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E.g., 02/21/2018
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  • 2-D material illustration
  • periodic table
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Your search has returned 873 articles:
  • News

    New technique shows how 2-D thin films take the heat

    High-energy particle beams can reveal how 2-D thin sheets behave when the heat is cranked up.

    Researchers have devised a way to track how these materials, such as the supermaterial graphene, expand or contract as temperatures rise (SN: 10/3/15, p. 7). This technique, described in the Feb. 2 Physical Review Letters, showed that 2-D semiconductors arranged in single-atom-thick sheets...

    02/13/2018 - 11:26 Materials, Physics, Technology
  • News

    5 ways the heaviest element on the periodic table is really bizarre

    The first 117 elements on the periodic table were relatively normal. Then along came element 118.

    Oganesson, named for Russian physicist Yuri Oganessian (SN: 1/21/17, p. 16), is the heaviest element currently on the periodic table, weighing in with a huge atomic mass of about 300. Only a few atoms of the synthetic element have ever been created, each of which survived for less than a...

    02/12/2018 - 09:00 Physics, Chemistry
  • 50 years on, nuclear fusion still hasn’t delivered clean energy

    Power within 30 years

    Controlled thermonuclear fusion is moving so well that full-scale development could begin within five years, says Dr. David J. Rose....It might take 20 to 30 years beyond that before fusion could move into the power grid, though, he predicts. — Science News, February 17, 1968

    Update

    Governments and private-sector start-ups are still trying to wrangle...

    02/08/2018 - 07:00 Physics, Technology, Science & Society
  • Letters to the Editor

    Readers ask about supernovas, dark energy and more

    Dying light

    Supernova iPTF14hls has erupted continually since its discovery in 2014, fluctuating in brightness at least five times. It may have had two other outbursts in the past, Lisa Grossman reported in “This star cheated death, exploding again and again” (SN: 12/9/17, p. 8).

    Reddit user Bobgushmore wondered if the exploding star might actually be a supernova impostor similar to...

    02/07/2018 - 15:30 Astronomy, Physics, Science & Society
  • Feature

    Skyrmions open a door to next-level data storage

    Like sailors and spelunkers, physicists know the power of a sturdy knot.

    Some physicists have tied their hopes for a new generation of data storage to minuscule knotlike structures called skyrmions, which can form in magnetic materials. Incredibly tiny and tough to undo, magnetic skyrmions could help feed humankind’s hunger for ever-smaller electronics.

    On traditional hard drives,...

    02/07/2018 - 15:03 Materials, Physics
  • News

    Laser experiment hints at weird in-between ice

    A proposed form of ice acts like a cross between a solid and a liquid. Now, a new study strengthens the case that the weird state of matter really exists.

    Hints of the special phase, called superionic ice, appeared in water ice exposed to high pressures and temperatures, researchers report February 5 in Nature Physics. Although such unusual ice isn’t found naturally on Earth, it might...

    02/05/2018 - 11:00 Physics
  • News

    New laser emits a more stable, energy-efficient light beam

    A new type of laser is modeled after an exotic class of materials called topological insulators. And it’s proving more reliable and energy-efficient than its conventional counterparts, paving the way for possible use in quantum communication and next-generation electronics.

    The device, described online February 1 in Science, is composed of a grid of semiconductor rings that convert...

    02/01/2018 - 14:35 Technology, Physics, Materials
  • News

    Gravity doesn’t leak into large, hidden dimensions

    When it comes to the dimensions of spacetime, what you see may be what you get.

    Using observations from the collision of two neutron stars that made headlines in 2017 (SN: 11/11/17, p. 6), scientists found no evidence of gravity leaking into hidden dimensions. The number of observed large spatial dimensions — kilometer-scale or bigger — is still limited to the three we know and love, the...

    02/01/2018 - 12:30 Physics
  • News

    Lasers trace a new way to create hovering hologram-like images

    View the video

    The 3-D displays seen in such sci-fi movies as Star Wars may not be so far, far away.

    A new laser system renders full-color 3-D images in thin air, researchers report in the Jan. 25 Nature. This technology could someday make futuristic, free-floating visuals for everything from air traffic control to surgical planning.

    With this new technology, “you really can...

    01/24/2018 - 14:30 Technology, Physics
  • News in Brief

    The X-ray glow keeps growing after the recent neutron star collision

    More than 100 days after two neutron stars slammed together, merging into one, new telescope images have revealed that the collision’s lingering X-ray light show has gotten brighter. And scientists don’t fully understand why.

    NASA’s orbiting X-ray telescope, Chandra, previously picked up the X-rays 15 days after gravitational waves from the cataclysm reached Earth on August 17, 2017 (SN...

    01/24/2018 - 09:00 Astronomy, Physics