Structural and oxide-based colours on laser textured copper

Killaire, Graham; Walia, Jaspreet; Rashid, Sabaa; Berini, Pierre; Weck, Arnaud

doi:10.1016/j.apsusc.2022.152440

Cited by 6 publications

(6 citation statements)

References 26 publications

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“…Nowadays, the laser is being extensively used as a new processing tool to change the appearance and shape of materials. In particular, color changes obtained by laser treatment have recently attracted much research interest, [1][2][3][4][5][6][7][8][9][10] since structural color fabrication showing wide application prospects in science and art is still restricted by costly and time-consuming structuring processes, which would be partially overcome by laser processing technologies.…”

Section: Introductionmentioning

confidence: 99%

Ink‐Assisted Laser‐Induced Heterogeneous Permanent/Erasable Nanostructures on Metals

Zhou

Liu

et al. 2023

Laser & Photonics Reviews

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Structural color fabrication attracting significant interest for science and art is usually restricted by costly and time‐consuming structuring processes or inerasable characteristics of structures. Herein, by developing a universal, low‐cost technical solution—the nanosecond laser irradiation of ink (Solvent Black 7) layers coated on metal—laser‐induced heterogeneous permanent/erasable nanostructures (LIHPEN) are produced successfully on multiple metals, especially noble metals, without ablation damage to intrinsic surfaces. LIHPEN consist of uniform laser‐induced periodic surface structures produced by surface plasmon polariton excitation of metals and can be extended into 2D hybrid micro/nanostructures by introducing the direct laser interference patterning technique. LIHPEN technology operated under a large processing parameter window can realize space‐selective erasability of prepared structures by controlling processing parameters, which determine the ink‐layer carbonization degree and thus the permanent or erasable characteristic. Because ink layers can be coated manually, in addition to realizing digital scanning patterns, LIHPEN technology can be integrated with traditional artistic techniques to solidify and color artworks without risk of information loss and leakage in digital copying. LIHPEN with good durability can exhibit vivid structural colors on metals, demonstrating its great potential in fields of artwork iridescent coloring, encryption, and anti‐counterfeiting, particularly those requiring customization, personalization, and rewritability.

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Section: Introductionmentioning

confidence: 99%

Ink‐Assisted Laser‐Induced Heterogeneous Permanent/Erasable Nanostructures on Metals

Zhou

Liu

et al. 2023

Laser & Photonics Reviews

View full text Add to dashboard Cite

show abstract

“…[40,41] However, the work conducted so far with infrared laser photooxidation sometimes presents several undesirable side-effects, like the fabrication of laser induced periodic surface structures (LIPSS) that inevitably produce a strong angle-dependency of the coloring of the surface via diffraction. [31,42] In this paper, we address these limitations by performing efficient photo-oxidation with a femtosecond laser in the DUV range at 257 nm. The increase in photon energy improves the oxidation rate by approaching the bond dissociation energy of molecular oxygen, [43] while the increased absorption cross-section of copper allows for effective localized heat deposition.…”

Section: Introductionmentioning

confidence: 99%

“…Oxide layers constitute one of the most suitable options for the production of thin‐films on copper, for it is well‐known that this metal easily oxidizes and produces robust, long‐lasting oxide layers. [ 28–32 ]…”

Section: Introductionmentioning

confidence: 99%

“…[ 40,41 ] However, the work conducted so far with infrared laser photo‐oxidation sometimes presents several undesirable side‐effects, like the fabrication of laser induced periodic surface structures (LIPSS) that inevitably produce a strong angle‐dependency of the coloring of the surface via diffraction. [ 31,42 ]…”

Section: Introductionmentioning

confidence: 99%

“…Oxide layers constitute one of the most suitable options for the production of thin-films on copper, for it is well-known that this metal easily oxidizes and produces robust, long-lasting oxide layers. [28][29][30][31][32] The chemical mechanism of copper oxidation is well understood, [33] and several methods allow fabricating such films with high accuracy and reproducibility. [34,35] Although an ideal thin-film deposition method like atomic sputtering or epitaxial growth may produce results of unrivaled homogeneity, [28] extensive environment control and vacuum requirements render this approach complex.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Efficient Composite Colorization of Copper by Spatially Controlled Oxidation with Deep‐UV Ultrafast Lasers

Groussin,

Martinez‐Calderon,

Beldarrain

et al. 2023

Advanced Optical Materials

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Colorizing metals using micrometer and nanometer scale surface modifications has been vastly investigated and presents many advantages for applications across scientific and technological fields. By tuning the surface chemical composition or controlling its morphology, it is possible to produce a wide range of chromatic effects. Ultrafast laser processing presents here an interesting asset, as it allows to simultaneously provide chemical and morphological modifications at the micro‐scale in a single step. In this article, the composite colorization of copper surfaces with mW‐class average power deep ultraviolet (DUV) femtosecond laser pulses is demonstrated. The advantages of this setup are twofold: first, thanks to the increased absorption of copper in the DUV, the technique allows scaling down the requirement for laser power. Second, under ultrafast short‐wavelength illumination molecular oxygen bond‐breaks occur, enhancing the oxidation rate of the copper. The technique allows for highly controllable and efficient copper oxidation with the irradiation parameters. Taking these two effects into account, the generation of a wide spectrum of colors—from dark blue to shiny red—is demonstrated, and the role of the surface oxidation rate, the laser fluence, and laser scanning strategies in the colorization of copper surfaces employing DUV lasers is discussed.

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Stainless steel colouring using burst and biburst mode ultrafast laser irradiation

Gaidys,

Selskis,

Gečys

et al. 2024

Optics & Laser Technology

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Structural and oxide-based colours on laser textured copper

Cited by 6 publications

References 26 publications

Ink‐Assisted Laser‐Induced Heterogeneous Permanent/Erasable Nanostructures on Metals

Ink‐Assisted Laser‐Induced Heterogeneous Permanent/Erasable Nanostructures on Metals

Efficient Composite Colorization of Copper by Spatially Controlled Oxidation with Deep‐UV Ultrafast Lasers

Stainless steel colouring using burst and biburst mode ultrafast laser irradiation

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