Related resources
Full-text held externally
Search for item elsewhere
University researcher(s)
Formation of highly organised, periodic microstructures on steel surfaces upon pulsed laser irradiation
Abdolvand, A; LIoyd, R W; Schmidt, Marc; Whitehead, David; Liu, Z; Li, Lin
Applied Physics A: Materials Science & Processing. 2009;95:447-452.
Access to files
Full-text and supplementary files are not available from Manchester eScholar. Full-text is available externally using the following links:
Full-text held externally
Abstract
We present results on the growth of highly organised, reproducible, periodic microstructure arrays on a stainless steel substrate using multi-pulsed Nd:YAG (wavelength of 1064 nm, pulse duration of 7 ns, repetition rate of 25 kHz, beam quality factor of M 2∼1.5) laser irradiation in standard atmospheric environment (room temperature and normal pressure) with laser spot diameter of the target being ∼50 μm. The target surface was irradiated at laser fluence of ∼2.2 J/cm2 and intensity of ∼0.31109 W/cm2, resulting in the controllable generation of arrays of microstructures with average periods ranging from ∼30 to ∼70 μm, depending on the hatching overlap between the consecutive scans. The received tips of the structures were either below or at the level of the original substrate surface, depending on the experimental conditions. The peculiarity of our work is on the utilised approach for scanning the laser beam over the surface. A possible mechanism for the formation of the structures is proposed.
Bibliographic metadata
- Related website http://www.springerlink.com/content/t68r21148r70q750/