A bacterial misericorde: laser-generated silicon nanorazors with embedded biotoxic nanoparticles combat the formation of durable biofilmsстатья
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Дата последнего поиска статьи во внешних источниках: 23 декабря 2020 г.
Аннотация:A combined mechano- and chemo-bactericidal nanomorphology, consisting of periodical surface structures on silicon with deposited nanoparticles of selenium, tellurium oxide, antimony oxide and silver, was fabricated via laser ablation in deionized water with femto- and nanosecond laser systems. The resulting functional surfaces were tested against the formation of Staphylococcus aureus biofilms, and their morphology and elemental composition was characterized with scanning electron microscopy and energy-dispersive x-ray and Raman spectroscopy. Antibacterial properties were suggested to originate from the combined chemical toxicity of nanoparticles and the mechanical damage caused by the sharp nanoscale relief on silicon.