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Saturday, January 18, 2014

ScienceDaily: Top Technology News

ScienceDaily: Top Technology News

Tiny swimming bio-bots boldly go where no bot has swum before

Posted: 17 Jan 2014 04:13 PM PST

The alien world of aquatic micro-organisms just got new residents: synthetic self-propelled swimming bio-bots. Engineers have developed a class of tiny bio-hybrid machines that swim like sperm, the first synthetic structures that can traverse the viscous fluids of biological environments on their own.

Highly efficient broadband terahertz radiation from metamaterials

Posted: 17 Jan 2014 04:13 PM PST

Scientists have demonstrated broadband terahertz wave generation using metamaterials. The discovery may help develop noninvasive imaging and sensing, and make possible terahertz-speed information communication, processing and storage.

Energy storage in miniaturized capacitors may boost green energy technology

Posted: 17 Jan 2014 12:36 PM PST

"Supercapacitors" take the energy-storing abilities of capacitors (which store electrical charge that can be quickly dumped to power devices) a step further, storing a far greater charge in a much smaller package. Researchers have now described the possibility of fabricating a new class of high heat-tolerant electronics that would employ supercapacitors made from a material called calcium-copper-titanate, or CCTO, which the researchers have identified for the first time as a practical energy-storage material.

Smooth sailing: Rough surfaces that can reduce drag

Posted: 17 Jan 2014 12:36 PM PST

From the sleek hulls of racing yachts to Michael Phelps' shaved legs, most objects that move through the water quickly are smooth. But researchers have found that bumpiness can sometimes be better. They modeled the fluid flow between two surfaces covered with tiny ridges and found that even in turbulent conditions the rough surface reduced the drag created by the friction of flowing water.

Carbon nanotube sponge shows improved water clean-up

Posted: 17 Jan 2014 06:06 AM PST

A new carbon nanotube sponge capable of soaking up water contaminants, such as fertilizers, pesticides and pharmaceuticals, is more than three times more efficiently than previous efforts.

Airport screening queues: Calculating waiting time at security control

Posted: 17 Jan 2014 06:04 AM PST

Thermal imaging cameras at airports could calculate queues and check-in times better than systems that make estimates using Bluetooth and WiFi on passengers' mobiles.

Renewable chemical ready for biofuels scale-up

Posted: 16 Jan 2014 11:46 AM PST

Using a plant-derived chemical, researchers have developed a process for creating a concentrated stream of sugars that's ripe with possibility for biofuels.

Biomedical engineer pursues development of five-dimensional imaging technology

Posted: 16 Jan 2014 08:29 AM PST

An American biomedical engineering is leading an effort to develop a new type of X-ray scanner that is an unprecedented five dimensional technology. In this work, he will combine three separately developed technologies into one synergistic imaging system that will improve aspects of personalized medicine and help with early disease screening.

'Standing on a comet': Rosetta mission will contribute to space weather research

Posted: 16 Jan 2014 08:27 AM PST

A comet-bound spacecraft that's been in sleep mode for more than two years is scheduled to wake up on the morning of Jan. 20 -— beginning the home stretch of its decade-long journey to a mile-wide ball of rock, dust and ice.
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