ScienceDaily: Top Technology News |
- Smarter materials: Self-powered, homeostatic nanomaterial actively self-regulates in response to environmental change
- Development of 'Slater insulator' that rapidly changes from conductor to insulator at room temperature
- One step closer to new kind of thermoelectric 'heat engine'
- Hubble discovers a fifth moon orbiting Pluto
- Titanian seasons turn, turn, turn: Atmospheric changes on Saturn's moon
- Making 'Renewable' viable: New technology for grid-level electrical energy storage developed
- Nanodevice builds electricity from tiny pieces
- Dark galaxies of the early universe spotted for the first time
- Silver nanoparticle synthesis using strawberry tree leaf
| Posted: 11 Jul 2012 11:19 AM PDT Living organisms have developed sophisticated ways to maintain stability in a changing environment. The integration of similar features in artificial materials, however, has remained a challenge. In a new study, engineers present a strategy for building self-thermoregulating nanomaterials that can, in principle, be tailored to maintain a set pH, pressure, or just about any other desired parameter by meeting the environmental changes with a compensatory chemical feedback response.  |
| Posted: 11 Jul 2012 10:45 AM PDT Scientists have succeeded in developing a Slater insulator which functions at room temperature.  |
| One step closer to new kind of thermoelectric 'heat engine' Posted: 11 Jul 2012 10:09 AM PDT Researchers who are studying a new magnetic effect that converts heat to electricity have discovered how to amplify it a thousand times over -- a first step in making the technology more practical.  |
| Hubble discovers a fifth moon orbiting Pluto Posted: 11 Jul 2012 09:30 AM PDT A team of astronomers using NASA's Hubble Space Telescope is reporting the discovery of another moon orbiting the icy dwarf planet Pluto. The moon is estimated to be irregular in shape and 6 to 15 miles across. It is in a 58,000-mile-diameter circular orbit around Pluto that is assumed to be co-planar with the other satellites in the system.  |
| Titanian seasons turn, turn, turn: Atmospheric changes on Saturn's moon Posted: 11 Jul 2012 08:38 AM PDT Images from NASA's Cassini spacecraft show a concentration of high-altitude haze and a vortex materializing at the south pole of Saturn's moon Titan, signs that the seasons are turning on Saturn's largest moon.  |
| Making 'Renewable' viable: New technology for grid-level electrical energy storage developed Posted: 11 Jul 2012 07:48 AM PDT Researchers have developed a new method for quickly and efficiently storing and discharging large amounts of energy. Their "electrochemical flow capacitor," which is fully scalable, could be the key to a more efficient integration of renewable resources into the energy grid.  |
| Nanodevice builds electricity from tiny pieces Posted: 11 Jul 2012 07:10 AM PDT Scientists in the United Kingdom have made a significant advance in using nano-devices to create accurate electrical currents. They have developed a nano-size electron pump that picks these electrons up one at a time and moves them across a barrier, creating a very well-defined electrical current. The device drives electrical current by manipulating individual electrons, one-by-one at very high speed. This technique could replace the traditional definition of electrical current, the ampere, which relies on measurements of mechanical forces on current-carrying wires.  |
| Dark galaxies of the early universe spotted for the first time Posted: 11 Jul 2012 04:42 AM PDT Dark galaxies are small, gas-rich galaxies in the early Universe that are very inefficient at forming stars. They are predicted by theories of galaxy formation and are thought to be the building blocks of today's bright, star-filled galaxies. Astronomers think that they may have fed large galaxies with much of the gas that later formed into the stars that exist today.  |
| Silver nanoparticle synthesis using strawberry tree leaf Posted: 11 Jul 2012 04:42 AM PDT Scientists have synthesized silver nanoparticles, which are important to biotechnology, by using strawberry tree leaf extract. The new technology is ecological, simple, cheap and very fast. Strawberry tree leaf (Arbutus unedo) and silver nitrate (AgNO3). With just these two ingredients scientists can now produce silver nanoparticles, a material that is used in advanced technologies from compounds for distributing medicines through to electronic devices, catalysts, contaminant solvents.  |
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