Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume 364, Issue -, Pages 98-107Publisher
ELSEVIER
DOI: 10.1016/j.nimb.2015.08.093
Keywords
Extreme ultraviolet; PTFE surface modification; Surface patterning
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Funding
- Science Foundation Ireland (SFI) [12/IA/1576]
- EU FP7 Erasmus Mundus Joint Doctorate Program EXTATIC [FPA-2012-0033]
- 7th Framework Programme's Laserlab Europe project [284464]
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Extreme ultraviolet (EUV) surface modification of polytetrafluoroethylene (PTFE) was performed in order to enhance the degree of biocompatibility. Polymer samples were irradiated by different number of EUV shots using a laser plasma based EUV source in the presence of nitrogen gas. The physical and chemical properties of EUV modified PTFE samples were studied using Atomic Force Microscopy, X-ray photoelectron spectroscopy and water contact angle (WCA) methods. Pronounced wall type micro and nano-structures appeared on the EUV treated polymer surfaces resulting in increased surface roughness and hydrophobicity. Stronger cell adhesion and good cell morphology were observed on EUV modified surfaces by in-vitro cell culture studies performed using L929 fibroblasts. (C) 2015 Elsevier B.V. All rights reserved.
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