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Related Concept Videos

Surface Tension, Capillary Action, and Viscosity02:57

Surface Tension, Capillary Action, and Viscosity

Surface Tension
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
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Surface Tension of Fluid

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Hydrostatic Pressure Force on a Curved Surface01:04

Hydrostatic Pressure Force on a Curved Surface

Hydrostatic pressure on curved surfaces is a fundamental concept in fluid mechanics with broad applications in the civil engineering field. When fluid is in contact with a curved surface, as in a reservoir, dam, or storage tank, it exerts pressure that varies in magnitude and direction along the curved surface. To assess the total hydrostatic force exerted by the fluid on a curved structure, engineers typically isolate the fluid volume adjacent to the surface and analyze the forces acting on...
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Solubility

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Related Experiment Video

Updated: Jun 7, 2026

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method
07:18

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method

Published on: June 14, 2019

Dynamical superhydrophobicity.

Mathilde Reyssat1, Denis Richard, Christophe Clanet

  • 1PMMH, ESPCI, 10 rue Vauquelin, 75005 Paris, France.

Faraday Discussions
|November 4, 2010
PubMed
Summary
This summary is machine-generated.

Superhydrophobic surfaces exhibit unique behaviors like low adhesion and water repellency. This study explores minimizing contact angle hysteresis and explains droplet dynamics, including free fall and impact rebounds.

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Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications
11:20

Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications

Published on: August 15, 2018

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Last Updated: Jun 7, 2026

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method
07:18

Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method

Published on: June 14, 2019

Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars
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Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications
11:20

Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications

Published on: August 15, 2018

Area of Science:

  • Physics
  • Materials Science
  • Surface Science

Background:

  • Superhydrophobicity is characterized by unique dynamic behaviors such as low adhesion, significant hydrodynamic slip, and elastic rebounds upon impact.
  • Understanding these properties is crucial for developing advanced materials and applications.

Purpose of the Study:

  • To discuss and elucidate the key dynamical behaviors associated with superhydrophobicity.
  • To explore methods for minimizing contact angle hysteresis in superhydrophobic states.
  • To analyze the dynamics of water droplet motion, including free fall and impact.

Main Methods:

  • Review of contact angle hysteresis minimization techniques.
  • Analysis of water droplet motion on inclined surfaces, comparing with Galilean free fall.
  • Investigation of stationary states and associated friction.
  • Characterization of water repellency and impact dynamics on superhydrophobic textures.

Main Results:

  • Contact angle hysteresis can be minimized for superhydrophobic states.
  • Water droplets exhibit Galilean free fall on inclines before reaching a stationary state with associated friction.
  • Superhydrophobic textures influence the scale and nature of impact rebounds, demonstrating water repellency.

Conclusions:

  • Superhydrophobicity enables remarkable dynamical phenomena, including low adhesion, slip, and rebounds.
  • The study provides insights into droplet dynamics and friction on superhydrophobic surfaces.
  • Surface texture plays a significant role in controlling impact behavior and water repellency.