Physics
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We summarize the week's scientific breakthroughs every Thursday.
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PhysicsIn a squeeze, nitrogen gets chunky
Remarkable already for being a semiconductor and, perhaps, an explosive, a new, solid form of nitrogen made by crushing the ordinary gas to the highest pressures ever also stands out because it continues to survive when the pressure is released.
By Peter Weiss -
PhysicsElectrons trip on tiny semiconductor steps
A first glimpse of how a semiconductor's surface alters electrons' magnetic fields, or spins, suggests that tiny steps in the surfaces are tripping up efforts to create so-called spintronics circuits from semiconductors.
By Peter Weiss -
Materials ScienceNanotubes form dense transistor array
Researchers have made an array of transistors out of carbon nanotubes.
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Materials ScienceFuture brightens for carbon nanotubes
Researchers have made a lightbulb that depends on carbon nanotubes for its glow.
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PhysicsLight shines in quantum-computing arena
A new computing scheme using available technology and only classical physics appears to handle many tasks that researchers thought would be unsuited to any computers except the still-hypothetical ones that would exploit quantum physics.
By Peter Weiss -
PhysicsDevice shifts molecules into slow motion
Unlike other particle accelerators, which manipulate the speed and energy of charged particles, a new device accelerates neutral molecules such as ammonia.
By Peter Weiss -
PhysicsLead blocks may catch nuclear killer
New measurements of neutron bursts from blocks of lead may help researchers solve a decades-old cosmic whodunit.
By Peter Weiss -
PhysicsMaybe this watched pot already boiled
Researchers smashing nuclei in hopes of producing a primordial state of matter called the quark-gluon plasma may have already made the stuff without realizing it.
By Peter Weiss -
PhysicsNew probe reveals unfamiliar inner proton
Researchers taking one of the closest looks yet into the intact proton have found an unexpectedly complex interior electromagnetic environment.
By Peter Weiss -
Materials ScienceInorganic tubes get smaller than ever
Researchers have created the smallest stable, freestanding inorganic nanotubes yet.
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Materials ScienceNovel nanotubes are now made-to-order
Researchers have made nanotubes with specific sizes and traits by designing molecules that self-assemble.
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PhysicsSurface reaction recorded in real time
Ultrafast laser pulses may have for the first time revealed the incredibly rapid, step-by-step progress of a complete chemical reaction on a surface, at the actual speed at which it took place.
By Peter Weiss