Researchers watch nanoparticles self-assemble for the very first time
2013-04-25 0:00

By George Dvorsky | io9

Its not quite the T-1000 pulling itself together after being blown apart, but its pretty much the same idea. For the first time in history, scientists have observed the self-assembly of nanoparticles in real-time.









Each of the particles seen in the video above measures a scant 12 nanometers across. To put that in perspective, youd have to divide the thin side of a dime by a thousand, and then take one of those slivers and divide it by a thousand again. Thats roughly one nanometer.

Thats mighty, mighty tiny so tiny in fact that the researchers at the U.S. Department of Energys (DOE) Argonne National Laboratory had to use a transmission electron microscope located at the Center for Nanoscale Materials to capture the quick movement of the nanoparticles.

To get the tiny bits to re-assemble, the researchers put the gold nanoparticles into a small liquid pouch and covered it with a positively charged coating. When it was exposed to an intense beam of electrons, an effect was created where hydrated electrons attracted the positively charged nanoparticles but it was an effect that was gradually reduced over time. Once freed from these forces, the nanoparticles were able to jump around and stick together in long chains.

[...]

Read the full article at: io9.com



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