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Purifying nanotubes

Metallic single-walled carbon nanotubes (SWNTs) can be selectively etched and eliminated from a substrate without damaging their semiconducting SWNT neighbors.

Posted: Nov 13th, 2006

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New survey of nanotechnology practices for workplace safety

The first comprehensive, international survey of workplace safety practices in the burgeoning nanotechnology industry finds that many nanotech companies and laboratories believe nanoparticles may pose specific environmental and health risks for workers.

Posted: Nov 13th, 2006

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Polymer coating improves tumor-targeting nanoparticles

Adding a thin coating of the biocompatible polymer poly(ethylene glycol) (PEG) to the surface of sulfur-modified, or thiolated, nanoparticles designed to fall apart inside tumors, prolongs the time that the resulting nanoparticles remain in tumors.

Posted: Nov 13th, 2006

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Nanorust cleans arsenic from drinking water

The discovery of unexpected magnetic interactions between ultrasmall specks of rust is leading scientists to develop a revolutionary, low-cost technology for cleaning arsenic from drinking water.

Posted: Nov 9th, 2006

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