ScienceDaily: Top Technology News |
- Creation of the largest human-designed protein boosts protein engineering efforts
- Ionized plasmas as cheap sterilizers for developing world
- In new quantum-dot LED design, researchers turn troublesome molecules to their advantage
- New biosensor benefits from melding of carbon nanotubes, DNA
- Mimicking the brain -- in silicon: New computer chip models how neurons communicate with each other at synapses
- Ancient stars shed light on the prehistory of the Milky Way
- Converting waste heat into electricity
| Creation of the largest human-designed protein boosts protein engineering efforts Posted: 15 Nov 2011 03:03 PM PST Chemists have designed and successfully synthesized the largest artificial protein using a new approach that greatly expands scientists' ability to create proteins unknown in nature.  |
| Ionized plasmas as cheap sterilizers for developing world Posted: 15 Nov 2011 03:03 PM PST Devices that create ionized plasmas could be life-savers in the developing world or on the battlefield, providing an inexpensive way to sterilize water and medical instruments. Researchers have created low-temperature plasma devices that sterilize water and keep it antimicrobial for at least a week. A new report finds that the hydrogen peroxide and nitrites produced by the plasma discharge are not the source of long-term antimicrobial activity.  |
| In new quantum-dot LED design, researchers turn troublesome molecules to their advantage Posted: 15 Nov 2011 03:03 PM PST By nestling quantum dots in an insulating egg-crate structure, researchers have demonstrated a robust new architecture for quantum-dot light-emitting devices (QD-LEDs). Quantum dots are very tiny crystals that glow with bright, rich colors when stimulated by an electric current. QD-LEDs are expected to find applications in television and computer screens, general light sources, and lasers.  |
| New biosensor benefits from melding of carbon nanotubes, DNA Posted: 15 Nov 2011 10:30 AM PST Scientists have developed a method for stacking synthetic DNA and carbon nanotubes onto a biosensor electrode, a development that may lead to more accurate measurements for research related to diabetes and other diseases.  |
| Posted: 15 Nov 2011 07:35 AM PST For decades, scientists have dreamed of building computer systems that could replicate the human brain's talent for learning new tasks. Researchers have now taken a major step toward that goal by designing a computer chip that mimics how the brain's neurons adapt in response to new information. This phenomenon, known as plasticity, is believed to underlie many brain functions, including learning and memory.  |
| Ancient stars shed light on the prehistory of the Milky Way Posted: 15 Nov 2011 06:59 AM PST Some of Milky Way's 'stellar fossils' -- our galaxy's oldest stars -- contain abnormally large amounts of heavy elements like gold, platinum and uranium. This has been a mystery, since it's usually seen in much later generations of stars. Researchers have been studying these ancient stars and with recent observations they have concluded how they could have been formed in the early history of the Milky Way.  |
| Converting waste heat into electricity Posted: 09 Nov 2011 06:35 AM PST More than half of today's energy consumption is squandered in useless waste heat, such as the heat from refrigerators and all sorts of gadgets and the heat from factories and power plants. The energy losses are even greater in cars. Automobile motors only manage to utilize 30 per cent of the energy they generate. Scientists in Norway are developing a new environmentally friendly technology called thermoelectricity, which can convert waste heat into electricity. To put it briefly, the technology involves making use of temperature differences.  |
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