Image of the Week - September 5, 2006

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Gold Nanoparticles on Magnetic Silica Spheres

SEM image of gold nanoparticles on magnetic silica spheres with an average diameter of 200 nm. The nanoparticles, 15 nm in diameter and negatively charged, attach to the surfaces of the magnetic silica spheres via electrostatic interaction due to positively charged polymer coating. Such particles have potential uses for MRI.

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Uploaded Tue Sep 5 07:54:09 2006 by Scott Jay Robinson

Updated Wed Feb 3 09:53:39 2010 by Daniel E. Weber