A parametric study of laser interference surface patterning of dental zirconia: Effects of laser parameters on topography and surface quality

Roitero, E.; Lasserre, Federico; Anglada, M.; Mücklich, Frank; Jiménez‐Piqué, E.

doi:10.1016/j.dental.2016.09.040

Cited by 51 publications

(39 citation statements)

References 42 publications

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“…2a,b, which is likely to be induced by thermal stress from fast temperature transitions during laser processing. Similar observations were made on zirconia substrates processed by short pulsed DLIP, in case of a higher number of overlapped pulses 39 . The underlying mechanism leading to the occurrence of porosity could not be unambiguously determined, but it is most likely related to localized explosive vaporization events, which might originate from both inhomogeneity in the bulk material and enhanced localized absorption by laser induced surface roughening 37 .…”

Section: Resultssupporting

confidence: 79%

Applying Ultrashort Pulsed Direct Laser Interference Patterning for Functional Surfaces

Müller

Fox

Grützmacher

et al. 2020

Sci Rep

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Surface structures in the micro-and nanometre length scale exert a major influence on performance and functionality for many specialized applications in surface engineering. However, they are often limited to certain pattern scales and materials, depending on which processing technique is used. Likewise, the morphology of the topography is in complex relation to the utilized processing methodology. in this study, the generation of hierarchical surface structures in the micro-as well as the sub-micrometre scale was achieved on ceramic, polymer and metallic materials by utilizing Ultrashort pulsed Direct Laser interference patterning (USp-DLip). the morphologies of the generated patterns where examined in relation to the unique physical interaction of each material with ultrashort pulsed laser irradiation. In this context, the pattern formation on copper, CuZn37 brass and AISI 304 stainless steel was investigated in detail by means of a combination of experiment and simulation to understand the individual thermal interactions involved in USp-DLip processing. thereby, the pattern's hierarchical topography could be tailored besides achieving higher process control in the production of patterns in the sub-µm range by USp-DLip. Highly specific surface properties in nature, like the well-known lotus and shark skin effects, are closely related to surface structures in the micrometre and nanometre length scale, often involving hierarchical patterns 1. In fact, such biomimetic surface patterns have already proven to provide unique properties in several technical systems including the manipulation of contact mechanics and optical properties like light diffraction and absorption 2-4. Patterns on the threshold between the micro-and the nanometre scale also showed to provide promising surface properties for medical products, as they can tailor the adhesion of both, cells and germs 5-7. In this context, current research projects investigate the intricacies to prevent biofilm formation by surface patterning of different solid materials on the International Space Station (ISS), which endanger its crew in terms of both, health and damage to critical components 8. The predominant impact on the unique properties of patterned surfaces is defined by the scale and morphology of the surface features also including sub-patterns, which have to be adjusted specifically for each application. For instance, in antibacterial applications, feature sizes in the sub-µm length scale showed to be most effective against bacterial adhesion 7-10. The processing methodology, dealing with such delicate surface modification, needs to ensure high machining precision as well as processing speeds and costs, which are able to compete with the classical methods of surface engineering. Besides lithographic methods, laser interference-based techniques have proven their worth in generating precise surface patterns, as they provide high processing speeds with little to no need for preparation and post-processing 11. Direct Laser Interference Patterning (DLIP) usi...

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Section: Resultssupporting

confidence: 79%

Applying Ultrashort Pulsed Direct Laser Interference Patterning for Functional Surfaces

Müller

Fox

Grützmacher

et al. 2020

Sci Rep

Self Cite

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“…[102][103][104][105][106] Several strategies are thus explored to obtain such rough surfaces, the most common being sandblasting and chemical etching. Other surface modifications are today proposed for ceramic implants, as laser patterning [107][108][109] or injection molding in matrices 110 with the targeted roughness. As sandblasting followed potentially by chemical etching is the most commonly developed strategy, such treatments were tested in this case study.…”

