Publications in Scientific Journals:
S. Bashir, M. Rafique, A. Ajami, W. Husinsky, U. Kalsoom:
"The growth of nanoscale periodic and dot-like structures on the surface of stainless steel with femtosecond laser pulses in the dry and wet ambient environment";
Applied Physics A: Materials Science & Processing,
The present work deals with growth of nanoscale
periodic and dot-like structures on the surface of stainless
steel (SS) by the irradiation of femtosecond laser pulses. For
this purpose Ti: Sapphire femtosecond laser pulses (wavelength
of 800 nm, pulse length of 25 fs and pulse repetition
rate of 1 kHz) were employed in a dry (air) and liquid confined
(deionized water and ethanol) environments. The targets
were exposed to 1000 succeeding pulses for various fluences
ranging from 50 to 150 mJ cm−2. Nanoscale structures
including ripples, and dots were observed by SEM analysis.
The growth and dependence of structure-formation on
the ambient environment and laser fluence in both central
as well as peripheral ablated areas is systematically investigated.
The development of nanostructures and nanoripples
is correlated with structural analysis carried out by micro
Created from the Publication Database of the Vienna University of Technology.