Ultra‐Low Friction on 100Cr6‐Steel Surfaces After Direct Laser Interference Patterning

Bieda, Matthias; Schmädicke, Cindy; Roch, Teja; Lasagni, Andrés Fabían

doi:10.1002/adem.201400007

Cited by 43 publications

(23 citation statements)

References 40 publications

(45 reference statements)

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“…Former studies about DLIP of metallic surfaces, utilizing ns‐pulsed laser irradiation, showed a limitation in the feasible maximal structure depth up to values of approximately 0.2 times the spatial pitch ( Λ ), especially for pitches below 2 μm . This effect was explained due to the significant decrease of the temperature difference between interference maxima and minima positions, since the heat provided by the laser has enough time to diffuse to the minima by thermal conduction.…”

Section: Introductionmentioning

confidence: 99%

Large Area One‐Step Fabrication of Three‐Level Multiple‐Scaled Micro and Nanostructured Nickel Sleeves for Roll‐to‐Roll Hot Embossing

2017

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Direct laser interference patterning enabled the fabrication of three level multiple-scaled microstructures on nickel surfaces using infrared picosecond laser pulses. While the largest spatial period (1.5 to 5.7 mm) could be controlled by adjusting the angle between the interfering laser beams and the laser wavelength, low and high spatial frequency laser induced periodic surface structures with pitches of approximately 800 nm and 160 nm, respectively, were also observed. Using a set of optimized processing parameters, large area Ni-sleeves were treated. These sleeves were later employed in preliminarily investigations of roll-to-roll high throughput hot-embossing of polymer foils.

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Section: Introductionmentioning

confidence: 99%

Large Area One‐Step Fabrication of Three‐Level Multiple‐Scaled Micro and Nanostructured Nickel Sleeves for Roll‐to‐Roll Hot Embossing

2017

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“…This method enables the large‐scale fabrication of complex structures by systematically varying the dimensions of the gratings superimposed upon each other. Another significant advantage of DLIP compared with other surface patterning methods is that fairly large areas can be processed within a short period of time (up to several cm 2 /s) using single or multiple laser pulses …”

Section: Introductionmentioning

confidence: 99%

Evaluation of Surface Microtopography Engineered by Direct Laser Interference for Bacterial Anti-Biofouling

et al. 2015

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Modification of the biomaterial surface topography is a promising strategy to prevent bacterial adhesion and biofilm formation. In this study, we use direct laser interference patterning (DLIP) to modify polystyrene surface topography at sub-micrometer scale. The results revealed that three-dimensional micrometer structures have a profound impact on bacterial adhesion. Thus, line- and pillar-like patterns enhanced S. aureus adhesion, whereas complex lamella microtopography reduced S. aureus adhesion in static and continuous flow culture conditions. Interestingly, lamella-like textured surfaces retained the capacity to inhibit S. aureus adhesion both when the surface is coated with human serum proteins and when the material is implanted subcutaneously in a foreign-body associated infection model.

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“…For instance, it can be used to improve adhesion between metals and epoxy resin [39,40], but also for precision material cutting and/or drilling [36] on a variety of materials including composites [59,54,43]. Moreover, it has been recently employed to enhance the tribological behavior of steel and diamond coatings [41,58].…”

Section: Introductionmentioning

confidence: 99%

Laser-based surface preparation of composite laminates leads to improved electrodes for electrical measurements

Almuhammadi

Selvakumaran

Alfano

et al. 2015

Applied Surface Science

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Laserbased surface preparation of composite laminates leads to improved electrodes for electrical measurements, Applied Surface Science (2015), http://dx.doi.org/10.1016/j.apsusc. 2015.10.086 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.Page 1 of 32 A c c e p t e d M a n u s c r i p t AbstractElectrical impedance tomography (EIT) is a low-cost, fast and effective structural health monitoring technique that can be used on carbon fiber reinforced polymers (CFRP). Electrodes are a key component of any EIT system and as such they should feature low resistivity as well as high robustness and reproducibility. Surface preparation is required prior to bonding of electrodes. Currently this task is mostly carried out by traditional sanding. However this is a time consuming procedure which can also induce damage to surface fibers and lead to spurious electrode properties. Here we propose an alternative processing technique based on the use of pulsed laser irradiation. The processing parameters that result in selective removal of the electrically insulating resin with minimum surface fiber damage are identified.A quantitative analysis of the electrical contact resistance is presented and the results are compared with those obtained using sanding.

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Ultra‐Low Friction on 100Cr6‐Steel Surfaces After Direct Laser Interference Patterning

Cited by 43 publications

References 40 publications

Large Area One‐Step Fabrication of Three‐Level Multiple‐Scaled Micro and Nanostructured Nickel Sleeves for Roll‐to‐Roll Hot Embossing

Large Area One‐Step Fabrication of Three‐Level Multiple‐Scaled Micro and Nanostructured Nickel Sleeves for Roll‐to‐Roll Hot Embossing

Evaluation of Surface Microtopography Engineered by Direct Laser Interference for Bacterial Anti-Biofouling

Laser-based surface preparation of composite laminates leads to improved electrodes for electrical measurements

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