Formation of Periodic Nanostructures with Femtosecond Laser for Creation of New Functional Biomaterials

Shinonaga, Togo; Kinoshita, Shono; Okamoto, Yasuhiro; Tsukamoto, Masahiro; Okada, Akira

doi:10.1016/j.procir.2016.02.188

Cited by 14 publications

(19 citation statements)

References 18 publications

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“…Complex surface structures can be formed by optimizing theses parameters. [18,19,20,21,22,23,24,25,26,27,28,29,30].…”

Section: Introductionmentioning

confidence: 99%

“…Celen et al [28] created 3D patterns on cp Ti, using the ytterbium fibre laser (20 W, 1064 nm, 125 kHz, 200–250 ns pulse durations) and using laser pulse intensities of approximately 13.92 × 10 8 W·cm −2 . Shinonaga et al [29] investigated the influence of the pulse widths (from 200 fs to 800 fs) on the nanostructures formation on a Ti plate using femtosecond laser (790 nm) at the laser intensity of 2.1 × 10 12 W·cm −2 (laser fluence 0.35 J·cm −2 , track displacement 55 µm). Wang et al [30] created micro-patterns with deposited calcium/phosphorus (Ca/P) elements on a pure titanium surface by a femtosecond laser (800 nm, 1 kHz).…”

Section: Introductionmentioning

confidence: 99%

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A Study of Laser Micromachining of PM Processed Ti Compact for Dental Implants Applications

et al. 2019

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The paper deals with the experimental study of laser beam micromachining of the powder metallurgy processed Ti compacts applying the industrial grade fibre nanosecond laser operating at the wavelength of 1064 nm. The influence of the laser energy density on the surface roughness, surface morphology and surface elements composition was investigated and evaluated by means of surface roughness measurement, scanning electron microscopy (SEM), energy dispersive X-Ray spectroscopy (EDS) and X-ray diffraction (XRD) analysis. The different laser treatment parameters resulted in the surfaces of very different characteristics of the newly developed biocompatible material prepared by advanced low temperature technology of hydride dehydride (HDH) titanium powder compactation. The results indicate that the laser pulse energy has remarkable effects on the machined surface characteristics which are discussed from the point of view of application in dental implantology.

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“…Complex surface structures can be formed by optimizing theses parameters. [18,19,20,21,22,23,24,25,26,27,28,29,30].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Study of Laser Micromachining of PM Processed Ti Compact for Dental Implants Applications

et al. 2019

View full text Add to dashboard Cite

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“…Laser treatment of titanium has been found to be particularly advantageous compared to conventional surface structuring methods because it leads to less contamination of the surfaces [12] and offers the possibility of creating stochastic as well as precise deterministic structures in the microand nanometer range [5,13,14]. In particular, the potential of femtosecond (fs) laser structuring of titanium for use in biomedical implants has been shown in several studies [15][16][17][18]. This technique is superior to nanosecond laser treatments due to opportunity of creating surface topographies with a greater variety of patterns [19].…”

Section: Introductionmentioning

confidence: 99%

“…For example, the influence of laser fluence as well as the number and duration of pulses on the formation of surface structures on titanium has been studied. It has been demonstrated that the spatial periodicity of ripples is affected by the laser pulse duration, which ranges from 200 fs to 800 fs [16]. Furthermore, an increasing number of pulses per spot leads to a decreasing spatial periodicity of ripples [16], whereas the spatial periodicity of microstructures rises with a growing number of laser pulses [22].…”

Section: Introductionmentioning

confidence: 99%

“…It has been demonstrated that the spatial periodicity of ripples is affected by the laser pulse duration, which ranges from 200 fs to 800 fs [16]. Furthermore, an increasing number of pulses per spot leads to a decreasing spatial periodicity of ripples [16], whereas the spatial periodicity of microstructures rises with a growing number of laser pulses [22]. An increase of the spatial periodicity of micrometric ripples (MR) has been observed with a rising number of laser pulses on Ti6Al4V surfaces [23].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Laser Pulse Overlap and Scanning Line Overlap on Femtosecond Laser-Structured Ti6Al4V Surfaces

2020

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Surface structuring is a key factor for the tailoring of proper cell attachment and the improvement of the bone-implant interface anchorage. Femtosecond laser machining is especially suited to the structuring of implants due to the possibility of creating surfaces with a wide variety of nano- and microstructures. To achieve a desired surface topography, different laser structuring parameters can be adjusted. The scanning strategy, or rather the laser pulse overlap and scanning line overlap, affect the surface topography in an essential way, which is demonstrated in this study. Ti6Al4V samples were structured using a 300 fs laser source with a wavelength of 1030 nm. Laser pulse overlap and scanning line overlap were varied between 40% and 90% over a wide range of fluences (F from 0.49 to 12.28 J/cm²), respectively. Four different main types of surface structures were obtained depending on the applied laser parameters: femtosecond laser-induced periodic surface structures (FLIPSS), micrometric ripples (MR), micro-craters, and pillared microstructures. It could also be demonstrated that the exceedance of the strong ablation threshold of Ti6Al4V strongly depends on the scanning strategy. The formation of microstructures can be achieved at lower levels of laser pulse overlap compared to the corresponding value of scanning line overlap due to higher heat accumulation in the irradiated area during laser machining.

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Effect of polymer permittivity on periods of LIPSS formed on titanium with femtosecond laser pulses

2022

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Formation of Periodic Nanostructures with Femtosecond Laser for Creation of New Functional Biomaterials

Cited by 14 publications

References 18 publications

A Study of Laser Micromachining of PM Processed Ti Compact for Dental Implants Applications

A Study of Laser Micromachining of PM Processed Ti Compact for Dental Implants Applications

Effect of Laser Pulse Overlap and Scanning Line Overlap on Femtosecond Laser-Structured Ti6Al4V Surfaces

Effect of polymer permittivity on periods of LIPSS formed on titanium with femtosecond laser pulses

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