nanowires
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Georgia Tech researchers develop environmentally-powered nanogenerators
While the school of the Ramblin' Wreck may be best known for its barrage of engineering graduates, the university has been on quite the medical trip of late, as researchers have reportedly developed a nanometer-scale generator after already cranking out nanowires that monitor your blood pressure. The aptly-named nanogenerators can produce "continuous direct-current electricity by harvesting mechanical energy from such environmental sources as ultrasonic waves, mechanical vibration or blood flow," which translates into easy energy for implanted and worn medical gadgetry of the future. Interestingly, the project was funded by the likes of the National Science Foundation and our pals at DARPA, and while this invention may not quite match up with wireless charging (hey, we're scared of hospitals), the concept is novel nonetheless. So if you were hoping that dreams of implanted analysis of your vitals would suddenly cease, things aren't looking up for you.[Via MedGadget]
Georgia Tech researchers design nanowires to monitor blood pressure
If you see yourself taking an unwanted trip to the ER anytime in the next decade or so, there's a fairly decent chance you'll end up with at least one or two creepy creatures perusing some aspect of your innards. As if mechanical beings cruising through your intestines wasn't eerie enough, a team of Georgia Tech researchers have proposed a new way to constantly monitor one's blood pressure. The aptly-dubbed nanowires take advantage of the "piezoelectric effect in semiconducting zinc oxide" in order to detect minute forces as tiny "as a few piconewtones," or about the same amount needed to unzip a strand of DNA. The specially designed sensors will purportedly enable robotic nurses to continually monitor your blood pressure to take action before things get too out of hand, and of course, the "biocompatible "system would beam results wirelessly to devices in hospitals or even wrist-mounted readers so you'd know when to pop a proverbial chill pill. This should definitely suffice as a "second opinion," eh?
Breakthrough in ferroelectric materials could enable million-GB thumbdrives
While we have to agree with certain Engadget readers who feel that 640KB of RAM is plenty for most computing tasks, those darn scientists just keep looking for ways to stuff more and more data into smaller spaces. The latest breakthrough on the storage tip comes courtesy of researchers from Drexel and Penn, who have found a way to stabilize the simple physical property of ferroelectricity at the nano scale, making possible such obviously unnecessary densities as 12,800,000GB per cubic centimeter. Ferroelectric materials are usable as memory because they possess the ability to switch electric charges in so-called dipole moments, but before Drexel's Dr. Jonathan Spanier and colleagues decided to embed the materials in water, it had previously been impossible to screen those dipole moments at scales small enough to be useful. Don't expect to be able to buy a zillion gig, water-filled iPod anytime soon, though, as the research team still faces significant hurdles in actually assembling the nanowires that would make up such a drive with the proper density as well as developing a method of efficiently reading and writing data.
Nanogenerators turn you into a duracell
For anyone who thought gyms with workout equipment that generate electricity were a good idea, prepare to be one-upped. Researchers at the Georgia Institute of Technology are working on metallic nanowires as nanogenerators that transform bodily kinetic energy into pure electricity. We were all thinking, oh, sweet, power-generating nanotech clothes. Naw dude, these peeps want to implant the nanogenerators right in your corporeal form for maximum energy output. Thought your mom got mad when you got a tattoo or piercing? Try explaining subcutaneous power generating zinc oxide nanowires.
