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April 3, 2026Tribology LettersOpen Access

Geometry-Driven Asymmetric Tribological Response in Laser-Patterned Cu Surfaces

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Authors

SSSebastian SuarezBABruno AldereteFBFabian Kay Bonner

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Overview

Investigates laser-patterned copper surfaces to assess friction performance and optimize material wear, indicating potential applications in electrical connectors.

Key Points

  • This research explores how different laser-patterned geometries on copper affect friction and wear characteristics.
  • Created anisotropic saw-tooth topographies on copper using direct laser interference patterning.
  • Varied structural periodicity (2, 7.5, 10 µm) and manufacturing angles (15, 30, 45°).
  • Conducted linear reciprocating sliding tests against a hard ceramic counterbody for friction testing.
  • Achieved a maximum frictional asymmetry coefficient of 77% at 7.5 µm periodicity and 15° angle.
  • Shallower flank slopes maximized frictional asymmetry, while steeper slopes minimized it.
  • Grooves in structured surfaces effectively retained worn material, reducing wear rates.

Cite This Study

Suarez et al. (2026) studied this question.

synapsesocial.com/papers/69cf5e2e5a333a821460c53ahttps://doi.org/10.1007/s11249-026-02136-x
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