Intel's wireless charging prototype. Photo by John Herrman, via Gizmodo

Intel recently pulled the wraps off its mystical wireless charging device at the Intel Developers Forum in San Francisco. The gadget uses resonant magnetic fields to transmit power over a short distance. In their demonstration, the wireless power transmitter sent enough juice through the ether to power a 60-watt lightbulb a few feet away.

It works like this: The charger sends power through the air across two resonating electromagnetic coils. Electromagnetic waves are emitted from one coil and are received by another a few feet away. The magic frequency for this power transmission seems to be 10 MHz. The result is a steady flow of juice at the receiving coil, enough to, say, power a lightbulb.

The technology has been around since the days of Tesla, but it hasn’t been deemed efficient enough or stable enough for everyday use. Until recently, engineers working at MIT could only get about 45 percent efficiency out of the system, meaning that more than half of the electricity going into the first coil never made it across the gap to the second. Intel claims that its new charger operates at 75 percent efficiency, a huge leap over previous systems.

Intel researchers say that that there’s no chance of getting zapped by the wireless charger. Magnetic waves pass through human bodies without interference, they say. The company hopes to develop a wireless charging system for laptops in the future.

Link to New York Times article

Enter LEDs, light-emitting diodes. They can be twice as efficient as CFLs and 10 times as efficient as incandescent bulbs. But they’re expensive, complex structures of gallium nitride crystals, reflectors and even sapphires. Until now. Researchers at Perdue University have figured out how to make LEDs using good-old silicon wafers. The new process could mean LEDs that compete, price-wise, with CFLs and even incandescent bulbs. And the new LEDs are efficient—between 47 to 64 percent efficient. Compare that to an incandescent bulb’s paltry 10 percent and you can see how the new lights could save a ton of electricity.

That’s not all. LED manufacturer OSRAM has developed a new LED that’s significantly brighter than existing bulbs. They’ve managed to push 500 lumens out of a single 1-mm-square LED. To put things into perspective, a 100-watt incandescent bulb puts out about 1700 lumens. The new LEDs are also extremely efficient, cranking out about 136 lumens per watt. Again, a 100-watt incandescent only manages about 17 or 18 lumens per watt. OSRAM plans to put the new bulbs on the market within a year. Possible uses include small projectors, automobile lights and interior lighting for the home.

If that wasn’t enough, the startup Vu1 is producing a new type of light bulb altogether. They’re called ESL (electron stimulated luminescence) and they use electrons to directly stimulate a layer of phosphorus on the inside of a bulb. It’s the same technology that makes the old-timey tube TVs glow. The company claims that their bulbs emit about 40 lumens per watt. The light, they say, matches incandescent light in color and quality. The bulbs should be available in September 2008 for about $12 a piece. Not cheap, but on par with the price of a dim-able CFL.

So what difference will all these newfangled bulbs make? The US uses a third of its energy for lighting. Engineers at Perdue estimate that switching out incandescent bulbs could cut US energy consumption by about 10 percent.

Link to TreeHugger article.

Link to Gizmodo article.

Link to Gizmodo article.

Why should you care? It means that the U.S. power grid is capable of handling a few million plug-in hybrids without blowing its gigantic, irreplaceable fuse. The logic goes something like this: Consumers have purchased millions of big-screen plasma sets during the past few years. They’ve all plugged them in and probably leave them on for HOURS each day. Plug-in hybrids, on the other hand, will likely be plugged in during off-peak hours, late at night while most people sleep and when the grid isn’t being taxed. 

The grid may be able to handle plug-in cars, but we’ll still need to generate more electricity to meet their demands. Hopefully that energy will come from solar and wind rather than coal-fired power plants.

Link to GlobeAuto story.

Biologist David Cheresh and his team developed the particles, essentially nanocapsules coated in a protein that sticks to the quickly multiplying blood vessels. Each capsule contains a dose of the chemotherapy drug doxorubicin (Dox), which was developed in the ’50s based on a toxin in soil fungus. Dox is still used to treat cancer, but in very low doses. Fighting cancer with Dox is similar to carpet bombing a village to get a single enemy soldier. The drug is potent, but it tends to wreak havoc on the entire body. Side effects of the drug include nausea and heart failure.

Cheresh and his team injected the nanoparticles into mice with pancreatic and renal tumors that had spread throughout the rodents’ systems. The nanoassassins reduced the size of original tumors by 35 percent and the secondary tumors by 91 percent. Cheresh hopes to refine the particles and eventually use them to treat cancer in humans.

Link to NewScientist article.

It works like this: Each nanowire is made up of two materials, a central core and a casing. Flashing a current through the wire causes either the core or the casing to phase change from crystalized (neat and orderly) to amorphous (jumbled and messy). The whole wire can either be crystalized or amorphous, representing a one or a zero, a traditional bit. Zapping the core crystalized and the casing amorphous or vice versa, adds the “two,” giving birth to the “trit.” 

