Laser Ablation of Metal Substrates for Super-hydrophobic Effect

Abstract

The LMTB has designed and implemented a novel optical concept for the development of a versatile trepanning system, enabling the adjustment of the displacement and the inclination angle during circular rotation at up to 20000 r.p.m. The presented trepanning systems are able to laser machine through-holes diameters of 100 µm with a negative taper of up to 5°. Starting from an early stage of implementation, the novel trepanning system has been customized for different applications and industrial partners. The conference paper outlines the development steps and advanced performance, accenting laser micro machining results utilizing the novel LMTB trepanning system in operation at different laser parameters.

Experimental investigation on surface wettability of copper-based dry bioelectrodes

“…In previous study, different surface micro/nanostructures have been fabricated using laser micromachining process [25,26]. The laser micromachining process can be simply defined as a material removal process by heating the surface material with a laser beam, which includes four processing stages of surface material heating, surface material melting, material evaporation, and ionization as well as evaporation spray and fluid ejection [27,28].…”

Laser microprocessing and nanoengineering of large-area functional micro/nanostructures

“…Laser microprocessing not only can mark or engrave material surfaces, but also can extend to the surface treatment and laser cleaning to remove rusting, oxidizing and painting. At this point, the other example is on the tuning of wetting property on metal substrates [14]. Spike shape micro-structures are fabricated on the brass substrates by controlling the UV laser beam scanning along a quadrilateral grid, as shown in Fig.…”

Quasi-superhydrophobic porous silicon surface fabricated by ultrashort pulsed-laser ablation and chemical etching

“…To mimic such superhydrophobic surfaces, many physical and chemical methods have been developed to synthesize such surfaces either by constructing micro/nanostructures on surfaces exhibiting low surface energy, or by lowering the surface energy of rough surfaces. These methods include phase separation [3,4], crystal growth [1,[5][6][7], photolithography [8], electron beam lithography [9], electrospinning [10], using anodic aluminum oxide [11], pulsed-laser irradiation [12][13][14][15][16][17], and chemical etching [18,19].…”