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doi:10.22028/D291-43351
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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