Laser Sub-Micron Patterning of Rough Surfaces by Micro-Particle Lens Arrays

Ashfaq Khan, Zengbo Wang, Mohammad A. Sheikh and Lin Li
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Ashfaq Khan: University of Manchester, UK
Zengbo Wang: University of Manchester, UK
Mohammad A. Sheikh: University of Manchester, UK
Lin Li: University of Manchester, UK

International Journal of Manufacturing, Materials, and Mechanical Engineering (IJMMME), 2011, vol. 1, issue 3, 1-9

Abstract: Laser surface patterning by Contact Particles Lens Arrays (CPLA) has been widely utilized for patterning of smooth surfaces but there is no technique developed by which CPLA can be deposited on a rough surface. For deposition of CPLA, conventional techniques require the surface to be flat, smooth and hydrophilic. In this study, a new method for the deposition of CPLA on a rough surface is proposed and utilized for patterning. In this method, a hexagonal closed pack monolayer of SiO2 spheres was first formed by self-assembly on a flat glass surface. The formed monolayer of particles was picked up by a flexible sticky surface and then placed on the rough surface to be patterned. A Nd:YVO4 laser was used to irradiate the substrate with the laser passing through the sticky plastic and the particles. Experimental investigations have been carried out to determine the properties of the patterns.

Date: 2011
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