scholarly journals Squeezing lubrication films: Layering transition for curved solid surfaces with long-range elasticity

2000 ◽  
Vol 112 (21) ◽  
pp. 9524-9542 ◽  
Author(s):  
B. N. J. Persson ◽  
P. Ballone
Keyword(s):  
Long Range ◽  
Solid Surfaces ◽  
Layering Transition

Electret mechanism of the long-range effect of solid surfaces

1969 ◽  
Vol 56 (6) ◽  
pp. 325-325 ◽  
Author(s):  
G. I. Distler ◽  
S. A. Kobzareva
Keyword(s):  
Long Range ◽  
Solid Surfaces ◽  
Range Effect

scholarly journals Spreading of non volatile liquids on smooth solid surfaces : role of long range forces

1988 ◽  
Vol 23 (6) ◽  
pp. 1047-1054 ◽  
Author(s):  
L. Léger ◽  
M. Erman ◽  
A.M. Guinet-Picart ◽  
D. Ausserre ◽  
C. Strazielle ◽  
...  
Keyword(s):  
Long Range ◽  
Solid Surfaces ◽  
Volatile Liquids

scholarly journals Counterintuitive Ballistic and Directional Liquid Transport on a Flexible Droplet Rectifier

Research ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Lei Wang ◽  
Jing Li ◽  
Bo Zhang ◽  
Shile Feng ◽  
Mei Zhang ◽  
...  
Keyword(s):  
Long Range ◽  
Solid Surfaces ◽  
Liquid Transport ◽  
New Approach ◽  
Practical Applications ◽  
Global Migration ◽  
Transport Distance ◽  
Droplet Transport ◽  
Structural Periodicity ◽  
Very High

Achieving the directional and long-range droplet transport on solid surfaces is widely preferred for many practical applications but has proven to be challenging. Particularly, directionality and transport distance of droplets on hydrophobic surfaces are mutually exclusive. Here, we report that drain fly, a ubiquitous insect maintaining nonwetting property even in very high humidity, develops a unique ballistic droplet transport mechanism to meet these demanding challenges. The drain fly serves as a flexible rectifier to allow for a directional and long-range propagation as well as self-removal of a droplet, thus suppressing unwanted liquid flooding. Further investigation reveals that this phenomenon is owing to the synergistic conjunction of multiscale roughness, structural periodicity, and flexibility, which rectifies the random and localized droplet nucleation (nanoscale and microscale) into a directed and global migration (millimeter-scale). The mechanism we have identified opens up a new approach toward the design of artificial rectifiers for broad applications.

Very Long-range Structuring of Liquids, including Water, at Solid Surfaces

Nature ◽  
1968 ◽  
Vol 219 (5159) ◽  
pp. 1151-1152 ◽  
Author(s):  
A. D. BANGHAM ◽  
D. R. BANGHAM
Keyword(s):  
Long Range ◽  
Solid Surfaces

Adsorption of water vapour on solid surfaces

1951 ◽  
Vol 209 (1098) ◽  
pp. 297-308 ◽  
Keyword(s):  
Experimental Study ◽  
Water Vapour ◽  
Long Range ◽  
Polarized Light ◽  
Surface Effects ◽  
Solid Surfaces ◽  
Adsorbed Film ◽  
Adsorption Of Water ◽  
Molecular Layers

An experimental study has been made of the adsorption of water vapour on solid surfaces. Two methods are used, the first a direct weighing of the adsorbed film on a microbalance and the second an examination of polarized light reflected from the surface. Both methods agree and show that, for the surfaces examined, the adsorption of water at vapour pressures near saturation corresponds only to about two molecular layers. The experiments suggest that the heavy adsorption, which has been previously observed and which has been quoted as evidence for long-range surface effects, is due to contamination.

scholarly journals Tip-induced flipping of droplets on Janus pillars: From local reconfiguration to global transport

2020 ◽  
Vol 6 (28) ◽  
pp. eabb4540 ◽  
Author(s):  
Shile Feng ◽  
Joachim Delannoy ◽  
Antoine Malod ◽  
Huanxi Zheng ◽  
David Quéré ◽  
...  
Keyword(s):  
Long Range ◽  
Wide Spectrum ◽  
Solid Surfaces ◽  
Water Repellent ◽  
Local Geometry ◽  
Original Design ◽  
Synthetic Materials ◽  
Global Transport ◽  
Elastic Forces ◽  
Original Phenomenon

Despite their simplicity, water droplets manifest a wide spectrum of forms and dynamics, which can be actuated using special texture at solid surfaces to achieve desired functions. Along this vein, natural or synthetic materials can be rendered water repellent, oleophobic, antifogging, anisotropic, etc.—all properties arising from an original design of the substrate and/or from the use of special materials promoting capillary or elastic forces at the droplet scale. Here, we report an original phenomenon occurring at the tip of asymmetric (half-flat, half-curved) pillars: Droplets reconfigure and get oriented on the curved side of these Janus tips. This local, geometry-driven effect, namely, tip-induced flipping of droplets, is found to be generic and have spectacular global consequences: Vast assemblies of Janus pillars enable a continuous, long-range, and fast self-transport of water harvested from fogs, which makes it possible to collect and concentrate droplets at different scales.

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