ScienceDaily: Top Technology News |
- Nanoparticle electrode for batteries could make grid-scale power storage feasible
- Physicists set strongest limit on mass of dark matter
- Tiny levers, big moves in piezoelectric sensors
- Insect cyborgs may become first responders: Search and monitor hazardous places
| Nanoparticle electrode for batteries could make grid-scale power storage feasible Posted: 23 Nov 2011 12:19 PM PST Researchers have used nanoparticles of a copper compound to develop a high-power battery electrode that is so inexpensive to make, so efficient and so durable that it could be used to build batteries big enough for economical large-scale energy storage on the electrical grid -- something researchers have sought for years.  |
| Physicists set strongest limit on mass of dark matter Posted: 23 Nov 2011 10:36 AM PST Physicists have set the strongest limit for the mass of dark matter, the mysterious particles believed to make up nearly a quarter of the universe. The researchers report that dark matter must have a mass greater than 40 giga-electron volts. The distinction is important because it casts doubt on recent results from underground experiments that have reported detecting dark matter.  |
| Tiny levers, big moves in piezoelectric sensors Posted: 23 Nov 2011 10:35 AM PST Scientists have succeeded in integrating a new, highly efficient piezoelectric material into a silicon microelectromechanical system. This development could lead to significant advances in sensing, imaging, and energy harvesting.  |
| Insect cyborgs may become first responders: Search and monitor hazardous places Posted: 23 Nov 2011 10:35 AM PST New developments may lead to insects monitoring hazardous situations before humans are sent in. The principal idea is to harvest the insect's biological energy from either its body heat or movements. The device converts the kinetic energy from wing movements of the insect into electricity, thus prolonging the battery life. The battery can be used to power small sensors implanted on the insect (such as a small camera, a microphone or a gas sensor) in order to gather vital information from hazardous environments.  |
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