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Femtosecond laser fabrication of engineered functional surfaces based on biodegradable polymer and biopolymer/ceramic composite thin films

(2019) POLYMERS. 11(2).
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Abstract
Surface functionalization introduced by precisely-defined surface structures depended on the surface texture and quality. Laser treatment is an advanced, non-contact technique for improving the biomaterials surface characteristics. In this study, femtosecond laser modification was applied to fabricate diverse structures on biodegradable polymer thin films and their ceramic blends. The influences of key laser processing parameters like laser energy and a number of applied laser pulses (N) over laser-treated surfaces were investigated. The modification of surface roughness was determined by atomic force microscopy (AFM). The surface roughness (R-rms) increased from approximately 0.5 to nearly 3 mu m. The roughness changed with increasing laser energy and a number of applied laser pulses (N). The induced morphologies with different laser parameters were compared via Scanning electron microscopy (SEM) and confocal microscopy analysis. The chemical composition of exposed surfaces was examined by FTIR, X-ray photoelectron spectroscopy (XPS), and XRD analysis. This work illustrates the capacity of the laser microstructuring method for surface functionalization with possible applications in improvement of cellular attachment and orientation. Cells exhibited an extended shape along laser-modified surface zones compared to non-structured areas and demonstrated parallel alignment to the created structures. We examined laser-material interaction, microstructural outgrowth, and surface-treatment effect. By comparing the experimental results, it can be summarized that considerable processing quality can be obtained with femtosecond laser structuring.
Keywords
femtosecond laser processing, functional surface, biopolymers, bioceramics, tissue engineering, BONE, HYDROXYAPATITE, SCAFFOLDS, CHITOSAN, ZIRCONIA, COLLAGEN, NANOPARTICLES, BIOMATERIALS, GELATIN

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MLA
Daskalova, Albena et al. “Femtosecond Laser Fabrication of Engineered Functional Surfaces Based on Biodegradable Polymer and Biopolymer/ceramic Composite Thin Films.” POLYMERS 11.2 (2019): n. pag. Print.
APA
Daskalova, Albena, Bliznakova, I., Angelova, L., Trifonov, A., Declercq, H., & Buchvarov, I. (2019). Femtosecond laser fabrication of engineered functional surfaces based on biodegradable polymer and biopolymer/ceramic composite thin films. POLYMERS, 11(2).
Chicago author-date
Daskalova, Albena, Irina Bliznakova, Liliya Angelova, Anton Trifonov, Heidi Declercq, and Ivan Buchvarov. 2019. “Femtosecond Laser Fabrication of Engineered Functional Surfaces Based on Biodegradable Polymer and Biopolymer/ceramic Composite Thin Films.” Polymers 11 (2).
Chicago author-date (all authors)
Daskalova, Albena, Irina Bliznakova, Liliya Angelova, Anton Trifonov, Heidi Declercq, and Ivan Buchvarov. 2019. “Femtosecond Laser Fabrication of Engineered Functional Surfaces Based on Biodegradable Polymer and Biopolymer/ceramic Composite Thin Films.” Polymers 11 (2).
Vancouver
1.
Daskalova A, Bliznakova I, Angelova L, Trifonov A, Declercq H, Buchvarov I. Femtosecond laser fabrication of engineered functional surfaces based on biodegradable polymer and biopolymer/ceramic composite thin films. POLYMERS. 2019;11(2).
IEEE
[1]
A. Daskalova, I. Bliznakova, L. Angelova, A. Trifonov, H. Declercq, and I. Buchvarov, “Femtosecond laser fabrication of engineered functional surfaces based on biodegradable polymer and biopolymer/ceramic composite thin films,” POLYMERS, vol. 11, no. 2, 2019.
@article{8613521,
  abstract     = {Surface functionalization introduced by precisely-defined surface structures depended on the surface texture and quality. Laser treatment is an advanced, non-contact technique for improving the biomaterials surface characteristics. In this study, femtosecond laser modification was applied to fabricate diverse structures on biodegradable polymer thin films and their ceramic blends. The influences of key laser processing parameters like laser energy and a number of applied laser pulses (N) over laser-treated surfaces were investigated. The modification of surface roughness was determined by atomic force microscopy (AFM). The surface roughness (R-rms) increased from approximately 0.5 to nearly 3 mu m. The roughness changed with increasing laser energy and a number of applied laser pulses (N). The induced morphologies with different laser parameters were compared via Scanning electron microscopy (SEM) and confocal microscopy analysis. The chemical composition of exposed surfaces was examined by FTIR, X-ray photoelectron spectroscopy (XPS), and XRD analysis. This work illustrates the capacity of the laser microstructuring method for surface functionalization with possible applications in improvement of cellular attachment and orientation. Cells exhibited an extended shape along laser-modified surface zones compared to non-structured areas and demonstrated parallel alignment to the created structures. We examined laser-material interaction, microstructural outgrowth, and surface-treatment effect. By comparing the experimental results, it can be summarized that considerable processing quality can be obtained with femtosecond laser structuring.},
  articleno    = {378},
  author       = {Daskalova, Albena and Bliznakova, Irina and Angelova, Liliya and Trifonov, Anton and Declercq, Heidi and Buchvarov, Ivan},
  issn         = {2073-4360},
  journal      = {POLYMERS},
  keywords     = {femtosecond laser processing,functional surface,biopolymers,bioceramics,tissue engineering,BONE,HYDROXYAPATITE,SCAFFOLDS,CHITOSAN,ZIRCONIA,COLLAGEN,NANOPARTICLES,BIOMATERIALS,GELATIN},
  language     = {eng},
  number       = {2},
  pages        = {21},
  title        = {Femtosecond laser fabrication of engineered functional surfaces based on biodegradable polymer and biopolymer/ceramic composite thin films},
  url          = {http://dx.doi.org/10.3390/polym11020378},
  volume       = {11},
  year         = {2019},
}

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