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I. KLEPS, M. MIU, M. DANILA, M. SIMION, T. IGNAT, A. BRAGARU, L. DUMITRU,
G. TEODOSIU
Investigation of Silver-, Meso- and Nanoporous Silicon Composite Layers for
Biomedical Applications
Abstract.
The study of
the porous silicon (PS) structures is important for
both fundamental understanding of nano-systems as well for its possible
applications. In this paper various Ag/PS based composite
layers were experimented in order to enlarge the PS applications, especially in
biomedical field. The Ag nanoparticles/silicon
nanocomposite layers as-deposited and thermal treated
were investigated by optical microscopy, X-ray diffraction,
and biological tests. Ag/PS layers can be used as a composite matrix for
microelement delivery with
application in
homeopathy. On the
other hand
Ag nanoparticles
on
nanocrystalline Si are important for their anti-microbial properties. In minute
concentrations, Ag is highly toxic to germs while relatively
non-toxic to human cells. Microbes are unlikely to
develop a resistance against silver, as they do
against conventional and highly targeted antibiotics. The experimental results
sustain the Ag/Si nanocomposite structures as anti-microbial
matrix.
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