Authors: Baker C.; Pradhan A.; Pakstis L.; Pochan Darrin J.; Shah S. Ismat

Source: Journal of Nanoscience and Nanotechnology, Volume 5, Number 2, February 2005 , pp. 244-249(6)

Publisher: American Scientific Publishers

Abstract:

Nanometer sized silver particles were synthesized by inert gas condensation and co-condensation techniques. Both techniques are based on the evaporation of a metal into an inert atmosphere with the subsequent cooling for the nucleation and growth of the nanoparticles. The antibacterial efficiency of the nanoparticles was investigated by introducing the particles into a media containing Escherichia coli. The antibacterial investigations were performed in solution and on petri dishes. The silver nanoparticles were found to exhibit antibacterial effects at low concentrations. The antibacterial properties were related to the total surface area of the nanoparticles. Smaller particles with a larger surface to volume ratio provided a more efficient means for antibacterial activity. The nanoparticles were found to be completely cytotoxic to E. coli for surface concentrations as low as 8 g of Ag/cm².

Keywords: SILVER NANOPARTICLES; ANTIBACTERIAL; SYNTHESIS; GAS CONDENSATION

Document Type: Research article

DOI: http://dx.doi.org/10.1166/jnn.2005.034

Publication date: 2005-02-01

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• Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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