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Your search has returned 893 articles:
  • News in Brief

    This stick-on patch could keep tabs on stroke patients at home

    AUSTIN, Texas — Stretchy sensors that stick to the throat could track the long-term recovery of stroke survivors.

    These new Band-Aid‒shaped devices contain motion sensors that detect muscle movement and vocal cord vibrations. That sensor data could help doctors diagnose and monitor the effectiveness of certain treatments for post-stroke conditions like difficulty swallowing or talking,...

    02/17/2018 - 16:00 Technology, Health, Biophysics
  • 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
  • Teaser

    Smart windows could block brightness and harness light

    Who needs curtains? One day, you could block out afternoon glare and heat with changeable windows that absorb sunshine to charge your electronics.

    A high-tech prototype panel described online January 22 in Nature Materials, switches between transparent pane and dark-tinted solar cell. The layer in the panel that’s responsible for soaking up sun has atoms that only arrange themselves into...

    02/08/2018 - 09:00 Materials, Technology
  • 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
  • News in Brief

    Superdense wood is lightweight, but strong as steel

    View the video

    Newly fabricated superstrong lumber gives a whole new meaning to “hardwood.”

    This ultracompact wood, described in the Feb. 8 Nature, is created by boiling a wood block in a water-based solution of sodium hydroxide and sodium sulfite. The chemicals partially strip the wood of substances called lignin and hemicellulose, which help give wood its structure...

    02/07/2018 - 13:00 Materials, Technology
  • Teaser

    New textile weathers temperature shift

    Weather changes, but thanks to a new high-tech textile, someday you may not have to switch out your outfit.

    Materials scientists and engineers at Stanford University have developed a multilayered textile that traps body heat on one side and passively radiates heat away from the body when flipped inside out. The material kept artificial skin within a comfortable range of 32° to 36°...

    02/02/2018 - 11:27 Materials, Technology, Chemistry
  • 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

    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
  • Feature

    Your phone is like a spy in your pocket

    Consider everything your smartphone has done for you today. Counted your steps? Deposited a check? Transcribed notes? Navigated you somewhere new?

    Smartphones make for such versatile pocket assistants because they’re equipped with a suite of sensors, including some we may never think — or even know — about, sensing, for example, light, humidity, pressure and temperature.

    Because...

    01/23/2018 - 12:00 Computing, Technology
  • News

    New technique could help spot snooping drones

    Now there’s a way to tell if a drone is spying on someone.

    Researchers have devised a method to tell what a drone is recording — without having to decrypt the video data that the device streams to the pilot’s smartphone. This technique, described January 9 at arXiv.org, could help military bases detect unwanted surveillance and civilians protect their privacy as more commercial drones...

    01/23/2018 - 07:00 Technology, Science & Society