Influence of multi-wavelength ultrafast laser texturing and autoclave sterilization on titanium alloy-based surface wettability

Pallarés-Aldeiturriaga, D.; Papa, Steve; Khalil, Alain Abou; Pascale-Hamri, Alina; Maalouf, Mira; Maïo, Yoan Di; Guignandon, Alain; Dumas, Virginie; Sedao, Xxx

doi:10.1007/s00339-022-06015-9

Cited by 6 publications

(5 citation statements)

References 22 publications

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“…Previous studies have shown that a decrease in laser wavelength is linked to the generation of smaller structures in the context of LIPSS. [ 114,115 ] In the domain of 2D‐LIPSS, encompassing both types I and II, these questions remain intriguing and merit thorough investigation. Particularly, it is yet to be determined whether 2D‐LIPSS‐I could achieve a scale similar to that of 2D‐LIPSS‐II through laser wavelength reduction.…”

Section: Limitations and Perspectivesmentioning

confidence: 99%

Beyond the Microscale: Advances in Surface Nanopatterning by Laser‐Driven Self‐Organization

Nakhoul,

Colombier

2024

Laser & Photonics Reviews

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Designing complex local properties that seamlessly integrate efficient functions into processed materials presents a formidable challenge. A promising solution has emerged in the form of ultrafast laser‐surface structuring. Through time‐controlled polarization ultrafast irradiation at the picosecond timescale, spontaneous self‐organization of surfaces can be induced. The thermal gradient length scale unfolds on the micro‐ and nanoscale, instigating thermoconvection that leads to structured surfaces upon quenching. Convective instabilities dynamically shape intricate yet self‐regulated periodic relief structures. The ability to achieve laser‐induced self‐organization in both surface dimensions holds immense scientific importance, as it unlocks the potential to create uniform periodic 2D patterns by harnessing the inherent regulation of nonlinear dynamics processes in fluids. This comprehensive review explores recent advances in understanding and leveraging ultrafast laser‐induced self‐organization for precise patterning across versatile scales and applications. The insights herein hold the potential to drive significant advancements in nanoscale manufacturing through 2D laser‐induced periodic surface structures.

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Section: Limitations and Perspectivesmentioning

confidence: 99%

Beyond the Microscale: Advances in Surface Nanopatterning by Laser‐Driven Self‐Organization

Nakhoul,

Colombier

2024

Laser & Photonics Reviews

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“…Laser ultra-high precision processing of materials has been widely known for more than five decades. More specifically, the generation of Laser-Induced Periodic Structures (LIPSS or ripples) is a universal phenomenon paving the way for numerous applications 1 , such as tuning the wettability of surfaces 2,3 , adding anti-bacterial functionalities 2,4 , or controlling cell adhesion [5][6][7][8] . Femtosecond lasers can generate LIPSS on surfaces with a periodicity that depends on the irradiation wavelength.…”

Section: Introductionmentioning

confidence: 99%

“…When the LSFL exhibit a period Λ L larger than half of the laser irradiation wavelength λ i /2, generally oriented perpendicular to the laser polarization, the HSFL show a periodicity Λ H lower than half of the laser irradiation wavelength. Using shorter irradiation wavelength results in lower ripple periodicity, for both LSFL and HSFL, and recent cutting-edge developments in ultraviolet (UV) fs lasers unlock sharper surface structuring with enhanced optical, chemical or mechanical effects 3,[10][11][12] . To characterized these nanostructures Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM) are the gold standard tools but are challenging on dielectric or fragile samples that cannot be metalized or when LIPSS amplitude is of interest.…”

Section: Introductionmentioning

confidence: 99%

Nondestructive inspection of surface nanostructuring using label-free optical super-resolution imaging

