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http://dx.doi.org/10.21289/KSIC.2019.22.3.243

Comparison study of nanosecond laser induced wet and dry ablation of PMMA  

lee, Ho (Kyungpook National University, School of Mechanical engineering)
Publication Information
Journal of the Korean Society of Industry Convergence / v.22, no.3, 2019 , pp. 243-250 More about this Journal
Abstract
The nanosecond laser assisted ablation have been investigated. The biocompatable polymer PMMA was employed as the target material and the two distinctive surface conditions were test. The first surface condition is a dry surface for which the target surface is exposed to air and the second surface condition is the wet surface for which the target surface is covered with dehydrated water. The ablation volume, the laser induced acoustic wave, the laser induced plasma were investigated for both wet and dry condition. The nanosecond laser pulse ablatied more on the wet surface compared to the dry surface. The enhanced ablation of wet surface is attributed to the confined acoustic wave and the laser-induced plasma in the liquid layer.
Keywords
Pulsed laser-assisted ablation; wet ablation; dry ablation; nanosecond laser; laser ablation of PMMA;
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