All Stories by Peter Weiss
- 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.
- Tech
DNA embrace might drive micromachines
DNA interactions that bend tiny diving boards, or cantilevers, may open the door to powering micromachines by means of molecular reactions.
- Tech
Beads and glue defeat forgers
Researchers have devised a cheap, translucent material that, when embedded in credit cards and other items, would endow the items with unique identifiers that are almost impossible to tamper with or copy.
- Tech
Microdevice weds electronics, light fibers
By altering the chemical structures of dyelike molecules called chromophores, researchers have created tiny, low-voltage devices for converting electronic signals into light waves.
- 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.
- Tech
Liquid Logic: Tiny plumbing networks concoct and compute
By incorporating thousands of simple valves into microscopic networks of rubbery pipes and chambers, scientists have created fluid-manipulating microchips of unprecedented power.
- Tech
Coming soon: Knavish electromagnetic acts
Scientists have created a device with bizarre electromagnetic properties—but so far, only at microwave frequencies.
- Tech
Looking for Mr. Goodoxide
The impending collapse of a 40-year union between the electronic wonder materials silicon and silicon dioxide threatens the advance of chip technology and propels a high-stakes search for silicon dioxide replacements.
- 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.
- Physics
Photon-in-a-box slings atom into orbit
A single photon confined to a tiny, mirror-lined cavity becomes electrically strong enough to swing an atom in loops.
- Physics
Soft crystal shows off its many new facets
Experiments with a liquid crystal may confirm the 50-year-old prediction that a nearly unlimited number of facets of different orientations can simultaneously decorate a crystal surface.
