid surfaces (e.g., increased nucleation, inter-droplet attraction). Here, we describe a unique complex collective motion of condensate water droplets that emerges spontaneously when a solid substrate is covered with a thin oil film. Droplets move first in a serpentine, self-avoiding fashion before transitioning to circular motions. We show that this self-propulsion (with speeds in the 0.1–1 mm s−1 range) is fuelled by the interfacial energy release upon merging with newly condensed but much smaller droplets. The resultant collective motion spans multiple length scales from submillimetre to several centimetres, with potentially important heat-transfer and water-harvesting applications.

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