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Physics and Matter News - September 2007 Archives
A particular class of hydrogen atoms may prove ideal for the study of one of the four fundamental forces of physics.
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 | Researchers have used molecular vibrations, triggered by ultrafast pulses of terahertz radiation, to change a manganite crystal from an electrical insulator into a conductor. The ability to induce dramatic phase-changes in solid materials through select vibrations holds great promise for future exploitation of prized technological phenomena such as superconductivity and magnetoresistance. ...> Full Article |
 | By placing quantum dots on a specially designed photonic crystal, researchers have demonstrated enhanced fluorescence intensity by a factor of up to 108. Potential applications include high-brightness light-emitting diodes, optical switches and personalized, high-sensitivity biosensors. ...> Full Article |
 | What is the sound of rough? That might seem like a question for armchair philosophers, but a engineering professor's answer has garnered him kudos and a substantial funding commitment from NSERC. ...> Full Article |
For two generations of physicists, it has been a standard belief that the neutron, an electrically neutral elementary particle and a primary component of an atom, actually carries a positive charge at its center and an offsetting negative charge at its outer edge.
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 | Scientists work on particle accelerators in much the same way that horsepower junkies work on muscle cars. Although their research doesn't involve turbochargers, stall torque converters or cat back exhaust systems, they obsesses over the power of their machine. ...> Full Article |
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