1. Materials Science

    Impurity clouds from all sides now

    For the first time, scientists have obtained detailed, three-dimensional images of line defects in steel.

  2. Materials Science

    Small-scale glues stick to surfaces

    Tailored molecular glues can connect together tiny particles for nanotechnology applications.

  3. Physics

    Time’s arrow may make U-turns in universe

    Time may run backwards for isolated chunks of matter in our universe and that reversed state could be probed gently from the forward-going realm without disturbing the time arrow.

  4. Physics

    Computers Crunch Quantum Collisions

    Physicists have mathematically described what happens when an electron collides with a hydrogen atom, accomplishing a longstanding goal.

  5. Physics

    Loud Loop: New explanation of whip-snapping unfurls

    The wake of a loop zooming along a whip may silence the faster-moving tip so the loop actually causes the whip's loud bang.

  6. Physics

    Atom laser gets a full tank

    A method to refill Bose-Einstein condensates—ultracold clouds of atoms all in the same quantum state—may soon make possible the first atom lasers that can shoot a stream of condensate atoms indefinitely.

  7. Materials Science

    Beyond Jell-O: New ideas gel in the lab

    Researchers have created a new class of hydrogels that might prove useful in tissue engineering, drug delivery, and other biomedical applications.

  8. Physics

    Tiny tungsten beams lord over light

    By filtering radiated heat, a novel microstructure of crisscrossed tungsten beams promises to improve the efficiency of light bulbs and of heat-to-electricity conversion devices.

  9. Physics

    Unexpected Boost: A superconductivity killer’s silver lining

    Among superconductors—materials able to conduct electricity without resistance—an effect that normally diminishes current-carrying ability surprisingly turns out to sometimes enhance it.

  10. Physics

    Detector spots solar chameleons

    A new measurement of the sun's emission of ghostly neutrinos indicates that the prevailing theory of particle physics needs repair.

  11. Physics

    Fluid Beauty

  12. Physics

    Not-So-Neutral Neutron: Clearer view of neutron reveals charged locales

    A sharp, new picture of the neutron reveals that rather than being uniformly electrically neutral, the particle contains regions of positive and negative charge.