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SCI/TECH: Nanobot Swarm To Go To Mars?

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posted on Apr, 11 2005 @ 01:08 PM
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By now, you may or may not have heard of ANTS (Autonomous Nanotechnology Swarm), and the TETWalker robot prototype that has undergone a series of tests since January at various sites around the world. The TETWalker, a four-sided pyramid-shaped robot, propels itself by throwing off it's center of gravity until it topples over. It is hoped that a miniaturized version of this, using MEMS (Micro Electrical Mechanical Systems) and Carbon Nanotubes. A swarm of these nanites would be have incredible maneuverability, structural integrity, and be able to construct itself into a variety of shapes. But are these dreams really feasible?
 



www.spaceref.com
These miniature TETwalkers, when joined together in "swarms," will have great advantages over current systems. The swarm has abundant flexibility so it can change its shape to accomplish highly diverse goals. For example, while traveling through a planet's atmosphere, the swarm might flatten itself to form an aerodynamic shield. Upon landing, it can shift its shape to form a snake-like swarm and slither away over difficult terrain. If it finds something interesting, it can grow an antenna and transmit data to Earth. Highly-collapsible material can also be strung between nodes for temperature control or to create a deployable solar sail.


Please visit the link provided for the complete story.


The answer is: Yes... but not for a while.

The current known limit of a carbon nanotube is 0.4 nanometers before it begins to collapse. The temperature threshold of the tube is dependant on how it was created, but can easily reach 600+ Celsius. Mars' paltry 80-degree surface temperature on its hottest days will pose no threat to structural integrity. When coiled, the nano tubes have an ability to act as their own suspension, electrical conductor, resistor, and have an incredible strength to them. Such coils could be compressed and extended to increase the size of each face in each pyramidal ANT.

But how do you control such powerful potential for a machine? We needn't worry about Grey Goo scenarios, where the nanotechnology grows out of control and "eats" a planet. The hardest part is going to be figuring out how to coordinate the movement of billions of individual robots at once. The Operating System code for this project would have to have an unprecedented number of variables and functions, while being tiny enough to be processed by the limited processing space of each bot. Unlike a "particle" generator (such as would be used for CGI waterfalls), the nanites themselves cannot just be told to "go that way" and serve any useful purpose. Each individual robot will have to be analyzed for damaged, disjoined, the undamaged bots rejoined, and even the simple act of building a structure will have to be directed within the limits and confines of both the bots movements and intelligence.

The second obstacle will be the power source. Not only will enough power be needed to move these billions of bots, but also the power source itself will need to be just as mobile. Solar technology is a possibility, but perhaps not a viable one due to the size needed for a photovoltaic cell, and their fragile nature. So, solar power is likely out until we can make a nano-sized solar cell. This leaves a difficult gap in a critical area, as power determines the size of the bot, the capabilities built into it, the mission objectives, and the mission length.

Until this is figured out, the entire plan is mere theory.

Related News Links:
ants.gsfc.nasa.gov
www.americanscientist.org
www.cs.ucl.ac.uk
en.wikipedia.org

Related AboveTopSecret.com Discussion Threads:
ANTS to explore the the solar system!
SCI/TECH: Robot Finds Life in Desert, Mimicking Skills Needed on Mars




posted on Apr, 11 2005 @ 01:12 PM
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Wow! This reminds me of Michael Chrichton's novel "Prey" nano-swarms. Good find!









Edit: On the "NEW posts" page, this story was written by "submission," are we supposed to vote?

[edit on 4/11/05 by poonchang]



posted on Apr, 11 2005 @ 02:28 PM
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I wonder what they'd use for data storage, that's another problem. Even if many terabytes of megs of data could be stored, using an array with each nanobot having a small bit of storage, over time, some of these bots will be damaged and fail. This mean any data on there could, at any time, become potentially corrupt, as well as it's operating code.



posted on Apr, 11 2005 @ 03:03 PM
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That's a good point, about the vulnerability of data.

I would say, have a few larger bots and put them on the network, and store the data across all of thema in a redundant way. Once one or two get knocked out, replicate.


Or... Instead of Nanobot Swarm, Construct a Megabot Monolith!



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