Details
| Original language | English |
|---|---|
| Pages (from-to) | 8845-8852 |
| Number of pages | 8 |
| Journal | Applied surface science |
| Volume | 258 |
| Issue number | 22 |
| Publication status | Published - 29 May 2012 |
| Externally published | Yes |
Abstract
Novel interaction regime of femtosecond laser pulses with steel surface at high peak irradiation fluences (0.82-10 J/cm 2 ) has been observed and thoroughly investigated. This interaction regime allows the generation of well defined microrough surfaces. To investigate the mechanisms involved in the formation of sub-focus microscale cavities and protrusions, the influence of key structuring parameters has been analyzed using a multi-pulse/multi-point layout. Threshold-like appearance of large amplitude sub-focus corrugations and micropores with the variation of laser fluence, hatch spacing, and radiation exposure has been observed. The dependencies of these threshold values on ambient gas pressure and focal spot size have been verified. The established experimental background has been applied for the fabrication of ordered rough-porous patterns with the feature sizes in the range of 1-25 μm.
Keywords
- Femtosecond laser, Micropatterns, Microstructure formation, Porous surface, Self-assembled features
ASJC Scopus subject areas
- Chemistry(all)
- Physics and Astronomy(all)
- Condensed Matter Physics
- Physics and Astronomy(all)
- Physics and Astronomy(all)
- Surfaces and Interfaces
- Materials Science(all)
- Surfaces, Coatings and Films
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In: Applied surface science, Vol. 258, No. 22, 29.05.2012, p. 8845-8852.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Formation of corrugated and porous steel surfaces by femtosecond laser irradiation
AU - Kuršelis, Kestutis
AU - Kiyan, Roman
AU - Chichkov, Boris N.
N1 - Funding information: This work was supported by the European Commission , FP7 Project Contract No. ICT-2007-224205 (microFLUID – micro-Fabrication of polymeric Lab-on-a-chip by Ultrafast lasers with Integrated optical Detection).
PY - 2012/5/29
Y1 - 2012/5/29
N2 - Novel interaction regime of femtosecond laser pulses with steel surface at high peak irradiation fluences (0.82-10 J/cm 2 ) has been observed and thoroughly investigated. This interaction regime allows the generation of well defined microrough surfaces. To investigate the mechanisms involved in the formation of sub-focus microscale cavities and protrusions, the influence of key structuring parameters has been analyzed using a multi-pulse/multi-point layout. Threshold-like appearance of large amplitude sub-focus corrugations and micropores with the variation of laser fluence, hatch spacing, and radiation exposure has been observed. The dependencies of these threshold values on ambient gas pressure and focal spot size have been verified. The established experimental background has been applied for the fabrication of ordered rough-porous patterns with the feature sizes in the range of 1-25 μm.
AB - Novel interaction regime of femtosecond laser pulses with steel surface at high peak irradiation fluences (0.82-10 J/cm 2 ) has been observed and thoroughly investigated. This interaction regime allows the generation of well defined microrough surfaces. To investigate the mechanisms involved in the formation of sub-focus microscale cavities and protrusions, the influence of key structuring parameters has been analyzed using a multi-pulse/multi-point layout. Threshold-like appearance of large amplitude sub-focus corrugations and micropores with the variation of laser fluence, hatch spacing, and radiation exposure has been observed. The dependencies of these threshold values on ambient gas pressure and focal spot size have been verified. The established experimental background has been applied for the fabrication of ordered rough-porous patterns with the feature sizes in the range of 1-25 μm.
KW - Femtosecond laser
KW - Micropatterns
KW - Microstructure formation
KW - Porous surface
KW - Self-assembled features
UR - http://www.scopus.com/inward/record.url?scp=84863530288&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2012.05.102
DO - 10.1016/j.apsusc.2012.05.102
M3 - Article
AN - SCOPUS:84863530288
VL - 258
SP - 8845
EP - 8852
JO - Applied surface science
JF - Applied surface science
SN - 0169-4332
IS - 22
ER -