Category Archives: Products

First Year of Google WiFi

Our Mountain View WiFi network just celebrated its first anniversary, and we thought you’d appreciate a few data points. The network’s 400+ mesh routers cover about 12 square miles and 25,000 homes to serve approximately 15,000 unique users each week month. Since the beginning of 2007, traffic has grown almost 10 percent each month, and the network now handles over 300 gigabytes of data each day, sent to over 100 distinct types of WiFi devices. Virtually the entire city has been taking advantage of the network, with 95 percent of the mesh routers being used on any given day.

Around the globe and across the U. S., many people are still not able to access the online services that are increasingly helpful, if not essential, tools for our daily lives. This is why we’re committed to promoting alternative platforms for people to access the web, no matter where you are, what you’re doing or what device you’re using.

Vertical Rotation Personal Windmill

New wind turbine spins success for winning student

Ben Storan, a student graduating with an MA in Industrial Design Engineering from the Royal College of Art (RCA), has been working for the past year in conjunction with Imperial College to design an affordable personal wind turbine suited to the urban environment.

The result is a unique design which uses vertical, rather than traditional horizontal, rotation. This feature gives a slower rotational speed, which allows the turbine to capture more energy from turbulent air flow, common to urban environments. It also means quieter operation. As a result, it is able to generate more energy than domestic models currently on the market. Similarly sized existing personal wind turbines claim to generate 1kW at a wind speed of 12 m/s, but typically produce just 40% of what is claimed. Ben’s design should realistically produce 3 times that (1.2kW) of those currently on the market.

More on Amazing Aerogel

We added a post on aerogel earlier this month. Here is another article on the incredible substance – Scientists hail ‘frozen smoke’ as material that will change world:

It is expected to rank alongside wonder products from previous generations such as Bakelite in the 1930s, carbon fibre in the 1980s and silicone in the 1990s. Mercouri Kanatzidis, a chemistry professor at Northwestern University in Evanston, Illinois, said: “It is an amazing material. It has the lowest density of any product known to man, yet at the same time it can do so much. I can see aerogel being used for everything from filtering polluted water to insulating against extreme temperatures and even for jewellery.”
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It also has green credentials. Aerogel is described by scientists as the “ultimate sponge”, with millions of tiny pores on its surface making it ideal for absorbing pollutants in water. Kanatzidis has created a new version of aerogel designed to mop up lead and mercury from water. Other versions are designed to absorb oil spills.

Microchip Cooling Innovation

New technology has dramatic chip-cooling potential for future computers

The Purdue University researchers, in work funded by Intel Corp., have shown that the technology increased the “heat-transfer coefficient,” which describes the cooling rate, by as much as 250 percent. “Other experimental cooling-enhancement approaches might give you a 40 percent or a 50 percent improvement,” said Suresh Garimella, a professor of mechanical engineering at Purdue. “A 250 percent improvement is quite unusual.”
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The experimental cooling device, which was fabricated on top of a mock computer chip, works by generating ions – or electrically charged atoms – using electrodes placed near one another. The device contained a positively charged wire, or anode, and negatively charged electrodes, called cathodes. The anode was positioned about 10 millimeters above the cathodes. When voltage was passed through the device, the negatively charged electrodes discharged electrons toward the positively charged anode. Along the way, the electrons collided with air molecules, producing positively charged ions, which were then attracted back toward the negatively charged electrodes, creating an “ionic wind.”

This breeze increased the airflow on the surface of the experimental chip. Conventional cooling technologies are limited by a principle called the “no-slip” effect – as air flows over an object, the air molecules nearest the surface remain stationary. The molecules farther away from the surface move progressively faster. This phenomenon hinders computer cooling because it restricts airflow where it is most needed, directly on the chip’s hot surface.

via: Purdue University’s Ionic Wind Engine

Aerogels – Cool Substances

First Prize for Weird

A solid that’s up to 99 percent gas, it is rigid to a light touch, soft to a stronger one, and shatters like glass if it’s put under too much pressure too quickly; it’s one of the most enigmatic of materials, as well as one of the most versatile.

