English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The influence of ultra-short laser modification on the surface morphology andpossible chemical alteration of poly-lactic acid (PLA) matrix in respect to theoptimization of cellular and antibacterial behavior were investigated in thisstudy. Scanning electron microscopy (SEM) morphological examination of theprocessed PLA surface showed the formation of diverse hierarchical surfacemicrostructures, generated by irradiation with a range of laser fluences (F)and scanning velocities (V) values. By controlling the laser parameters,diverse surface roughness can be achieved, thus influencing cellular dynamics.This surface feedback can be applied to finely tune and control diversebiomaterial surface properties like wettability, reflectivity, and biomimetics.The triggering of thermal effects, leading to the ejection of material withsubsequent solidification and formation of raised rims and 3D-like hollowstructures along the processed zones, demonstrated a direct correlation to thewettability of the PLA. A transition from superhydrophobic (thetha > 150 deg.)to super hydrophilic (thetha < 20 deg.) surfaces can be achieved by thecreation of grooves with V = 0.6 mm/s, F = 1.7 J/cm2. The achieved hierarchicalarchitecture affected morphology and thickness of the processed samples whichwere linked to the nature of ultra-short laser-material interaction effects,namely the precipitation of temperature distribution during material processingcan be strongly minimized with ultrashort pulses leading to non-thermal andspatially localized effects that can facilitate volume ablation withoutcollateral thermal damage.

polymers

Biomimetic Hierarchical Structuring of PLA by Ultra-Short Laser Pulses  for Processing of Tissue Engineered Matrices: Study of Cellular and  Antibacterial Behavior