Creation of micro/nano surface structures on silver using collinear double femtosecond laser pulses with different pulse separation

Nicholas Roth, Craig Zuhlke, Edwin Peng, Scott Hansen, Jeffrey E. Shield, Dennis Alexander

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Self-organized mound-like micro/nanoscale structures are reported for the first time on silver using a dual-pulse femtosecond laser surface processing technique. The dual-pulse laser processing technique reported in this paper uses femtosecond laser pulse pairs with a controlled temporal delay between the leading and trailing pulses. Using dual pulses at higher fluence values, mound-like micro/nanostructures have been created on silver samples for the first time. Formation of the self-organized microstructures is shown to be dependent on the time delay between the leading and trailing pulses. Mound-like microstructures do not develop on silver for overlapped pulses or using single-pulse femtosecond laser surface processing for the parameter space studied. Subsurface microstructure characterization of a single mound-like surface structure is analyzed by cross-sectional analysis using focused ion beam milling followed by scanning electron microscopy and energy dispersive X-ray spectroscopy.

Original languageEnglish (US)
Pages (from-to)145-153
Number of pages9
JournalMultiscale and Multidisciplinary Modeling, Experiments and Design
Volume1
Issue number2
DOIs
StatePublished - Jun 1 2018

Keywords

  • Femtosecond
  • Functionalization
  • Laser
  • Materials
  • Nanotechnology
  • Silver

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Applied Mathematics

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