Section: Case Study 1: Dental Implants With a High Tolerance To Surmentioning

confidence: 99%

Forty years after the promise of «ceramic steel?»: Zirconia‐based composites with a metal‐like mechanical behavior

et al. 2019

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Forty years ago, Garvie and his Australian co‐workers reported that the stress‐induced transformation of metastable tetragonal zirconia grains to the monoclinic symmetry could give rise to a powerful toughening mechanism. Their results even led them to consider zirconia systems as analogues of certain steels. This seminal paper generated extraordinary excitement in the ceramic community and it is still the subject of extensive research. Transformation toughening is widely used in zirconia materials and results in an increase in strength and toughness when compared to nontransformable ceramics, but the implementation into strong, tough, and sufficiently stable materials has not been fully reached. Zirconia ceramics generally fail at low strains with a much larger scatter in the strength values than metals and require statistical approaches to failure. Here we describe in detail the mechanical behavior laws of ceria‐doped zirconia composites exhibiting a high degree of stress‐induced transformation. They present, to some extent, mechanical behavior analogous to a metal, displaying, (a) significant amount of transformation‐induced plasticity without damage, (b) very high flaw tolerance and (c) almost no dispersion in strength data. They potentially open new application avenues in situations where the advantages of ceramics were dampened by their brittle failure behavior. In particular, the consequences of such behavior for dental implants and additive‐manufactured structures are highlighted.

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“…However, proper control of laser parameters is necessary to achieve surface textures with high feature quality. For example, increasing the number of pulses and the laser energy density can increase depth of patterned structures; however, it has a detrimental effect on surface finishing due to formation of porosity [51]. DLIP can also generate a steep thermal gradient on the surface, which can cause microcracking, directional recrystallization and phase transformation [42,52].…”

Section: Direct Laser Interference Patterningmentioning

confidence: 99%

“…Daniel et al [49] 8% Yttria FSZ Nd:YAG, wavelength: 355 nm, pulse duration: 2.5 ns, pulse number: 1 to 100 pulses applied, fluence: 0.2-0.9 J/cm 2 Daniel et al [50] Y-PSZ and Alumina Nd:YAG, wavelength: 355 nm, pulse duration: 2.5 ns, pulse number: 1, 10 and 50 pulses applied, fluence: 0.35-0.95 J/cm 2 Roitero et al [51] 3Y-TZP Nd:YAG, wavelength: 355 nm, pulse duration: 10 ns, pulse number: 1-10 pulses applied, fluence: 0.15-7.15 J/cm 2 Roitero et al [42] 3Y-TZP Nd:YAG, wavelength: 355 and 532 nm, pulse duration: 10 ns, pulse number: single pulse applied, fluence: 3.5 and 4 J/cm 2 Roitero et al [52] 3Y-TZP Nd:YAG, wavelength: 532 nm, pulse duration: 10 ns, pulse number: single pulse applied, fluence: 4 J/cm 2 Berger et al [53] Hydroxyapatite Nd:YAG, wavelength: 266 and 355 nm, pulse duration: 10 ns, pulse number: 1-100 pulses applied, fluence: 0.6-2.4 J/cm 2…”

Section: Materials Laser Informationmentioning

confidence: 99%

Direct Laser Interference Patterning of Bioceramics: A Short Review

et al. 2019

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Bioceramics are a great alternative to use in implants due to their excellent biocompatibility and good mechanical properties. Depending on their composition, bioceramics can be classified into bioinert and bioactive, which relate to their interaction with the surrounding living tissue. Surface morphology also has great influence on the implant biological behavior. Controlled texturing can improve osseointegration and reduce biofilm formation. Among the techniques to produce nano- and micropatterns, laser texturing has shown promising results due to its excellent accuracy and reproducibility. In this work, the use of laser techniques to improve surface morphology of biomaterials is reviewed, focusing on the application of direct laser interference patterning (DLIP) technique in bioceramics.

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A parametric study of laser interference surface patterning of dental zirconia: Effects of laser parameters on topography and surface quality

Cited by 51 publications

References 42 publications

Applying Ultrashort Pulsed Direct Laser Interference Patterning for Functional Surfaces

Applying Ultrashort Pulsed Direct Laser Interference Patterning for Functional Surfaces

Forty years after the promise of «ceramic steel?»: Zirconia‐based composites with a metal‐like mechanical behavior

Direct Laser Interference Patterning of Bioceramics: A Short Review

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