Comparison of KrF and ArF excimer laser treatment of biopolymer surface

Michaljaničová, I.; Slepička, Petr; Heitz, J.; Barb, Ruxandra-Aida; Sajdl, Petr; Švorčı́k, Václav

doi:10.1016/j.apsusc.2015.02.137

Cited by 29 publications

(18 citation statements)

References 32 publications

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“…Michaljaničová et al investigated the impact of two different excimer lasers (KrF and ArF) on biodegradable poly-L-lactide and poly(hydroxybutyrate). [38] The treatments caused changes in surface morphology, chemical changes in the carbon to oxygen ratio on the surface, and changes in thermal properties. Comparison of results showed that poly-L-lactide and poly(hydroxybutyrate) were altered to different degrees and that ArF excimer laser treatment caused greater modification of the surface than the treatment with a KrF laser.…”

Section: Discussionmentioning

confidence: 99%

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Laser processing of polymer constructs from poly(3-hydroxybutyrate)

Volova

Tarasevich

Golubev

et al. 2015

Journal of Biomaterials Science, Polymer Edition

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CO2 laser radiation was used to process poly(3-hydroxybutyrate) constructs - films and 3D pressed plates. Laser processing increased the biocompatibility of unperforated films treated with moderate uniform radiation, as estimated by the number and degree of adhesion of NIH 3T3 mouse fibroblast cells. The biocompatibility of perforated films modified in the pulsed mode did not change significantly. At the same time, pulsed laser processing of the 3D plates produced perforated scaffolds with improved mechanical properties and high biocompatibility with bone marrow-derived multipotent, mesenchymal stem cells, which show great promise for bone regeneration.

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Section: Discussionmentioning

confidence: 99%

“…[33,38] Excimer lasers have a short wavelength, high intensity, and short pulse. Therefore, ablation occurs with the minimum transfer of the heat energy of the surface treated.…”

Section: Discussionmentioning

confidence: 99%

Laser processing of polymer constructs from poly(3-hydroxybutyrate)

Volova

Tarasevich

Golubev

et al. 2015

Journal of Biomaterials Science, Polymer Edition

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“…Picosecond-pulsed laser irradiation at UV and VIS wavelengths was successfully applied to ablate three different types of PHAs, proving the capability of ultra-short pulsed lasers to process these polymers at longer wavelengths than those required by short-pulsed lasers, which are in the middle-and far-UV regions [15,16,18]. The fluence applied here (Table 1) was much higher than that applied by Michaljanicova et al [18] on P3HB to increase surface roughness and cause chemical and phase bulk changes via nanosecond excimer lasers at middle-and far-UV regions (F > 15 mJcm −2 ). However, no significant structural changes nor surface affectation was observed here when applying picosecond lasers at high laser fluencies (F > 1 Jcm −2 ).…”

Section: Discussionmentioning

confidence: 99%

“…Laser micro-processing offers many advantages compared to other existing surface micro structuring technologies, such as versatility in terms of materials to be processed (almost any material) and geometries to be generated, the fact of being a single-step and contactless method, and the easy adaptation of the process for micropatterning of tubular or more complex sample shapes [13]. Laser ablation by CO2 and short-pulsed (nanoseconds) lasers has been applied before on polyhydroxy butyrate (P3HB) to cut the material or modify its surface or bulk properties [14][15][16][17][18]. However, ultrashort pulsed lasers (in the picosecond and the femtosecond range) allow to generate surface microfeatures with higher precision and minimal thermal and chemical impact on biodegradable and biocompatible polymers [19,20].…”

Section: Introductionmentioning

confidence: 99%

Picosecond Laser Ablation of Polyhydroxyalkanoates (PHAs): Comparative Study of Neat and Blended Material Response

Ortiz¹,

Basnett

Roy

et al. 2020

Polymers

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Polyhydroxyalkanoates (PHAs) have emerged as a promising biodegradable and biocompatible material for scaffold manufacturing in the tissue engineering field and food packaging. Surface modification is usually required to improve cell biocompatibility and/or reduce bacteria proliferation. Picosecond laser ablation was applied for surface micro structuring of short- and medium-chain length-PHAs and its blend. The response of each material as a function of laser energy and wavelength was analyzed. Picosecond pulsed laser modified the surface topography without affecting the material properties. UV wavelength irradiation showed halved ablation thresholds compared to visible (VIS) wavelength, revealing a greater photochemical nature of the ablation process at ultraviolet (UV) wavelength. Nevertheless, the ablation rate and, therefore, ablation efficiency did not show a clear dependence on beam wavelength. The different mechanical behavior of the considered PHAs did not lead to different ablation thresholds on each polymer at a constant wavelength, suggesting the interplay of the material mechanical parameters to equalize ablation thresholds. Blended-PHA showed a significant reduction in the ablation threshold under VIS irradiation respect to the neat PHAs. Picosecond ablation was proved to be a convenient technique for micro structuring of PHAs to generate surface microfeatures appropriate to influence cell behavior and improve the biocompatibility of scaffolds in tissue engineering.

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“…According to Equation (3), R value depends on both the refractive index ( n ) and the extinction coefficient ( κ ). Thus, the laser radiation intensity within material at a depth (z) can be rewritten by taking Equation (3) into Equation (2) which leads to following relationship [ 224 , 225 ] as shown in Equation (4):

…”

Section: Influence Of Laser Irradiation On Polymermentioning

confidence: 99%

3D-MID Technology for Surface Modification of Polymer-Based Composites: A Comprehensive Review

et al. 2020

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The three-dimensional molded interconnected device (3D-MID) has received considerable attention because of the growing demand for greater functionality and miniaturization of electronic parts. Polymer based composite are the primary choice to be used as substrate. These materials enable flexibility in production from macro to micro-MID products, high fracture toughness when subjected to mechanical loading, and they are lightweight. This survey proposes a detailed review of different types of 3D-MID modules, also presents the requirement criteria for manufacture a polymer substrate and the main surface modification techniques used to enhance the polymer substrate. The findings presented here allow to fundamentally understand the concept of 3D-MID, which can be used to manufacture a novel polymer composite substrate.

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Comparison of KrF and ArF excimer laser treatment of biopolymer surface

Cited by 29 publications

References 32 publications

Laser processing of polymer constructs from poly(3-hydroxybutyrate)

Laser processing of polymer constructs from poly(3-hydroxybutyrate)

Picosecond Laser Ablation of Polyhydroxyalkanoates (PHAs): Comparative Study of Neat and Blended Material Response

3D-MID Technology for Surface Modification of Polymer-Based Composites: A Comprehensive Review

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