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Influence of gas media and low pressure on the dynamics of wetting transition of laser textured stainless steel meshes during air ageing
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  • Vyacheslav V. Kim,
  • Sharjeel Ahmed Khan,
  • Vadim Sh. Yalishev,
  • Mazhar Iqbal,
  • Ganjaboy S. Boltaev,
  • Rashid A. Ganeev,
  • Ali S. Alsaner
Vyacheslav V. Kim
American University of Sharjah
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Sharjeel Ahmed Khan
American University of Sharjah
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Vadim Sh. Yalishev
American University of Sharjah
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Mazhar Iqbal
American University of Sharjah
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Ganjaboy S. Boltaev
American University of Sharjah
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Rashid A. Ganeev
American University of Sharjah
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Ali S. Alsaner
American University of Sharjah
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Abstract

We analyze the role of the processing atmosphere and influence of long term ageing (up to 30 days) in ambient air on the wettability of the laser-processed stainless steel meshes. The effect of low-pressure and vacuum ageing transform the initial superhydrophilic characteristics of freshly laser structured mesh to near superhydrophobic state. Laser texturing of meshes was carried out in the presence of different gas environmental conditions: N 2 , O 2 , CO 2 , Ar, SF 6 , ambient atmospheric air and under different vacuum conditions. The influence of each gas on the time evolution of the wettability properties after ageing in ambient air is analyzed.