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Visualization of gold nanoparticle self-assembly via TEM

The self-assembly of gold nanoparticles coated with specific organic ions in water was observed by researchers using in-situ transmission electron microscopy equipped with a liquid cell. The Au NPs formed one-dimensional chains within a few minutes.

Mar 13th, 2013

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Biological nanowires carry electricity thanks to special amino acids

In nature, the bacterium Geobacter sulfurreducens uses these nanowires, called pili, to transport electrons to remote iron particles or other microbes, but the benefits of these wires can also be harnessed by humans for use in fuel cells or bioelectronics. A new study reveals that a core of aromatic amino acids are required to turn these hair-like appendages into functioning electron-carrying biological wires.

Mar 12th, 2013

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