Please use this identifier to cite or link to this item: doi:10.22028/D291-43351
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Title: Surface Modification of Brass via Ultrashort Pulsed Direct Laser Interference Patterning and Its Effect on Bacteria-Substrate Interaction
Author(s): Ahmed, Aisha Saddiqa
Müller, Daniel Wyn
Bruyere, Stephanie
Holtsch, Anne
Müller, Frank
Barrirero, Jenifer
Brix, Kristina
Migot, Sylvie
Kautenburger, Ralf
Jacobs, Karin
Pierson, Jean-François
Mücklich, Frank
Language: English
Title: ACS Applied Materials & Interfaces
Volume: 15
Issue: 30
Pages: 36908-36921
Publisher/Platform: ACS
Year of Publication: 2023
Free key words: ultrashort pulsed direct laser interference patterning
femtosecond pulse duration
brass
zinc oxide
copper oxides
nanoscale chemical modification
nanoscale heat-affected zone
antibacterial
DDC notations: 500 Science
Publikation type: Journal Article
Abstract: In recent decades, antibiotic resistance has become a crucial challenge for human health. One potential solution to this problem is the use of antibacterial surfaces, i.e., copper and copper alloys. This study investigates the antibacterial properties of brass that underwent topographic surface functionalization via ultrashort pulsed direct laser interference patterning. Periodic line-like patterns in the scale range of single bacterial cells were created on brass with a 37% zinc content to enhance the contact area for rod-shaped Escherichia coli (E. coli). Although the topography facilitates attachment of bacteria to the surface, reduced killing rates for E. coli are observed. In parallel, a high-resolution methodical approach was employed to explore the impact of laser-induced topographical and chemical modifications on the antibacterial properties. The findings reveal the underlying role of the chemical modification concerning the antimicrobial efficiency of the Cu-based alloy within the superficial layers of a few hundred nanometers. Overall, this study provides valuable insight into the effect of alloy composition on targeted laser processing for antimicrobial Cu-surfaces, which facilitates the thorough development and optimization of the process concerning antimicrobial applications.
DOI of the first publication: 10.1021/acsami.3c04801
URL of the first publication: https://pubs.acs.org/doi/10.1021/acsami.3c04801
Link to this record: urn:nbn:de:bsz:291--ds-433514
hdl:20.500.11880/38884
http://dx.doi.org/10.22028/D291-43351
ISSN: 1944-8252
1944-8244
Date of registration: 5-Nov-2024
Description of the related object: Supporting Information
Related object: https://ndownloader.figstatic.com/files/41613240
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Chemie
NT - Materialwissenschaft und Werkstofftechnik
NT - Physik
Professorship: NT - Prof. Dr. Karin Jacobs
NT - Prof. Dr. Guido Kickelbick
NT - Prof. Dr. Frank Mücklich
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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