Sequential Self-Propelled Morphology Transitions of Nanoscale Condensates Diversify the Jumping-Droplet Condensation

Gao, Shan; Qu, Jian; Liu, Zhichun; Ma, Weigang

doi:10.2139/ssrn.4279520

Cited by 2 publications

(2 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Section: Variation #11: Nanodroplet Jumpingmentioning

confidence: 99%

Jumping droplets

Boreyko

2024

Droplet

View full text Add to dashboard Cite

When microdroplets with quasi‐spherical contact angles coalesce together on a low‐adhesion substrate, the capillary‐inertial expansion of the liquid bridge induces a dramatic out‐of‐plane jumping event due to symmetry breaking. From the onset of merging, droplet jumping initiates after a capillary‐inertial time scale of μs with characteristic jumping speeds of order m/s. This coalescence‐induced jumping‐droplet effect is most commonly observed among a population of growing dew droplets on a superhydrophobic condenser, but can also occur by colliding deposited droplets together or during droplet sliding on fog harvesters. In this review, we cover the historical development of capillary‐inertial jumping droplets, summarize the decade‐long effort to rationalize the ultra‐low energy conversion efficiency and critical droplet size of the phenomenon, and then present 15 variations on a theme of jumping. Capillary‐inertial jumping droplets are not only a visceral illustration of the surprising power of surface tension at the microscale but they also have the potential to enhance phase‐change heat transfer, enable self‐cleaning surfaces, combat frost formation, harvest energy, and govern the rate of disease spread for wheat crops.

show abstract

Section: Variation #11: Nanodroplet Jumpingmentioning

confidence: 99%

Jumping droplets

Boreyko

2024

Droplet

View full text Add to dashboard Cite

show abstract

“…The merging of adjacent droplets can realize the bouncing motion to improve the droplet transport distance. 38 In this work, a multibranch gradient groove surface is introduced to explore the long-distance continuous selftransport of mercury droplets by MD simulation. The merging and self-transport behavior of mercury droplets on the graphene-covered multibranch gradient groove surface (GMGGS) is investigated by analyzing the morphology of droplets and calculating the motion parameters.…”

Section: ■ Introductionmentioning

confidence: 99%

Long-Distance Continuous Self-Transport of a Droplet by Merging Droplets on a Graphene-Covered Multibranch Gradient Groove Surface

Gao,

Zhang,

Liu

et al. 2023

Langmuir

View full text Add to dashboard Cite

Although the self-transport of liquid droplets by a gradient-textured substrate can break away from the energy input, the long distance and even continuous spontaneous motion of droplets will be limited by the length in the surface-gradient direction. This article introduces a novel design with a monolayer graphene-covered multibranch gradient groove surface (GMGGS). The design aims to achieve long-distance, continuous self-transport of a mercury (Hg) droplet by merging with other mercury droplets, and the process is carried out using molecular dynamics (MD) simulation. This method achieves the merging of mercury droplets through the structure of multibranch gradient grooves, and we have observed that the merged mercury droplet can be reaccelerated in the gradient groove. The results demonstrate that droplet merging allows for control over the surface morphology variations of mercury droplets within the gradient groove. This creates a forward pressure difference, which leads to reacceleration of the mercury droplets. In light of this mechanism, the trunk droplet can achieve long-distance continuous self-transport on the GMGGS by continuously merging with branch droplets. These findings will broaden our comprehension of droplet merging and self-transport behavior, offering corresponding theoretical support for the long-distance continuous self-transport of droplets.

show abstract

Sequential Self-Propelled Morphology Transitions of Nanoscale Condensates Diversify the Jumping-Droplet Condensation

Cited by 2 publications

References 63 publications

Jumping droplets

Jumping droplets

Long-Distance Continuous Self-Transport of a Droplet by Merging Droplets on a Graphene-Covered Multibranch Gradient Groove Surface

Contact Info

Product

Resources

About