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Lecture

Functionalization of Antimicrobial Metallic Surfaces by Ultrashort Pulsed Laser Structuring

Tuesday (09.05.2017)
16:30 - 16:50
Part of:


The augmentation of antibiotic resistance in a

growing number of microbial strains is giving rise to a higher risk of

infection, as well as a more critical course of disease in many public

facilities, where a transfer takes place due to a deposition and receiving of germs

via contact areas. This impact is even bigger in hospitals where the amount of

exciters is higher and the potentially exposed victim is additionally enfeebled

by a primary disease. These nosocomial infections are causing up to 148.000

deaths in hospitals all over Europe each year.

 

To reduce the number of infections triggered by the

transportation and spreading especially of multiresistant germs (MRGs), the

potential route of transfer by contact areas has to be eliminated, which can be

done by the use of actively antimicrobial metallic materials like copper and

its alloys. An additional enhancement of the potential antimicrobial properties

was made by the modification of surface wettability by ultrashort pulsed Laser

structuring. Line patterns with different structural features were applied on

copper surfaces adapting the chemical as well as the topographical surface

properties. By this a significant reduction in wettability was achieved. This

modification can lead to a limited transfer of germs to the metallic surface

first-hand, while the topography itself enhances the contact area of adherent

germs to the substrate leading to a higher transfer of ions, leading to

contact-killing of the microbes.

 

 

Speaker:
Daniel Wyn Müller
Steinbeis-Forschungszentrum
Additional Authors:
  • Philipp Grützmacher
    Universität des Saarlandes
  • Prof. Dr.-Ing. Frank Mücklich
    Material Engineering Center Saarland - MECS
  • Univ.Prof. Dipl.-Ing. Dr.-Ing. Carsten Gachot
    Technische Universität Wien
  • Jiaqi Luo
    Universität des Saarlandes