Team member Ritesh Agarwal spoke to PhysOrg.com about the discovery:

“The use of nanowires to create electronic memory is advantageous for several reasons, but a non-binary form of nanowire memory like we have created could allow for a huge increase in the memory density of potential future devices.”

That means more memory in smaller packages and, eventually, digital wristwatches that are smarter than I am.

Link to PhysOrg.com article.

You might have noticed that the site is conspicuously lacking the daily helpings of science news that, in fact, define it. Well, I’ve been trudging through a deluge of freelance work for B&H Photo Video and FileMaker, in addition to caring for my newborn son and wife. Additionally, I’ve been waging a protracted war with a mild yet exceedingly annoying head cold. Excuses excuses, I know. But I plan to get back on track in the coming days and catch up on some old news that I think is especially important and/or exciting.

I also have an exclusive interview with a man who’s using bacteria to generate electricity from garbage. Mr. Fusion, watch out! The future is now.

So stay tuned, I’ll have something up soon.

-Dustin Driver 

Before swarms of nanites can organize to eradicate the human race, they’ll need a leader. Engineers in Japan have made the first steps in creating such a microscopic overlord, building a nanomachine that imitates human brain cells. The tiny machine can receive information from the macro world and transmit it to a small cadre of its companions. Working in concert, teams of the molecular contraptions could do everything from terminate tumors to crunch vast amounts of data in the blink of an eye.

Dr. Anirban Bandyopadhyay of the International Center for Young Scientists, in Tsukuba, Japan, led the team that developed the nanobrain. It’s made from 17 molecules of an compound called duroquinone, 16 arranged in orbit around one. The whole thing is held together by weak hydrogen bonds. Using a scanning electron microscope, Bandyopadhyay was able to send electrical impulses to the central molecule to change its configuration or state. The lead molecule then transfers its state to the other 16, like dominoes falling one after another.

It’s basically parallel processing on a micro scale, the same kind of number crunching that our brains are capable of. In fact, Bandyopadhyay modeled the microbrain on human glial cells, which pass info between neurons in the brain. They call it “one-to-many computation” and it’s key to parallel processing.

So what can it do? Bandyopadhyay estimates that the simple assembly is capable of generating more than 4 billion different outcomes from one input instruction. There’s no comparing true parallel processing to current processors, which crunch computations linearly. Parallel processors can take on millions of lines of instruction at once. That’s the kind of computing power that can keep Moore’s Law of exponential computing growth chugging away into stratospheric heights. 

And it’s not just powerful—the nanocomputer would represent a completely new way of computing. It’s purely visual, using patterns to replace the differential equations that are at the heart of current computing.

There’s also a potential to manufacture billions of molecules of a custom drug with just one instruction. Imagine a single drop of water hitting a placid pool. Waves radiate out from the site of impact, quickly covering the entire surface. A single instruction dropped into a field of similar nanomachines would spread in the same manner.

Bandyopadhyay is currently working to create more complex versions of his nanobrain and hopes to have a functional computer within a few years. The trick is finding something other than a massive tunneling electron microscope to interact with the machines. Bandyopadhyay hopes other control methods will be developed, including optical readers for the nanocomputers, or chemical triggers for the medical nanofactories.

Link to MSNBC article.

Link to BBC article.

Photo Credit: Rensselaer/Koratkar

Cover the insides of your boiler with copper nanorods and you’ll increase its steam output by a factor of 30, granting your fire-breathing steam-turbine velocipede the supersonic speeds befitting its polished-brass fittings. Researchers at the Rensselaer Polytechnic Institute made the discovery by accident, not while tinkering in their anachronistic steampunk workshops, but while conducting routine experiments with nanoparticles. The team sprayed an invisible forest of the miniscule copper rods on the bottom of a vessel. They soon realized that water boiled in the special pot turned to steam much faster than water boiled in a plain old tea kettle. 

The trick? If you want steam, you need water and air. Boiling water turns to steam only where it comes into contact with air. In a regular pot, all of the water can be hot enough to boil, but only a fraction of it is in contact with air. The forest of copper nanorods traps air molecules, which means far more water in contact with air. It’s effective: Nanorod-coated pots produce 3,000 percent more bubbles and a ton more steam than run-of-the-mill pots.

At first glance the discovery seems only relevant to steam engine buffs. But most of our electricity generated by steam turbines: coal or natural gas heats water to produce steam that turns turbines that spins generators that produce electricity. The copper nanorods could mean more efficient steam production, which means burning less coal or natural gas. It makes most power sources get cheaper. 

Nikhil A. Koratkar, associate professor in the Department of Mechanical, Aerospace, and Nuclear Engineering at Rensselaer:

“If the time taken to boil a given quantity of water is reduced by an order of magnitude, that should translate into significant cost savings” 

Link to Rensselaer release.

Their new printer, dubbed Labratester 2, will be able to print a tiny TFT matrix on any material, then follow up with an LCD matrix. The process should allow cheap digital displays that could be printed on eyeglasses, clothing or anything else.

Link to ScienceDaily article.