Gold Nanoparticles Quickly Detect Hazardous Chemicals

ScienceDaily (Nov. 20, 2012) — Scientists at Imperial College London have developed a system to quickly detect trace amounts of chemicals like pollutants, explosives or illegal drugs.

The new system can pick out a single target molecule from 10,000 trillion water molecules within milliseconds, by trapping it on a self-assembling single layer of gold nanoparticles.

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