Physics
- Materials Science
Fridge Magnets and Chemistry
Theres a tiger on your fridge! Lurking inside refrigerator magnets of the flat, flexible variety are magnetic-field stripes of alternating polarity. This University of Wisconsin Web site explains how fridge magnets work, shows how you can use such magnets to learn about magnetic force microscopy, and suggests experiments involving fridge magnets to model how metals […]
- Materials Science
Rice hulls could nourish Silicon Valley
Scientists are developing ways to extract and purify the silicon that occurs naturally in rice hulls.
- Materials Science
Better-Built Diamonds: Fast growth, purity may multiply uses
A research group has fabricated the purest diamonds ever made or found, and another has devised a way to grow high-quality diamonds up to 100 times faster than typical growth rates.
- Physics
Electron spins pass imposing frontier
Electron spins crossed from one semiconductor to another with apparent ease and little or no mussing of their direction, suggesting that sandwiches of materials common in microcircuits are no obstacle to creating spin-information channels in future circuits.
- Physics
Glass may magnify ultrasmall-world oddities
A puzzling and unexpected response to magnetic fields suggests that certain glasses may exhibit a type of large-scale quantum mechanical behavior never seen before.
- Materials Science
Foamy polymers hit goal right on the nose
Biodegradable polymer foams made with a new technique can act as scaffolds for regenerating tissues that may someday be used as replacement body parts.
- Physics
Bitty Beacon: Wee disks probe materials at microscales
Illuminated by lasers, disks no larger than red blood cells can project rotating beams bright enough to create a light show in a darkened room.
- Physics
Superconductor has odd electron pairing
Although electrons pair up in many superconductors, there's one in which they join together in two different ways, new calculations confirm.
- Physics
Clues to exotic particles found again
Although a correction to theory last year watered down its results, further analysis of a muon experiment still provides hints of new subatomic particles.
- Materials Science
What the mail must go through
Mail irradiation in Washington, D.C. is damaging valuable objects and documents intended for scientific study or archiving at the Smithsonian, the White House, and other government organizations.
- Physics
Manhandled molecules, midget memories
A thick coating of organic chemicals can record information at densities potentially a million times greater than is possible with current compact disk technology.
- Materials Science
A Cut above the Ordinary: Low-tech machining yields coveted nanostructure
A new finding that machining of metals imparts a hard, fine-grained structure to turnings and other scraps may lead to less costly but more durable parts for cars and other applications.
