Berlin 2024 – wissenschaftliches Programm
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BP: Fachverband Biologische Physik
BP 26: Biopolymers, Biomaterials and Bioinspired Functional Materials (joint session CPP/BP)
BP 26.3: Vortrag
Donnerstag, 21. März 2024, 10:15–10:30, H 0111
Exploring deposition conditions for antibacterial thin films via GISAXS measurements — •Joanne Neumann1,2, Maria J Garcia1,3, Holger Sondermann1,3, Matthias Schwartzkopf1, and Michael Martins2 — 1DESY, Photon Science, Notkestr. 85, D-22607 Hamburg — 2UHH, Physics Department, Luruper Chaussee 149, D-22607 Hamburg — 3CSSB, Center for Structural Systems Biology, Notkestr. 85, D-22607 Hamburg
During the last decades, the rate of multiresistant microbes against antibiotics increased dramatically. Moreover, biofilm-based contaminations complicate cleaning procedures and require cost-intensive methods in industrial processes. In this context, Pseudomonas aeruginosa (PA) is one of those bacteria that forms biofilms at liquid/air interfaces as a protective shell, e.g. against antibiotics. To investigate the influence of nanostructured silver layers as antibacterial coatings on the initial bacterial growth, we employed micro-focused Grazing incidence Small Angle X-ray Scattering (GISAXS) as a very surface-sensitive X-ray-based method providing structural information about electron density distributions. In our experiments we characterized PA biofilms, grown under different deposition conditions at the P03 beamline at Petra III / DESY.
Keywords: X-ray Scattering; surface-sensitive; biofilm; nanostructured silver layers; deposition conditions