Plasmons (IMAGE)

Rice University

Plasmons

Caption

The ability to sort carbon nanotubes by type through a process called "density gradient ultracentrifugation (DGU)" allowed Rice researchers to test purified batches of nanotubes to find the cause of terahertz peaks in spectroscopic experiments. They determined that free electrons formed plasmons that ripple at terahertz frequencies in metallic and doped nanotubes.

Credit

Kono Laboratory/Rice University

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