Droplet mobility on lubricant-impregnated surfaces

By J. D. Smith, R. Dhiman, S. Anand, Ernesto Reza-Garduno, R. Cohen, G. H. McKinley, K. Varanasi. 2013

739 citations recorded by the source corpus.

Non-wetting surfaces containing micro/nanotextures impregnated with lubricating liquids have recently been shown to exhibit superior non-wetting performance compared to superhydrophobic surfaces that rely on stable air–liquid interfaces. Here we examine the fundamental physico-chemical hydrodynamics that arise when droplets, immiscible with the lubricant, are placed on and allowed to move along these surfaces. We find that these four-phase systems show novel contact line morphology comprising a finite annular ridge of the lubricant pulled above the surface texture and consequently as many as three distinct 3-phase contact lines. We show that these distinct morphologies not only govern the contact line pinning that controls droplets' initial resistance to movement but also the level of viscous dissipation and hence their sliding velocity once the droplets begin to move.

Subfields: Computational Mechanics, Mechanics of Materials, Surfaces, Coatings and Films

View Paper: https://www.semanticscholar.org/paper/34577dd3f8fb82f7491dfa0bd885ae0ba62cf44e

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Computational Mechanics

1. Yanlin Song
2. Lei Jiang
3. Jianyong Lv
4. Jianjun Wang

In Mechanics of Materials

1. Yanlin Song
2. Lei Jiang
3. Jianyong Lv
4. Jianjun Wang
5. Kesong Liu

In Surfaces, Coatings and Films

1. Lei Jiang
2. Yanlin Song
3. Jianyong Lv
4. Jianjun Wang
5. Bharat Bhushan
6. Kesong Liu
7. Zhiguang Guo
8. Shutao Wang

Citations in the corpus

• Design of anti-icing surfaces: smooth, textured or slippery? (2016, neutral): “Whereas droplet motion on SLIPS is typically slower than on SHS due to viscous dissipation in the lubricant 94 , the stability of the lubricant film under high droplet impact pressures 26,95 and their high humidity tolerance 26 may make SLIPS a viable alternative to SHS in some scenarios.”
• Bio-inspired strategies for anti-icing. (2014, background): “found that external forces such as gravity could drain the excess liquid to attain a thermodynamically stable configuration of the surface.(113,114)”