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Stability of Ag nanoparticles dispersed in amphiphilic organic matrix

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Microstructure of Cu-Ag Uniform Nanoparticulate Films on Polyurethane 3D Catheters: Surface Properties

César Pulgarin, Juan Kiwi, Sami Rtimi, Rosendo Sanjines

The preparation, characterization, and antibacterial testing of Cu-Ag sputtered polyurethane (PU) catheters are addressed in this study. PU catheters with different atomic ratios Cu:Ag have been sputtered and led to different optical properties as followed ...

Amer Chemical Soc2016

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Comprehensive scanning transmission electron microscopy (STEM) analysis of Li4Ti5O12 (LTO) powder modified by deposited Ag nanoparticles was performed. Nanocomposite powders with Ag content of 1 wt.%, 4 wt.%, 10 wt.% were fabricated in a chemical process f ...

Wiley-Blackwell2016

To understand conditions affecting bioavailability and toxicity of citrate-coated silver nanoparticles (cit-AgNP) and dissolved silver at the luminal enterocyte interface, we exposed rainbow trout (Oncorhynchus mykiss) gut cells (RTgutGC) in media of contr ...

Taylor & Francis Ltd2016

Order/Disorder Dynamics in a Dodecanethiol-Capped Gold Nanoparticles Supracrystal by Small-Angle Ultrafast Electron Diffraction

Francesco Stellacci, Fabrizio Carbone, Giulia Fulvia Mancini, Tatiana Latychevskaia, Javier Reguera Gomez, Francesco Pennacchio

The design and the characterization of functionalized gold nanoparticles supracrystals require atomically resolved information on both the metallic core and the external organic ligand shell. At present, there is no known approach to characterize simultane ...

American Chemical Society2016

Dispersed Ag nanoparticles were prepared in aqueous solutions in the presence of pure poly[2-(dimethylamino)ethyl methacrylate] (poly-DMAEMA), poly[2-deoxy-2-methacrylamido-d-glucose] (poly-MAG), and their copolymers of poly[MAG–DMAEMA] with different mole ...

Springer Verlag2015

Microstructural characterization of Inconel 718 superalloy after three different heat treatment variants was performed by electron microscopy and electron tomography techniques, taking advantage of recent development in quantitative electron microscopy. Di ...

Elsevier Science Inc2015

Silver nanoparticles constitute a very promising approach for the development of new antimicrobial systems. Nanoparticulate objects can bring significant improvements in the antibacterial activity of this element, through specific effect such as an adsorpt ...

Elsevier2015

Critical influence of chloride ions on silver ion-mediated acute toxicity of silver nanoparticles to zebrafish embryos

Kristin Schirmer, Renata Behra

The toxicity of silver nanoparticles (AgNP) to aquatic organisms, including zebrafish (Danio rerio), has been demonstrated, but differing opinions exist on the contribution of the physical properties of the particles themselves and the free dissolved silve ...

Informa Healthcare2015

Silver nanoparticle toxicity and association with the alga Euglena gracilis

Kristin Schirmer, Laura Sigg, Renata Behra, Xiaomei Li, Laetitia Bernard

The impact of silver nanoparticles (AgNPs) on aquatic algae has largely been studied with model species that possess a rigid cell wall. Here, we explored the interactions of AgNPs with Euglena gracilis, a green alga having no cell wall but a pellicle. The ...

Royal Soc Chemistry2015

Nucleation of Silicon Nanoparticles in Amorphous Silicon Dioxide Matrices

Simone Meloni

In this contribution I summarize our research on the formation of nanoparticles embedded in a-SiO2-x matrices. In particular, I focus on the Si diffusion in SiO2-x matrices, and amorphous-to-crystalline phase transition in Si nanoparticles embedded in SiO2 ...

Amer Inst Physics2014