Light can trigger coordinated, wavelike motions of atoms in atom-thin layers of crystal, scientists have shown. The waves, called phonon polaritons, are far shorter than light waves and can be “tuned” to particular frequencies and amplitudes by varying the number of layers of crystal, they report in the early online edition of Science March 7.
After all the work they put into the online course they inaugurated in the fall, Pavel Pevzner, a professor of computer science and engineering, and instructors Phillip Compeau and Nikolay Vyahhi have concrete evidence that it was a success even beyond the impressive number of people who signed up for the course – more than 30,000 in all.
A year ago the Explorers Club recognized director James Cameron with its coveted Explorers Medal during its annual dinner in New York City. The organization honored the famed director not for movie making but for his historic dive to the deepest point on the planet, an expedition in which Cameron relied heavily on the scientific and engineering expertise at Scripps Institution of Oceanography at UC San Diego.
The surface of the sea takes up nitrogen oxides that build up in polluted air at night, new measurements on the coast of southern California have shown. The ocean removes about 15 percent of these chemicals overnight along the coast, a team of atmospheric chemists reports in the early online edition of the Proceedings of the National Academy of Sciences the week of March 3.
A team of computer scientists at the University of California, San Diego, has taken an unprecedented, in-depth look at how malware operators use the computers they infect to mine Bitcoin, a virtual currency whose value is highly volatile.
As part of the annual Kyoto Prize Symposium, world-renowned evolutionary biologist Masatoshi Nei, Ph.D., will speak at the University of California, San Diego on March 18 at 3:30 p.m. in the Price Center West Ballroom on campus.
The retreat of sea ice in the Arctic Ocean is diminishing Earth’s albedo, or reflectivity, by an amount considerably larger than previously estimated, according to researchers at UC San Diego’s Scripps Institution of Oceanography.
The deep ocean, the largest domain for life on earth, is also its least explored environment. Humans are now encroaching more vigorously than ever into the ocean’s deep regions, exploiting the deep’s resources and placing its wealth of vibrant habitats and natural services for the planet at risk.
Researchers at the San Diego Supercomputer Center at the University of California, San Diego, have developed software that greatly expands the types of multi-scale QM/MM (mixed quantum and molecular mechanical) simulations of complex chemical systems that scientists can use to design new drugs, better chemicals, or improved enzymes for biofuels production.
Astronomers see huge clouds of gas orbiting supermassive black holes at the centers of galaxies. Once thought to be a relatively uniform, fog-like ring, the accreting matter instead forms clumps dense enough to intermittently dim the intense radiation blazing forth as these enormous objects condense and consume matter, they report in a paper to be published in the Monthly Notices of the Royal Astronomical Society, available online now.