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The interaction of proteins with silver nanoparticles (AgNPs) is of primary importance to uncover silver antimicrobial efficiency and environmental hazard. This interaction can affect silver reactivity, bioavailability and, eventually, silver toxicity towards the environmental media. Detection of the interaction of DsRed fluorescent proteins with AgNPs embedded in thin silica layers is demonstrated...
The novel features, based on the exposure of a higher number of atoms on the surfaces, allow nanomaterials to exhibit new or improved features to consumer products, that should be carefully assessed. Here is presented a new method based on the use of biosensors (algal cells) to assess the release of dissolved silver from nanoparticles. Algae were exposed to a) differently coated nanoparticles, b)...
In this work we review the development of ion beam modified silicon nitride charge trap memories. Silicon low energy (typically ~1 keV) ion implantation into silicon oxide/nitride dielectric stacks may lead to two different memory structures depending on the post implantation processing steps. Annealing at 950 °C for 30 min in inert ambient of the implanted oxide/nitride stacks leads to the formation...
This work reports the electroluminescence from carbon-and silicon-rich silicon oxide layers under continuous wave and pulsed excitation. The films were fabricated by Si and C ion implantation at low energy in 40 nm thick SiO2, followed by annealing at 1100degC. In continuous wave excitation, white electroluminescence has been observed. Structural and optical studies allow assigning it to Si nanocrystals...
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