Effects of surface acoustic waves on droplet impact dynamics

Satpathi, Niladri Sekhar; Nampoothiri, Krishnadas Narayanan; Sen, A. K.

doi:10.1016/j.jcis.2023.03.058

Cited by 11 publications

(2 citation statements)

References 46 publications

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“…7,17 Physical changes on a surface are generally achieved through deliberate patterning of micro-and nanoscale roughness using multiple techniques including 3D printing, 18,19 reactive ion beam etching, 20,21 and laser ablation. 22,23 The apparent wettability of a surface can also be dynamically altered through the creative application of thermal gradients, 24 surface acoustic waves, 25 and electric fields. 26 In one example of physical alteration of surface wettability, Mohammad Karim et al created rough hydrophobic Teflon plates to examine the spreading dynamics of polyethylene glycol (PEG).…”

Section: ■ Introductionmentioning

confidence: 99%

“…Surface wettability is generally a function of chemical interactions between the fluid and the surface and of the physical properties (i.e., roughness) of the surface . Chemical properties of a surface can be controlled by a number of means including UV irradiation, plasma treatment, − molecular grafting, , and direct printing of functional materials. , Physical changes on a surface are generally achieved through deliberate patterning of micro- and nanoscale roughness using multiple techniques including 3D printing, , reactive ion beam etching, , and laser ablation. , The apparent wettability of a surface can also be dynamically altered through the creative application of thermal gradients, surface acoustic waves, and electric fields …”

Section: Introductionmentioning

confidence: 99%

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Characterization of Particle Transport and Deposition Due to Heterogeneous Dewetting on Low-Cost Inkjet-Printed Devices

Li,

Maki,

Schertzer

2023

Langmuir

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This work investigates the deposition patterns left by evaporating particle-laden droplets on heterogeneous surfaces with spatially varying wettability. Spatial differences in receding contact angles give rise to scalloped-shaped contact lines. During evaporation, the contact line recedes in one location and remains pinned in another. This nonuniform contact line recession results in particle self-assembly above areas where the contact line remains pinned but not where it recedes. This behavior is fairly robust across a variety of particle sizes, concentrations, and device geometries. We hypothesize that particle self-assembly in these cases is due to the competition between particle diffusion and evaporative-driven advective flow. Diffusion appears to be more pronounced in regions where the contact line recedes, while advection appears to be more pronounced near the pinned portion of the contact line. As such, particles appear to diffuse away from receding areas and toward pinned areas, where advection transports them to the contact line. The distribution of particle deposition above the pinned regions was influenced by the particle size and the concentration of particles in the droplet. Similar to homogeneous surfaces, deposition was more prevalent at the pinned portion of the contact line for smaller particles and lower concentrations and more uniformly distributed across the entire pinned region for larger particles and higher concentrations. A better understanding of this process may be beneficial in a wide variety of particle separation applications, such as printing, cell patterning, biosensing, and anti-icing.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of Particle Transport and Deposition Due to Heterogeneous Dewetting on Low-Cost Inkjet-Printed Devices

Li,

Maki,

Schertzer

2023

Langmuir

View full text Add to dashboard Cite

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Review on Icephobicity of Materials Surface Enhanced by Interface Action Force

Zhao,

Shen,

Tao

et al. 2024

Adv Materials Inter

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In response to the hazards of icing in the energy, transportation, and aerospace sectors, extensive research has been conducted on anti‐icing materials based on the solid‐liquid/ice interface theory, as well as reliable chemical and electro‐thermal de‐icing systems. However, there is an urgent need for modernizing anti‐icing systems to address diverse application scenarios. Gaining insights into the influence of interface action forces on water droplet behavior can proactively prevent detrimental icing occurrences. Nevertheless, under severe conditions where ice formation is inevitable, leveraging interface action forces to induce cracking and expansion of ice facilitates its rapid detachment despite potential challenges associated with complete removal. A comprehensive review elucidating the mechanisms through which interface action forces impact water/ice formations encompasses various approaches toward designing mechanically‐driven de‐icing systems.

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