Structural coloration of metallic surfaces with micro/nano-structures induced by elliptical vibration texturing

Yang Yang, Yayue Pan, Ping Guo*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

Creating orderly periodic micro/nano-structures on metallic surfaces, or structural coloration, for control of surface apparent color and optical reflectivity has been an exciting research topic over the years. The direct applications of structural coloration include color marking, display devices, and invisibility cloak. This paper presents an efficient method to colorize metallic surfaces with periodic micro/nano-gratings using elliptical vibration texturing. When the tool vibration is coupled with a constant cutting velocity, controlled periodic ripples can be generated due to the overlapping tool trajectory. These periodic ripples with a wavelength near visible spectrum can act as micro-gratings to introduce iridescent colors. The proposed technique also provides a flexible method for color marking of metallic surfaces with arbitrary patterns and images by precise control of the spacing distance and orientation of induced micro/nano-ripples. Theoretical analysis and experimental results are given to demonstrate structural coloration of metals by a direct mechanical machining technique.

Original languageEnglish (US)
Pages (from-to)400-409
Number of pages10
JournalApplied Surface Science
Volume402
DOIs
StatePublished - Apr 30 2017

Keywords

  • Elliptical vibration texturing
  • Micro-grating
  • Structural coloration
  • Vibration-assisted machining

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

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