Laser-Induced Periodic Surface Structures— A Scientific Evergreen

Bonse, Jörn; Höhm, S.; Kirner, Sabrina V.; Rosenfeld, A.; Krüger, Jörg

doi:10.1109/jstqe.2016.2614183

Cited by 711 publications

(680 citation statements)

References 158 publications

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“…The best results regarding suppression of cell growth were obtained on spike structures which were additionally electrochemically oxidized under acidic conditions. feedback phenomena into characteristic self-ordered surface morphologies, such as nanometric laser-induced periodic surface structures (LIPSS) [10][11][12][13] or micrometer-sized grooves and conical spikes [14,15]. The feedback mechanism during repetitive treatments selects specific spatial periods of the roughness distribution that can absorb radiation better [16].…”

Section: Introductionmentioning

confidence: 99%

Femtosecond laser-induced microstructures on Ti substrates for reduced cell adhesion

et al. 2017

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Section: Introductionmentioning

confidence: 99%

Femtosecond laser-induced microstructures on Ti substrates for reduced cell adhesion

et al. 2017

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“…These structures are oriented perpendicularly to the laser polarization with a period comparable to the laser wavelength. The presence of LSFL with similar conditions of irradiation has been previously assessed in other works in the literature [47][48][49][50].…”

Section: Resultsmentioning

confidence: 94%

Design and characterization of textured surfaces for applications in the food industry

Lazzini¹,

Romoli²,

Blunt³

et al. 2017

Surf. Topogr.: Metrol. Prop.

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Description of two-process surface topography W Grabon and P Pawlus -A study of variations of areal parameters on machined surfaces P Pawlus, W Grabo, R Reizer et al. AbstractThe aim of this work is to design, manufacture and characterize surface morphologies on AISI 316L stainless steel produced by a custom designed laser-texturing strategy. Surface textures were characterized at a micrometric dimension in terms of areal parameters compliant with ISO 25178, and correlations between these parameters and processing parameters (e.g. laser energy dose supplied to the material, repetition rate of the laser pulses and scanning velocity) were investigated. Preliminary efforts were devoted to the research of special requirements for surface morphology that, according to the commonly accepted research on the influence of surface roughness on cellular adhesion on surfaces, should discourage the formation of biofilms. The topographical characterization of the surfaces was performed with a coherence scanning interferometer. This approach showed that increasing doses of energy to the surfaces increased the global level of roughness as well as the surface complexity. Moreover, the behavior of the parameters S pk , S vk also indicates that, due to the ablation process, an increase in the energy dose causes an average increase in the height of the highest peaks and in the depth of the deepest dales. The study of the density of peaks S pd showed that none of the surfaces analyzed here seem to perfectly match the conditions dictated by the theories on cellular adhesion to confer anti-biofouling properties. However, this result seems to be mainly due to the limits of the resolving power of coherence scanning interferometry, which does not allow the resolution of submicrometric features which could be crucial in the prevention of cellular attachment.

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“…Accordingly to the many times experimentally confirmed interference model [29,30]; the process of the formation of periodic structures can be schematically represented as follows: the process begins with the appearance of a periodically modulated interference light field in a space near the surface. The reason for its appearance is the interference of an incident light wave with a wave scattered by a certain surface roughness.…”

Section: Fig 2 Zone Of a Single Pulse Action On The Sample Surfacementioning

confidence: 99%

Features of changes in the nanostructure and colorizing of copper during scanning with a femtosecond laser beam

2017

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We have studied the nanostructuring and colorizing of the copper surface by scanning with a femtosecond laser beam with a near-Gaussian beam profile. The experimental studies were conducted using a femtosecond laser comprising a Ti:Sapphire oscillator and a multi-pass amplifier with the maximum pulse energy of 0.7 mJ, pulse frequency of 1 kHz, and pulse duration <30 fs. It is shown that the use of a short-pulsed femtosecond laser leads to the formation of wavelength scale periodic surface structures and eventually increases the brightness of the color of the copper surface. It is revealed that via reciprocally scanning the copper surface by multiple ultrashort laser pulses with a weakly asymmetric spatial energy density distribution and an energy density below the material ablation threshold, it is possible to create a combined nanostructure composed of low-spatial-frequency laser-induced periodic surface structures coated with nanoscale roughness. It is shown that relatively minor changes in the nanostructures obtained by scanning the copper surface by multiple ultrashort laser pulses can lead to a significant change in the color during surface colorizing.Keywords: femtosecond laser beam, copper colorizing, nanostructure, forward and reverse scanning, energy density.Citation: Liedl G, Pospichal R, Murzin SP. Features of changes in the nanostructure and colorizing of copper during scanning with a femtosecond laser beam.

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Laser-Induced Periodic Surface Structures— A Scientific Evergreen

Cited by 711 publications

References 158 publications

Femtosecond laser-induced microstructures on Ti substrates for reduced cell adhesion

Femtosecond laser-induced microstructures on Ti substrates for reduced cell adhesion

Design and characterization of textured surfaces for applications in the food industry

Features of changes in the nanostructure and colorizing of copper during scanning with a femtosecond laser beam

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