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Electronics

Cota system transmits power wirelessly at up to 30 feet

In 2008, Gartner Research released a report in which it identified the number one IT grand challenge as "Never having to manually recharge devices." Physicist Hatem Zeine has invented what he believes to be the answer to this challenge. The Cota wireless power transmission system uses intelligently steered phased array antennas to focus a beam of microwaves on a receiver module – and only on that module. The inherently safe technology can deliver electrical power up to 30 feet from a central transmitter without any line-of-sight requirement and without interfering with other devices. The system is projected to hit the market in 2015.Read More

Science

FINDER detects heartbeats beneath 30 feet of rubble

Sniffer dogs and fiber optic cameras may soon be getting some assistance, when it comes to locating people trapped beneath debris. The Department of Homeland Security’s Science and Technology Directorate has joined forces with NASA’s Jet Propulsion Laboratory (JPL) to create a microwave radar-based system known as Finding Individuals for Disaster and Emergency Response – or FINDER. The new technology is able to detect a human heartbeat buried up to 30 feet (9 meters) under assorted rubble. Read More

Telecommunications

Record 40 Gbit/s wireless data transmission rate matches it with optical fiber

If you thought 5G wireless was fast at one Gbit/s, how does 40 Gbit/s sound? That's the new wireless data transmission record set by a team of engineers in Germany using integrated solid state mm-wave transceivers. This data transmission rate was demonstrated over a distance of 1 km (0.6 miles) and it is hoped that such links could be used to close gaps between optical networks in rural areas at a fraction of the cost of installing optical fiber.Read More

Science

Make your own invisibility cloak with a 3D printer

Invisibility cloaks have been around in various forms since 2006, when the first cloak based on optical metamaterials was demonstrated. The design of cloaking devices has come a long way in the past seven years, as illustrated by a simple, yet highly effective, radar cloak developed by Duke University Professor Yaroslav Urzhumov, that can be made using a hobby-level 3D printer.Read More

Electronics

Making solar cells with a kitchen microwave

For most people, experiments involving a home microwave typically don't go much further than inflating a marshmallow like a balloon or reheating leftovers in plasticware – both with messy results. For metallurgists though, microwaves are sometimes employed to efficiently process metals, which is how researchers at the University of Utah found themselves using a secondhand kitchen appliance in their lab. Their resourcefulness paid off recently, when the team discovered a method for creating solar cell material with just a few basic ingredients and an old microwave.Read More

Piamo single-serve espresso maker for microwaves

Christoph Meyl was faced with a dilemma that many espresso-lovers would relate to. His office was too far from the nearest café, the communal kitchen was shared with 600 other employees and there was no coffee machine, just a microwave. His solution – the Piamo single-serve espresso maker. Read More

New technique could make bread last two months

Bread may be the staff of life, but it doesn't keep very well. Left to its own devices, a loaf will start to go moldy in a week – a fact that costs consumers and the food industry millions of dollars each year. Now, according to the BBC, a Texas-based company have developed a process that kills spores so that a loaf of bread can stay mold-free for up to 60 days.Read More

Good Thinking

Microwave-packing EatWave vending machine delivers cold food and hot

Aside from items with a lengthy shelf life, such as candy bars and potato chips, purchasing any more substantial food from a vending machine is generally a recipe for disappointment. While devices like the pizza vending machine take a specialized approach in an attempt to improve the quality of food on offer, the shotgun approach of traditional vending machines means almost every "fresh" item ends up being anything but. But that could change at least a little bit with the EatWave, a new vending machine that stores refrigerated food and drinks and can microwave specific items before they're delivered.Read More

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