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Related Concept Videos

Frictional Force01:07

Frictional Force

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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...
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Characteristics of Dry Friction01:21

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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.
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Rolling Resistance01:21

Rolling Resistance

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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.
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Dry Friction01:30

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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.
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Updated: Jul 4, 2025

Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments
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Tailoring the Coefficient of Friction by Direct Laser Writing Surface Texturing.

Caterina Gaudiuso1, Annalisa Volpe1,2, Francesco Paolo Mezzapesa1

  • 1CNR IFN Institute for Photonics and Nanotechnologies, Via Amendola 173, 70126 Bari, Italy.

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|January 26, 2024
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Summary

Laser surface texturing modifies material surfaces at the micro- and nanoscale to enhance tribological performance. This review explores direct laser writing techniques for friction control, focusing on texture arrangement effects in lubricated contacts.

Keywords:
conformal and non-conformal contactsdirect laser writingfriction reductionlaser surface texturingultrafast lasers

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Area of Science:

  • Materials Science and Engineering
  • Surface Engineering
  • Tribology

Background:

  • Surface topography modification is a key strategy for improving material tribological properties, including load capacity and friction reduction.
  • Laser surface texturing (LST) offers precise control over micro- and nanoscale surface features.

Purpose of the Study:

  • To review the current state-of-the-art in laser surface texturing for tribological applications.
  • To highlight the use of direct laser writing for tailoring the coefficient of friction.
  • To analyze the impact of texture arrangement on lubricated contact behavior (conformal and non-conformal).

Main Methods:

  • Review of existing literature on laser surface texturing techniques.
  • Focus on direct laser writing (DLW) as a method for creating surface textures.
  • Analysis of studies investigating the relationship between texture design and tribological performance.

Main Results:

  • Laser surface texturing effectively engineers surface topography to enhance tribological performance.
  • Direct laser writing enables precise control over texture parameters for friction coefficient tailoring.
  • The arrangement of surface textures significantly influences friction in lubricated conformal and non-conformal contacts.

Conclusions:

  • Laser surface texturing is a powerful tool for optimizing material tribological behavior.
  • Direct laser writing provides a versatile platform for designing surfaces with specific friction characteristics.
  • Understanding texture arrangement is crucial for maximizing the benefits of LST in lubricated systems.