It can withstand the heat of a direct flame; engineers use it for insulation on oil rigs and for warmth in the insoles of hiking boots worn in the coldest temperatures on Earth. NASA uses it to trap comet dust blowing through the universe at six kilometers per second.
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Nicknamed “frozen smoke” after its ethereal appearance, aerogel is neither frozen nor smoke. It’s also surprisingly low tech—it’s been known since 1931
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Together, these ingredients can form a structure that chemically resembles glass but is so full of whorls and crevices that one cubic centimeter has a total surface area equal to a football field’s. The lightest-weight solid in the world, aerogel weighs 1.2 milligrams per cubic centimeter—barely more than the air molecules around it. In fact, the material itself is almost entirely made of air, like a sponge that consists mostly of holes. Don’t let its lightness fool you: it’s strong. NASA photos show two grams of the material easily supporting a 2.5-kilogram brick.
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And because the aerogels pack an enormous surface area into a tiny volume, small pieces can clear out many liters of water. Kanatzidis’s aerogels sopped up so much mercury that they diluted a solution of 645 parts per million down to 0.04 parts per million. They had similar effects on lead and cadmium, two other pollutants.

The new aerogels aren’t ready for widespread use: they’re made with platinum, so they’re extraordinarily expensive. But if other metals can be used to make them instead (Kanatzidis says they can), chunks of them could be dropped into polluted water, removing contaminants.

Cool. NASA Aerogel FAQ

AlienFly RC Mosquito Helicopter

Fun looking toy: AlienFly RC Mosquito. I don’t have one but the Amazon reviews are positive and it is under $30 (which again the reviews state should be your guide – fun but not a high performance piece of equipment). Getting the AC adapter sounds like a good idea too.

Evolutionary Design

Evolutionary algorithms now surpass human designers by Paul Marks:

Evolutionary Algorithms take two parent designs – for a boat hull, say – and blend components of each, perhaps taking the surface area of one and the curvature of another, to produce multiple hull offspring that combine the features of the parents in different ways. Then the algorithm selects those offspring it considers are worth re-breeding – in this case those with the right combination of parameters to make a better hull. The EA then repeats the process. Although many offspring will be discarded, after thousands of generations or more, useful features accumulate in the same design, and get combined in ways that likely would not have occurred to a human designer. This is because a human does not have the time to combine all the possibilities for each feature and evaluate them, but an EA does.

Evolving new designs is very cool. One point I would like to make (I am biased since my father did a great deal of work in this area) is the power of design of experiments to allow experimenting on multiple factors at once. This is a methodology that is still used far too little. Regardless, evolutionary design is very cool. The Human-Competitive awards highlight some examples.

Camera Fashion

Another merging of fashion and technology. Images are printed that are not visible to the eye but are to a camera. It does bring to mind some interesting applications.

Related: Hug Shirt – Gadgets and Gifts

Robot Hall of Fame

Robot Hall of Fame at Carnegie Mellon

Two categories of robots are honored in the Robot Hall of Fame:

Robots from Science – These are real robots that have served useful or potentially useful functions and demonstrated unique skills in accomplishing the purpose for which they were created. These may also be robots created primarily to entertain, as long as they function autonomously.

Robots from Science Fiction -These are fictional robots that have inspired us to create real robots that are productive, helpful, and entertaining. These robots have achieved worldwide fame as fictional characters and have helped form our opinions about the functions and values of real robots.

The web site is not exactly great yet but the idea seems to have merit and the location is sensible; Tour the Carnegie Mellon Robotics Lab.

Robo Insect Flight

photo of flying robot on a hand

Robotic Insect Takes Off

“Nature makes the world’s best fliers,” says Robert Wood, leader of Harvard’s robotic-fly project and a professor at the university’s school of engineering and applied sciences.

The U.S. Defense Advanced Research Projects Agency is funding Wood’s research in the hope that it will lead to stealth surveillance robots for the battlefield and urban environments. The robot’s small size and fly-like appearance are critical to such missions. “You probably wouldn’t notice a fly in the room, but you certainly would notice a hawk,” Wood says.

Recreating a fly’s efficient movements in a robot roughly the size of the real insect was difficult, however, because existing manufacturing processes couldn’t be used to make the sturdy, lightweight parts required. The motors, bearings, and joints typically used for large-scale robots wouldn’t work for something the size of a fly. “Simply scaling down existing macro-scale techniques will not come close to the performance that we need,” Wood says.

Cool. How annoying are those pop up ads after you follow the link though? Extremely yucky usability.