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

Design Example: Deciding Thickness of Lubricating Fluid in a Shaft01:23

Design Example: Deciding Thickness of Lubricating Fluid in a Shaft

132
Effective lubrication between a rotating shaft and its bearing housing is essential in rotating machinery to minimize friction, wear, and energy loss. With carefully controlled thickness and viscosity, the lubricant layer prevents metal-to-metal contact, ensuring smooth operation.
To calculate the required thickness of the lubricant layer, the tangential velocity at the shaft's surface must first be determined. This velocity is calculated by converting the rotational speed to angular...
132
Dry Friction01:30

Dry Friction

419
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...
419
Characteristics of Dry Friction01:21

Characteristics of Dry Friction

617
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...
617
Journal Bearings01:23

Journal Bearings

703
Journal bearings are mechanical components that support and provide lateral stability to rotating shafts and axles. They are crucial in reducing friction, wear, and vibration in machinery such as engines, turbines, and pumps. The principle behind journal bearings is forming a thin lubricant film between the bearing surface and the rotating shaft, which minimizes direct contact and reduces frictional forces.
To better understand the concept of journal bearings, consider a rope winch with dry or...
703
Frictional Force01:07

Frictional Force

8.1K
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...
8.1K
Types of Friction Problems01:27

Types of Friction Problems

567
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....
567

You might also read

Related Articles

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

Sort by
Same author

Monolithic additive manufacturing of a fluid-structure coupled architected cellular mechanical system for rate-adaptive enhanced energy dissipation.

Materials horizons·2026
Same author

Lifting Efficiency of Barbed Sutures for Potential Face Lifting Application: A Parametric Analysis.

Journal of cosmetic dermatology·2026
Same author

Multi-Objective Optimization of Dental Implant Designs With Multi-Recessed Holes: Insights From Static and Dynamic Finite Element Analysis.

International journal for numerical methods in biomedical engineering·2025
Same author

Proof-of-Concept Digital-Physical Workflow for Clear Aligner Manufacturing.

Dentistry journal·2025
Same author

Correction: Design evaluation of automatic bearing offset adjustment for marine propeller shaft.

Scientific reports·2025
Same author

Design evaluation of automatic bearing offset adjustment for marine propeller shaft.

Scientific reports·2025

Related Experiment Video

Updated: Jul 21, 2025

Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel
10:52

Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel

Published on: March 29, 2018

7.6K

Superlubricity of Materials: Progress, Potential, and Challenges.

Maziar Ramezani1, Zaidi Mohd Ripin2, Cho-Pei Jiang3

  • 1Department of Mechanical Engineering, Auckland University of Technology, Auckland 1010, New Zealand.

Materials (Basel, Switzerland)
|July 29, 2023
PubMed
Summary

Superlubricity, near-zero friction, enhances mechanical efficiency. This review covers materials, methods, applications, challenges, and future directions for superlubricity.

Keywords:
friction reductionnanoscale and macroscale techniquessuperlubric materialssuperlubricity

More Related Videos

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

12.6K
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

14.1K

Related Experiment Videos

Last Updated: Jul 21, 2025

Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel
10:52

Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel

Published on: March 29, 2018

7.6K
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

12.6K
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

14.1K

Area of Science:

  • Materials Science
  • Tribology
  • Nanotechnology

Background:

  • Superlubricity, characterized by near-zero friction, offers significant potential for improving mechanical system efficiency.
  • This phenomenon has garnered substantial interest from both academic and industrial sectors.

Purpose of the Study:

  • To provide a comprehensive review of superlubricity.
  • To explore its material characteristics, methods of achievement, applications, and challenges.

Main Methods:

  • Literature review of superlubricity.
  • Analysis of atomic/molecular structures enabling superlubricity.
  • Discussion of superlubric materials (e.g., graphite, diamond-like carbon, composites).

Main Results:

  • Identified key superlubric materials and structures.
  • Elaborated on methods for achieving superlubricity at nanoscale and macroscale.
  • Highlighted environmental influences on superlubricity.
  • Discussed diverse applications from mechanical systems to biomedical fields.

Conclusions:

  • Superlubricity presents promising applications but faces challenges in achievement, maintenance, and industrial scaling.
  • Sustainability concerns and potential solutions are addressed.
  • Future research directions and technological innovations are outlined.