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

493
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...
493
Frictional Force01:07

Frictional Force

7.8K
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...
7.8K
Dry Friction01:30

Dry Friction

348
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...
348
Rolling Resistance01:21

Rolling Resistance

274
When a solid cylinder rolls steadily on a rigid surface, the normal force applied by the surface on the cylinder is perpendicular to the tangent at the contact point. However, since no materials are entirely rigid, the surface's reaction to the cylinder involves a range of normal pressures.
For instance, imagine a hard cylinder rolling on a comparatively soft surface. The cylinder's weight compresses the surface beneath it. As the cylinder moves, the material in front of it slows down...
274
Friction: Problem Solving01:21

Friction: Problem Solving

203
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...
203
Rolling Resistance: Problem Solving01:17

Rolling Resistance: Problem Solving

299
Rolling resistance, also known as rolling friction, is the force that resists the motion of a rolling object, such as a wheel, tire, or ball, when it moves over a surface. It is caused by the deformation of the object and the surface in contact with each other, as well as other factors like internal friction, hysteresis, and energy losses within the materials. Rolling resistance opposes the object's motion, requiring additional energy to overcome it and maintain movement. In practical...
299
  1. Home
  3. Research Domains
  5. Engineering
  7. Materials Engineering
  9. Wearable Materials
  11. Reversible And Controllable Reduction In Friction Of Atomically Thin Two-dimensional Materials Through High-stress Pre-rubbing

Reversible and controllable reduction in friction of atomically thin two-dimensional materials through high-stress pre-rubbing

Haoyang Su1, Honglin Zhang2, Junhui Sun2

  • 1College of Mechanical Engineering, Donghua University, Shanghai, 201620, China.

Nature Communications
|November 15, 2024

Related Experiment 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

14.0K
Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer
09:21

Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer

Published on: September 28, 2015

12.5K
The Role of Fabric in Frictional Properties of Phyllosilicate-Rich Tectonic Faults
07:39

The Role of Fabric in Frictional Properties of Phyllosilicate-Rich Tectonic Faults

Published on: November 6, 2021

3.1K

View abstract on PubMed

Summary
This summary is machine-generated.

Researchers reduced graphene friction by six times using high-stress pre-rubbing, creating patterned lubricating features. This friction reduction is reversible and linked to enhanced graphene-substrate adhesion, offering a practical method for 2D material optimization.

Area of Science:

  • Materials Science
  • Tribology
  • Nanotechnology

Background:

  • Atomically thin two-dimensional (2D) materials possess exceptional tribological properties and mechanical strength, making them promising solid lubricants.
  • Reducing friction in 2D materials is crucial for advancing their applications in lubrication and nanotechnology.

Purpose of the Study:

  • To investigate methods for controllably reducing the friction of atomically thin graphene.
  • To explore the underlying mechanisms responsible for friction reduction in graphene.
  • To demonstrate the potential for patterning lubricating features on graphene surfaces.

Main Methods:

  • Controlled pre-rubbing of atomically thin graphene under high stress.
  • Reversal of friction reduction using reciprocating friction under moderate stress.

Related Experiment 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

14.0K
Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer
09:21

Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer

Published on: September 28, 2015

12.5K
The Role of Fabric in Frictional Properties of Phyllosilicate-Rich Tectonic Faults
07:39

The Role of Fabric in Frictional Properties of Phyllosilicate-Rich Tectonic Faults

Published on: November 6, 2021

3.1K
  • Density functional theory (DFT) calculations to analyze interfacial properties.

    • Main Results:

    • Friction coefficient of graphene was reduced by up to a factor of six compared to pristine graphene.
    • Friction reduction was reversible through controlled friction application.
    • High-stress pre-rubbing enabled the creation of patterned lubricating features on graphene.
    • DFT calculations revealed decreased sliding potential barrier and increased contact stiffness due to enhanced graphene-substrate adhesion via interfacial charge transfer.

    Conclusions:

    • High-stress pre-rubbing offers a practical and controllable method to significantly reduce graphene friction.
    • The observed friction reduction is attributed to enhanced interfacial adhesion and modified mechanical properties.
    • This technique provides a pathway for optimizing the tribological performance of 2D materials for various applications.