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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.

Spatial distribution of snow water equivalent across the Tuolumne River Basin from April 10 to June 1, 2013 as measured by NASA's Airborne Snow Observatory.

The novel small molecule compounds readily form nanofibers with strong antifungal capability.

As ice at the North Pole disappears at an alarming rate, some researchers are finding a link between that phenomenon and recent bouts of extreme weather. A new study suggests rapid warming in the Arctic may be altering weather patterns across the Northern Hemisphere, but skeptics say the case is far from proven.

An artist's concept of the heliospheric current sheet, which becomes more wavy when the sun's magnetic field flips.

The dissolution process of a crystalline structure in water is shown: two bonded SiO4 -- molecules dissolve (top left), a quartz crystal (top right) and the computer-simulated surface of a dissolving crystalline structure (below).

TUM researchers have demonstrated that semiconductor nanowires like the one shown here can act both as lasers, generating coherent pulses of light, and as waveguides, similar to optical fibers. Because these nanowire lasers emit light at technologically useful wavelengths, can be grown on silicon substrates, and operate at room temperature, they have potential for applications in computing,

Three mass spectrometers built at Goddard were operating on the same day at the moon, on Mars and en route to Mars.

Three mass spectrometers built at Goddard were operating on the same day at the moon, on Mars and en route to Mars.