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

Characteristics of Dry Friction01:21

Characteristics of Dry Friction

1.1K
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...
1.1K
Types of Friction Problems01:27

Types of Friction Problems

1.0K
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....
1.0K
Frictional Force01:07

Frictional Force

10.5K
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...
10.5K
Dry Friction01:30

Dry Friction

1.1K
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...
1.1K
Contact Angle01:13

Contact Angle

27.8K
When a solid is dipped inside a liquid, the liquid surface becomes curved near the contact. For some solid–liquid interfaces, the liquid is pulled up along the solid, while for others, the liquid surface is convex or depressed near the solid surface. This phenomenon can be explained using the concept of cohesive and adhesive forces.
The adhesive force is the molecular force between molecules of different materials, that is, between the molecules of the solid and the liquid. The cohesive...
27.8K
Static Friction01:18

Static Friction

1.6K
Static friction is a force that opposes the relative motion or tendency of motion between two surfaces in contact. It plays a crucial role in our daily lives, from walking on the ground to driving a car.
For example, consider a scenario where a truck is connected to a car by a rope, ready to tow it along a road. When no external force is applied by the truck, the car remains stationary and is said to be in static equilibrium. In this case, the forces acting on the car, such as gravity and the...
1.6K

You might also read

Related Articles

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

Sort by
Same author

A Super-Adhesive Air Filter With Capillarity-Mediated Spontaneous Particle Absorption via Dynamic Bond Exchange.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Multi-layered marble for hydrogel encapsulation.

Nature communications·2026
Same author

Transparent and airtight silica nano- and microchannels with uniform tubular cross-section.

Soft matter·2026
Same author

Silica Sol-Gel Coatings for Solar Panels: Drop Friction and Particle Adhesion.

ACS applied materials & interfaces·2026
Same author

Stood-up drop to determine receding contact angles.

Soft matter·2025
Same author

Metal Nanodot Array via Thin Oil Layer-Assisted Dropwise Solid-State Dewetting.

Small science·2025

Related Experiment Video

Updated: Mar 21, 2026

Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures
07:23

Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures

Published on: November 14, 2025

533

Silicone Brushes: Omniphobic Surfaces with Low Sliding Angles.

Sanghyuk Wooh1, Doris Vollmer2

  • 1Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.

Angewandte Chemie (International Ed. in English)
|May 10, 2016
PubMed
Summary

Researchers developed omniphobic surfaces using acid-catalyzed graft polycondensation of dimethyldimethoxysilane (PDMS). These surfaces exhibit low contact angle hysteresis and sliding angles, offering a novel method for creating super-liquid-repelling materials.

Keywords:
contact angle hysteresisliquid-like surfacesomniphobic surfacespolydimethylsiloxane brushessuperhydrophobicity

More Related Videos

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes
13:57

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes

Published on: December 24, 2014

14.4K
Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars
08:02

Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars

Published on: February 11, 2020

9.5K

Related Experiment Videos

Last Updated: Mar 21, 2026

Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures
07:23

Light-induced Patterning and Grafting for Slippery Surfaces based on Silane-coated Nanoporous Structures

Published on: November 14, 2025

533
Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes
13:57

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes

Published on: December 24, 2014

14.4K
Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars
08:02

Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars

Published on: February 11, 2020

9.5K

Area of Science:

  • Materials Science
  • Surface Chemistry

Background:

  • Developing surfaces that repel liquids is crucial for various applications.
  • Existing methods often face challenges with durability and ease of production.

Purpose of the Study:

  • To create highly effective omniphobic surfaces.
  • To investigate a novel and robust method for producing super-liquid-repelling materials.

Main Methods:

  • Acid-catalyzed graft polycondensation of dimethyldimethoxysilane (PDMS).
  • Characterization of surface properties including contact angle hysteresis and sliding angles.

Main Results:

  • Successfully produced omniphobic surfaces with low contact angle hysteresis.
  • Achieved very low droplet sliding angles, indicating excellent liquid repellency.
  • Demonstrated the durability of the nm-thick PDMS layer, showing resistance to washing and depletion.

Conclusions:

  • Acid-catalyzed graft polycondensation of PDMS is an effective method for creating durable omniphobic surfaces.
  • The developed surfaces exhibit superior super-liquid-repelling properties.
  • This approach presents a novel pathway for fabricating advanced liquid-repellent materials.