Experimental studies on effects at micro-structuring of highly reflecting metals using nano- and picosecond-lasers

Reg, Yvonne; Kägeler, Christian; Schmidt, Michael

doi:10.1016/j.phpro.2010.08.143

Cited by 5 publications

(2 citation statements)

References 1 publication

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“…When using picosecond emitters, the angle becomes even larger: 25-50 degrees [17]. With the use of special scanning systems, cylindrical holes can be obtained with sheer walls with a high quality of the wall surface [18].…”

Section: Recess Shapementioning

confidence: 99%

Groove Formation on Metal Substrates by Nanosecond Laser Removal of Melted Material

Amiaga

Ramos-Velazquez

Gorny

et al. 2021

Metals

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An effective strategy to produce grooves on carbon steel substrates by nanosecond laser radiation is proposed. The aim is to increase the productivity of grooves creation. In this study, two different modes of laser treatment are compared. The first mode focuses on the evaporation of material, while the second focuses on the formation of melted material and its removal by the action of pressure vapors produced by evaporated material. Within some ranges of processing parameters, the shape of the groove can be linearly controlled. The dependence of the groove depth also has a logarithmic nature when the number of passes is increased. Using the liquid phase mode in some ranges of parameters can reduce the amount of evaporated material in comparison with standard techniques in which the material is removed in the form of gas, and fine dust is emitted.

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Section: Recess Shapementioning

confidence: 99%

Groove Formation on Metal Substrates by Nanosecond Laser Removal of Melted Material

Amiaga

Ramos-Velazquez

Gorny

et al. 2021

Metals

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“…If the laser light intensity is below the vaporization threshold of the irradiated surface, it leads to a temperature rise of the surface and does not produce significant morphology change. However, if the laser light intensity is above the vaporization threshold, melting and vaporization take place on the surface substrate [25][26][27]. Then the evaporated materials redeposit in the form of micro/nanoparticles, creating desired structures on the surface.…”

Section: Laser-ablated Copper Mesh Without Go Depositionmentioning

confidence: 99%

Electrophoretic Deposition of Graphene Oxide on Laser-Ablated Copper Mesh for Enhanced Oil/Water Separation

Zhou¹,

Shen²,

Cui³

et al. 2019

Coatings

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The fabrication of bionic surfaces resembling hydrophobic plants through micro manufacturing, which creates abundant multi-level micro/nanostructures and elemental variations, has been widely employed to change the surface wettability of metallic materials. Based on the mechanisms for selective permeation of various liquids, it could achieve the function of oil/water separation. Herein, a separation copper membrane fabricated with pulsed laser ablation and modified with graphene oxide (GO) deposition showed a synergetic effect on tunable surface wettability. Micro/nanostructures were generated on the copper substrate membrane through concentric circular scanning, which was followed by hole drilling. Afterwards, charged GO nanosheets were deposited via electrophoresis. The spacing of circular lines, the diameter of the holes and the abundant high-surface-energy hydrophilic oxygen contained in deposited GO amounts could be regulated in the laser processing and deposition, resulting in oleophobicity and hydrophilicity at the same time. The highest contact angle of oil in water of the prepared mesh could reach above 165° with a hole size of 200 µm and a circular line spacing of 100 µm after the laser processing. Water flux and oil-holding capacity, which represent the separation capability of the mesh, were also evaluated. The as-prepared separation mesh also showed great stability under harsh environments.

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Hydrophobicity of laser-textured soda-lime glass

Nur Najwa,

Hilmi,

Aqida

et al. 2024

J. Phys.: Conf. Ser.

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This paper studies the effect of the modified soda-lime glass surface that reduces water adhesion and raises the water contact angle by modifying the laser processing parameter. The study looked at how these variables affected the water contact angle and surface morphology. The characterization was performed using an inverted metallurgical microscope for surface morphology, and a sessile drop test setup for water contact angle measurement and bricklayer pattern with two different hatch spacings of 0.3 and 0.5 mm was used. The results revealed that the highest water contact angle achieved after surface modification for 0.3 mm was 98.97° at 1000 mm/min and 1.0 W while for 0.5 mm at 93.01°, at 600 mm/min and 1.2 W, improved its hydrophobicity from untextured glass 32.35°. Both sample patterns with 0.3 and 0.5 mm show no defect and all samples seem to have a mark from laser texturing with an increase in power, the laser mark on the surface becomes wider and the large gap between the line becomes more distinct. These findings are significant for designing hydrophobic glass surfaces using laser texturing.

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Experimental studies on effects at micro-structuring of highly reflecting metals using nano- and picosecond-lasers

Cited by 5 publications

References 1 publication

Groove Formation on Metal Substrates by Nanosecond Laser Removal of Melted Material

Groove Formation on Metal Substrates by Nanosecond Laser Removal of Melted Material

Electrophoretic Deposition of Graphene Oxide on Laser-Ablated Copper Mesh for Enhanced Oil/Water Separation

Hydrophobicity of laser-textured soda-lime glass

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