Aguilar

Khalil

Pallarés-Aldeiturriaga

et al. 2023

Preprint

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Ultrafast laser processing can induce surface nanostructurating (SNS) in most materials with dimensions close to the irradiation laser wavelength. In-situ SNS characterization could be key for laser parameter’s fine-tuning, essential for the generation of complex and/or hybrid nanostructures. Laser Induced Periodic Surface Structures (LIPSS) created in the ultra-violet (UV) range generate the most fascinating effects. They are however highly challenging to characterize in a non-destructive manner since their dimensions can be as small as 100 nm. Conventional optical imaging methods are indeed limited by diffraction to a resolution of ≈ 150 nm. Although optical super-resolution techniques can go beyond the diffraction limit, which in theory allows the visualization of LIPSS, most super-resolution methods require the presence of small probes (such as fluorophores) which modifies the sample and is usually incompatible with a direct surface inspection. In this paper, we demonstrate that a modified label-free Confocal Reflectance Microscope (CRM) in a photon reassignment regime (also called re-scan microscopy) can detect sub-diffraction limit LIPSS. SNS generated on a titanium sample irradiated with a λ=257 nm femtosecond UV-laser were characterized with nanostructuring period ranging from 105 nm to 172 nm. Our label-free, non-destructive optical surface inspection was done at 180μm²/s, and the results are compared with commercial SEM showing the metrological efficiency of our approach.

show abstract

“…Laser ultra-high precision processing of materials has been widely known for more than five decades. More specifically, the generation of Laser-Induced Periodic Structures (LIPSS or ripples) is a universal phenomenon paving the way for numerous applications 1 , such as tuning the wettability of surfaces 2 , 3 , adding anti-bacterial functionalities 2 , 4 , or controlling cell adhesion 5 – 8 . Femtosecond lasers can generate LIPSS on surfaces with a periodicity that depends on the irradiation wavelength.…”

Section: Introductionmentioning

confidence: 99%

“…When the LSFL exhibit a period larger than half of the laser irradiation wavelength , generally oriented perpendicular to the laser polarization, the HSFL show a periodicity lower than half of the laser irradiation wavelength. Using shorter irradiation wavelength results in lower ripple periodicity, for both LSFL and HSFL, and recent cutting-edge developments in ultraviolet (UV) fs lasers unlock sharper surface structuring with enhanced optical, chemical or mechanical effects 3 , 10 – 12 . To characterize these nanostructures Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM) are the gold standard tools but are challenging on dielectric or fragile samples that cannot be metalized or when LIPSS amplitude is of interest.…”

Section: Introductionmentioning

confidence: 99%

Nondestructive inspection of surface nanostructuring using label-free optical super-resolution imaging

Aguilar

Khalil

Pallarés-Aldeiturriaga

et al. 2023

Sci Rep

Self Cite

View full text Add to dashboard Cite

Ultrafast laser processing can induce surface nanostructurating (SNS) in most materials with dimensions close to the irradiation laser wavelength. In-situ SNS characterization could be key for laser parameter’s fine-tuning, essential for the generation of complex and/or hybrid nanostructures. Laser Induced Periodic Surface Structures (LIPSS) created in the ultra-violet (UV) range generate the most fascinating effects. They are however highly challenging to characterize in a non-destructive manner since their dimensions can be as small as 100 nm. Conventional optical imaging methods are indeed limited by diffraction to a resolution of $$\approx 150$$ ≈ 150 nm. Although optical super-resolution techniques can go beyond the diffraction limit, which in theory allows the visualization of LIPSS, most super-resolution methods require the presence of small probes (such as fluorophores) which modifies the sample and is usually incompatible with a direct surface inspection. In this paper, we demonstrate that a modified label-free Confocal Reflectance Microscope (CRM) in a photon reassignment regime (also called re-scan microscopy) can detect sub-diffraction limit LIPSS. SNS generated on a titanium sample irradiated with a $$\lambda =257$$ λ = 257 nm femtosecond UV-laser were characterized with nanostructuring period ranging from 105 to 172 nm. Our label-free, non-destructive optical surface inspection was done at 180 $$\upmu$$ μ m$$^2$$ 2 /s, and the results are compared with commercial SEM showing the metrological efficiency of our approach.

show abstract

Influence of multi-wavelength ultrafast laser texturing and autoclave sterilization on titanium alloy-based surface wettability

Cited by 6 publications

References 22 publications

Beyond the Microscale: Advances in Surface Nanopatterning by Laser‐Driven Self‐Organization

Beyond the Microscale: Advances in Surface Nanopatterning by Laser‐Driven Self‐Organization

Nondestructive inspection of surface nanostructuring using label-free optical super-resolution imaging

Nondestructive inspection of surface nanostructuring using label-free optical super-resolution imaging

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