Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Kinetic Friction01:26

Kinetic Friction

1.4K
Consider a truck trying to pull a stationary car. As the truck exerts a force on the car, static friction is created at the point of contact between the two surfaces. This frictional force resists the car's movement and keeps it at rest. However, when the applied force by the truck surpasses the limiting static frictional force, an interesting phenomenon occurs. The frictional force at the interface reduces to a lower value, known as the kinetic frictional force. At this point, the car...
1.4K
Types of Friction Problems01:27

Types of Friction Problems

971
Friction is an essential concept in physics, engineering, and everyday life. It is the force that opposes the relative motion or tendency of such motion between two surfaces in contact. One of the most common types of friction encountered in various applications is dry friction. Dry friction problems can be broadly categorized into three types, each with unique characteristics and challenges.
The first type of dry friction problem involves situations where there is no apparent impending motion....
971
Friction: Problem Solving01:21

Friction: Problem Solving

490
Friction is an essential force that influences the motion of objects in daily life. Depending on the situation, it can be either beneficial or problematic. Consider a bus with a mass of three megagrams and its center of mass at a specific point, moving along a banked road at a constant speed. The coefficient of static friction between the tires and the road is 0.5. Find the maximum angle of the banked road at which the bus would not slip or tip.
Initially, a visual representation of the...
490
Characteristics of Dry Friction01:21

Characteristics of Dry Friction

968
Dry friction occurs when two solid surfaces slide against each other without any lubrication or fluid present. It causes resistance when pushing objects along a surface, like a gardener pushing a wheelbarrow. The force applied to move the cart causes dry friction between the wheel and the ground.
Before the wheelbarrow starts moving, the static frictional force acts tangentially to the contact surface, opposing the force that is about to induce the motion. This frictional force prevents the...
968
Frictional Force01:07

Frictional Force

9.7K
When a body is in motion, it encounters resistance because the body interacts with its surroundings. This resistance is known as friction, a common yet complex force whose behavior is still not completely understood. Friction opposes relative motion between systems in contact, but also allows us to move. Friction arises in part due to the roughness of surfaces in contact. For one object to move along a surface, it must rise to where the peaks of the surface can skip along the bottom of the...
9.7K
Dry Friction01:30

Dry Friction

950
Dry friction occurs between two solid surfaces in contact as they attempt to move relative to one another. In daily life, dry friction is encountered in various forms, such as when walking on the ground, sliding an object across a table, or rubbing hands together. Despite its ubiquity, the underlying mechanisms behind dry friction are not readily visible.
To illustrate this concept, imagine a wooden crate resting on a rough, non-uniform horizontal surface. When an external force is applied to...
950

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The role of Marangoni flows in the fogging of pharmaceutical vials.

Journal of pharmaceutical sciences·2026
Same author

Ultra-quick dynamics and acrobatics of viscous marbles.

Nature communications·2026
Same author

Bimodal dynamics of viscous pearls.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

On the lifetime of a coffee drop.

Soft matter·2026
Same author

Temporal power of a cycling sprinter: experiments and effective time theory.

Proceedings. Biological sciences·2025
Same author

Hot liquid marbles.

Proceedings of the National Academy of Sciences of the United States of America·2025

Related Experiment Video

Updated: Jan 26, 2026

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

9.0K

Superhydrophobic frictions.

Timothée Mouterde1,2, Pascal S Raux1,2, Christophe Clanet1,2

  • 1Laboratoire d'Hydrodynamique, UMR 7646 du CNRS, École Polytechnique, 91128 Palaiseau Cedex, France.

Proceedings of the National Academy of Sciences of the United States of America
|April 7, 2019
PubMed
Summary
This summary is machine-generated.

Water moves exceptionally fast on superhydrophobic surfaces. This study reveals that aerodynamic resistance, not classical friction, dominates, explaining the enhanced mobility of water and other liquids on these advanced materials.

Keywords:
dissipationdropsfrictionsuperhydrophobicvelocity

More Related Videos

Determination of the Friction Coefficients of Icy Pavements Under Different Amounts of Snowfall
12:21

Determination of the Friction Coefficients of Icy Pavements Under Different Amounts of Snowfall

Published on: January 6, 2023

4.8K
Hydrogen Charging of Aluminum using Friction in Water
07:50

Hydrogen Charging of Aluminum using Friction in Water

Published on: January 28, 2020

6.5K

Related Experiment Videos

Last Updated: Jan 26, 2026

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

9.0K
Determination of the Friction Coefficients of Icy Pavements Under Different Amounts of Snowfall
12:21

Determination of the Friction Coefficients of Icy Pavements Under Different Amounts of Snowfall

Published on: January 6, 2023

4.8K
Hydrogen Charging of Aluminum using Friction in Water
07:50

Hydrogen Charging of Aluminum using Friction in Water

Published on: January 28, 2020

6.5K

Area of Science:

  • Materials Science
  • Fluid Dynamics
  • Surface Chemistry

Background:

  • Water exhibits sluggish behavior on conventional solids.
  • Superhydrophobic materials demonstrate exceptional water mobility, with drops accelerating continuously on tilted surfaces.
  • On longer substrates, drops reach a terminal velocity limited by friction, prompting investigation into the nature of this friction.

Purpose of the Study:

  • To investigate the friction dynamics governing liquid motion on superhydrophobic surfaces.
  • To elucidate the dominant factors contributing to the high mobility of liquids on these materials.
  • To extend findings to viscous liquids.

Main Methods:

  • Experimental observation of drop motion on superhydrophobic substrates.
  • Analysis of the relationship between applied force and terminal velocity.
  • Theoretical interpretation of friction mechanisms.

Main Results:

  • The relationship between force and terminal velocity for drops on superhydrophobic surfaces is nonlinear.
  • Classical friction sources are minimized on these surfaces.
  • Aerodynamic resistance becomes the dominant factor limiting drop velocity.

Conclusions:

  • The matchless mobility of water on superhydrophobic materials is explained by dominant aerodynamic resistance.
  • The findings apply to both water and other viscous liquids, highlighting their unusual speed on these surfaces.
  • Understanding these dynamics is key for designing advanced water-repellent technologies.