Physics
- Physics
Cooled device unveils a quantum limit
A novel suspended device chilled near absolute zero demonstrates the existence of a basic unit, or quantum, of heat conductance—the first evidence of quantum mechanics in mechanical structures.
- Materials Science
Molecular Separations: New artificial sieve traps molecules
Researchers have created a metal-laced organic solid that acts as a sieve with nanosize pores for capturing molecules.
- Physics
Prize honors physicist with conscience
Physicist-author Freeman J. Dyson received the Templeton prize for originality in advancing religious understanding.
- Physics
Four ions mingle in quantum chorus
A new way to produce mysterious quantum correlations among particles ups the record to four particles linked, or entangled, and opens the door to correlating many more particles on cue, a prerequisite for making quantum computers.
- Materials Science
Carbon nanotubes do some bonding
Researchers have welded together carbon nanotubes to make junctions that could be useful in the construction of tiny electronic devices.
- Physics
Interacting with Physics
Drag an electric charge to see how it affects a nearby water molecule. Fool around with a laser to cool an atom. The University of Colorado’s Physics 2000 Web site relies heavily on interactive animations to demonstrate important concepts and discoveries in modern physics. Topics range from X rays and CAT scans to the quantum […]
- Physics
Nanotubes get into gear for new roll
Atoms on the surface of carbon nanotubes appear to mesh when tubes roll across a graphite surface, making the tubes possible atomic-scale gears, which have been long-sought in nanotechnology.
- Physics
Devilish polygons speak of past stress
A new theory and a simple test with cornstarch and water may help explain the polygonal geometry of rock columns in the Devil's Postpile in California and elsewhere.
- Materials Science
Bigger, Cheaper, Safer Batteries: New material charges up lithium-ion battery work
A new material could make rechargeable lithium-ion batteries smaller, cheaper, and safer.
- Materials Science
The Buck Starts Here
The U.S. Mint performed some neat tricks to make a golden dollar.
- Materials Science
Materials with Memory
Metal alloys and polymers that can remember a preprogrammed shape may literally reshape technologies ranging from warfare to medicine and car repair.
- Physics
Neon gives healthy glow to reactor
Preferring neon to nicotine, magnetic-fusion reactors called tokamaks get a performance boost from puffs of the noble gas.
