Tech
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Matrix Realized
Devices called brain-computer interfaces could give paralyzed patients the ability to flex mechanical limbs, steer a motorized wheelchair, or operate robots through sheer brainpower.
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Micro Musclebot: Wee walker moves by heart cells’ beats
A new breed of mobile micromachine made of living heart tissue, gold, and silicon takes a step with each rhythmic contraction of its muscle cells.
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Frankenstein’s Chips
As evidence mounts that drug-safety trials can miss dangerous effects, scientists are building living, miniature models of animals and people to enhance drug and chemical tests.
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Magnetic Bit Boost: Quantum rewiring for computer memories
A quantum-mechanical memory component that might replace electronic computer memories has come closer to practicality.
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Ink-jet dots form transistor spots
A new technique makes ink-jet printing of transistor circuits possible from conductive polymer inks.
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Lighthearted Transistor: Electronic workhorse moonlights as laser
A versatile new transistor amplifies electricity and emits a laser beam.
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Smashing the Microscope: Tiny crashes harnessed for nanoconstruction
A new technique supplies loose atoms for nanoscale experiments by using the tip of a scanning tunneling microscope to gouge out craters from a surface.
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Laser Landmark: Silicon device spans technology gap
By coaxing a silicon microstructure into acting as a laser, engineers have achieved a long-sought and important step toward microchips capable of simultaneously manipulating electrons and light.
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Wee wires that can crawl
Self-propelled strands of a muscle protein coated with gold offer a way to arrange and control the nanoworld.
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Tracing the origin of Genesis’ crash
The upside-down installation of four switches intended to signal the Genesis spacecraft to open its parachutes is the likely cause of the craft's crash in the Utah desert on Sept. 8.
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Tiny tubes could ease eavesdropping
A team of researchers is developing highly sensitive acoustic sensors using ordered arrays of carbon nanotubes, which act much like the rodlike stereocilia of the inner ear.
