Hasta La Gadget!

This transparent sensor can stretch to great lengths without getting deformed, all the while sensing pressure. Image: Stanford News

We’re used to tapping away at flat, glass-covered touchscreen devices like smartphones and tablets. A group of Stanford researchers have taken that capacitive touch concept and applied it to a completely new form factor, which could have wide-ranging applications in consumer technology, robotics and beyond.

The team created a transparent, super-stretchy sensor that can be used repeatedly without getting deformed, snapping back into shape after each use. The team hopes that their sensor could be used in medical applications like pressure-sensitive bandages, or even as an outer, skin-like layer to create touch-sensitive limbs or robots. Of course, it could also be used on touchscreen devices and computers.

Through spraying carbon nanotubes onto a layer of silicon and then stretching out the substance a few times, the nanotubes are essentially organized into “springs.” The “springs” can stretch in any direction, and be used to measure the force exerted upon itself over and over again without getting stretched out of shape.

The capacitive touch sensor works like this: There are two conductive parallel plates. When one or both are pressed, the distance between them gets smaller, increasing the capacitance of the sensor. That increase can be quantified and measured. In this case, the two conductive parallel plates facing one another are composed of nanotube coated-silicon, with a middle layer of silicon that stores charge.

The stretchy sensor can detect a wide array of touches, according to Darren Lipomi, a postdoctoral researcher on the team. That means from something as light as a “firm pinch between your thumb and forefinger” to double the pressure of a stamp of an elephant’s meaty foot.

So far the sensor isn’t as sensitive as previous projects the Stanford team has worked on (one of which was so responsive that the pressure exerted from a 20 milligram bluebottle fly carcass was well above what it could detect). However, the researchers can eventually use those previous techniques to calibrate this stretchy capacitive sensor. “We just need to make some modifications to the surface of the electrode so that we can have that same sensitivity,” said Zhenan Bao, associate professor of chemical engineering at Stanford.

Check out the video below to see researchers manipulating, testing and talking about their stretchy, skin-like capacitive sensor.

Thanks Steve!

Faster delivery is always better when it comes to pizza, Thai food and now… drugs? Doctors seem to think so as they’re experimenting with a new method of delivering medicine to the bloodstream via tiny nanotubes powered by rocket fuel. By storing healing meds within the platinum-coated metal tubes, doctors have been able to propel the tiny vessels up to 200 times their own length per second — faster than swimming bacteria. It works as such: by introducing a hydrogen peroxide/water solution, the platinum reacts, sending it zipping forward and catalyzing the peroxide into water and oxygen. The downside? Even though the fuel is only .25 percent peroxide, it’s still slightly toxic — so it looks like it’s back to the drawing board until they can develop a safer alternative. Spiders, perhaps? Check out the video demonstration after the break.

Continue reading Researchers say nanorockets could deliver medicine quickly within the blood

Researchers say nanorockets could deliver medicine quickly within the blood originally appeared on Engadget on Mon, 03 Oct 2011 23:46:00 EDT. Please see our terms for use of feeds.

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Barely 24 hours after we told you about printing your own bones, the franken-science continues with the announcement that blood vessels are next on the body-parts-you-can-print list. Unsurprisingly, you’ll need more than just regular toner if you want to start printing your own at home, but pioneering work by application-oriented research organization Fraunhofer has claimed to have cracked it by adding some good old ‘two-photon polymerization’ into the mix — yeah, obvious once you know. The added photon special sauce is what makes the printed synthetic tubes biofunctionalized, which in turn enables living body cells to dock onto them — we’re guessing that’s important. Sounds cute, but how long until we can start printing whole people — Weird Science, anyone?

Continue reading Print your own blood vessels, no need for red toner

Print your own blood vessels, no need for red toner originally appeared on Engadget on Mon, 19 Sep 2011 13:46:00 EDT. Please see our terms for use of feeds.

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After tackling your tech support woes, the famed Watson is moving on to mop up the health insurance industry. That’s right, the IBM showstopper we all know and love for trouncing trivia kings on Jeopardy has been hired by one of the largest health insurance company’s in the US. WellPoint Inc. will make use of the system’s breakneck speed and healthcare database alongside patient records — allowing the supercomputer to guide treatment options and prescribe medicines. Once implemented, data will be combined from three sources in a matter of seconds: a patient’s chart / records from a doctor, the insurance company’s patient history and the medical knowledge that Watson already possesses. A pilot program will roll out next year to a number of cancer facilities, academic medical centers and oncology practices. No word yet on when The Watson School of Medicine will start accepting applications.

IBM’s Watson set to tackle health insurance, takes ‘Diagnosis for $1,000’ originally appeared on Engadget on Mon, 12 Sep 2011 17:24:00 EDT. Please see our terms for use of feeds.

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Bigger is certainly not better when it comes to the world’s first single-molecule electric engine, which measures in at one nanometer wide — for perspective, that lash hanging from your left eye is around 60,000 times larger. Single-molecule engines have been used for years, but the new method uses a low-temperature scanning tunneling microscope to power and control the molecule more effectively. In the future, scientists could use the technology for things like lab-on-a-chip devices, miniature medical testing equipment that require a motor to push fluid through tiny pipes. Tufts researchers responsible for the discovery warn that a practical application is still a ways off, but are hopeful that they’ll snag a Guinness world record, regardless. After hearing the news, both Pinky and The Brain are feeling entirely more confident about their lifelong goals.

Scientists develop the world’s smallest single-molecule electric motor originally appeared on Engadget on Tue, 06 Sep 2011 19:33:00 EDT. Please see our terms for use of feeds.

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