microbots
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Scientists successfully implant self-destructing nanobots into live mice
We've seen nanobots do some neat stuff so far (aquatic dance routines immediately come to mind), but them administering drugs inside a living organism's been the stuff of scientists' dreams. Researchers at the University of California San Diego, however, recently made it a reality by successfully administering acid-powered, zinc-based, self-destructing micromotors inside living mice. The ultra-tiny 'bots measured in at 20 micrometers long, roughly a human hair's width, and are tough enough to survive the harsh gastrointestinal environment autonomously. What's more, they destroy themselves without leaving any traces of harmful chemicals behind and being self-propelled apparently was a factor in "greatly improved" tissue penetration and drug retention. As the BBC points out, this would make them great for treating maladies like peptic ulcers and other stomach disorders.
Watch a tiny, magnetically powered robot construction crew go to work
A robot doesn't have to big, powerful and terrifying to be worthwhile, and many people are working on miniature machines that are just as cool. Some of these endeavors show promise in medicine, but there are plenty of potential uses for microbots, especially when you can persuade a swarm of them to work together. Research outfit SRI reckons tiny automatons have a bright future in manufacturing, thanks to its new method for precisely controlling individuals within a larger group. You see, one of the best ways of propelling and controlling microbots is by using magnets. and it's because there's no need for an on-board power source that we can make 'em so small. This poses a problem, however, as a pack of bots will all respond to a magnetic field in the same way, making it hard to give anything but a blanket order.
Researchers power microbots made of bubbles with lasers
They may not be "robots" as most have come to expect, but these so-called microrobots developed by a team of researchers from the University of Hawaii at Manoa do have at least one thing in common with many of their mechanical counterparts: lasers. As IEEE Spectrum reports, the bots themselves are actually nothing more than bubbles of air in a saline solution, but they become "microrobots" when the laser is added to the equation, which serves as an engine of sorts and allows the researchers to control both the speed and direction of the bubbles. That, they say, could allow the bots to be used for a variety of tasks, including assembling microstructures and then disappearing without a trace when the bubble is popped. Head on past the break for a video of what they're already capable of.
Microbot controls swarm of bacteria, puts all flea circuses to shame
Sylvain Martel, what hast thou sown? The director of the NanoRobotics Laboratory at the École Polytechnique de Montréal this week is presenting his latest microbot at ICRA in Japan, and it's got a pretty crazy trick. The solar panel-equipped device sizes up to about 300 x 300 microns, and using a sensor to detect nearby pH levels, it's been shown as capable of controlling a swarm of 3,000 bacteria using electromagnetic pulses. Sure, Martel suggests there'll be some eventual medical uses for the technology, but we'd be lying if we said the video demonstration didn't give us the willies. See for yourself in the video linked below. Read - Announcement Read - Video
Heart muscle tissue powers new body roaming robots
While we've seen a microbot that crawls across hearts, a new creature has been developed by gurus at Chonnam National University in South Korea that actually gets its energy from the heart. Reportedly, the team created the robot by "growing heart muscle tissue from a rat onto tiny robotic skeletons made from polydimethylsiloxane (PDMS)," and the result is an E-shaped creature that can move its own legs through the "relaxing and contracting of heart muscle cells." Currently, the bot has been clocked scurrying along at a stagering 100 micrometers-per-second, and while it isn't apt to win any races, it could be loosed within the body to "clear blocked tubes or arteries" in the future. Check the video of this wild guy in action right here.[Via Primidi]
Autonomous robotic fleas could create distributed sensor network
We've seen a fair bit of mesh networking approaches lately, and thanks to a unusual project going on at the University of California, Berkeley, the next great ad hoc network could be started by a horde of bugs. Sarah Bergbreiter has developed an "autonomous robotic flea has been developed that is capable of jumping nearly 30 times its height," thanks to what could possibly be hailed as the "world's smallest rubber band." Interestingly, the creator hopes that the minuscule bugs could eventually be used to "create networks of distributed sensors for detecting chemicals or for military-surveillance purposes." The Smart Dust initiative could eventually be expanded to grow wings, but for now the solar-powered bugger will stick to hoppin' via a "microcontroller to govern its behavior and a series of micro electromechanical systems (MEMS) motors on a silicon substrate."[Via BoingBoing]
NC State researchers devise new ways to invade your bloodstream
While schools in the ACC are certainly making noise on the hardwood, it seems that the Atlantic Coast Conference is also interested in shoving microbots all around your innards. Just days after a team from Georgia Tech envisioned a new internal method for monitoring blood pressure, research conducted at NC State is hoping to cram even more robotic creatures into deep, dark places within your body. A team led by Orlin Velev has discovered that "a simple electronic diode" could spark a new form of propulsion which could power robots and other diminutive devices from a distance. By exploiting "a phenomenon known as electro-osmosis," the diodes can push microscopic material through internal fluids "at speeds of several millimeters per second," which could allow cameras and medicines to reach critical locales that are presently isolated. Of course, there's still a good bit of work to be done, as the prototype device still has become substantially smaller before it will even fit in most of the tiny tubes within your skin, but it's looking more and more like we'll have nursebots shoving spinoffs of themselves into our beings before too long.[Via NewScientistTech]
