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Nanotech Research Works Toward Artificial Muscles

An anonymous reader writes "Nanotech researchers are developing artificial muscles that convert chemical energy to mechanical energy. This ambitious project aims at making an artificial muscles from conducting polymers and carbon nanotubes that are chemically powered, like natural muscles, and exceed the force generation, contraction and speed of their natural counterpart. This work will lead to advanced limbs for amputees and robots."

14 of 127 comments (clear)

  1. Super strong muscles by nizo · · Score: 5, Funny
    ...exceed the force generation, contraction and speed of their natural counterpart.

    Strong muscles without the need to exercise. Sounds like a geek's dream come true huh? Except that one must keep in mind certain dangly appendages that could be torn off if you aren't careful with those new bulging biceps. And what about joints, could they handle the extra stress of markedly increased muscle strength? Like you go to pick up your car and your arms pop out of their sockets. Ouch.

    1. Re:Super strong muscles by ScrewMaster · · Score: 4, Informative

      Not just the lubrication: bone is a living material. But still ... electric motors with sealed oillite bearings operate for decades without maintenance. Of course, they don't have to withstand the tremendous peak forces that articulated joints do.

      I suspect there are probably a number of materials that would serve reliably in a replacement joint if they didn't have to function within the human body. Tissue rejection is a major issue, and that limits what you can put in there. Plus which human tissue is hardly chemically neutral, so I suppose you'd have to worry about corrosive effects as well. Titanium is used a lot (my Dad's pacemaker was made of the stuff) and is one of the few substances that isn't affected much by the environment of the body and doesn't trigger an autoimmune reaction. Or so his doctor told me.

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      The higher the technology, the sharper that two-edged sword.
  2. But the name... by Omega+Leader-(P12) · · Score: 4, Funny

    Myomer. It must be called Myomer.

  3. What about implants? by millennial · · Score: 5, Interesting

    Yes, I'm odd. This is the first thing that came to my mind. What if someone wanted to add a limb? I'm pretty sure it could be possible. We could construct a framework of artificial bone, build the artificial muscles and tendons, implant artificial nerves, and (much like when a person gets a limb transplant) graft it into the nervous system.

    I'm no expert in this field - I'm merely speculating. Feel free to totally bash my idea. Is this even possible, though?

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    I am scientifically inaccurate.
  4. We can rebuild him.. by MrFlannel · · Score: 5, Funny

    We have the technology. We have the capability to make the world's first Bionic man. Steve Austin will be that man. Better than he was before. Better . . . stronger . . . faster.

    --
    Clones are people two.
  5. This is Great for Baseball by syntap · · Score: 4, Funny

    Now the zillionaires don't have to take steroids to cheat! And they can afford to be early-adopters of muscle upgrade procedures!

    This sig is my best one.

  6. What happens to... by zwilliams07 · · Score: 4, Funny

    those muscle heads when they start pumping iron and they hit an Insufficient Memory error?

  7. Sounds more realistic by karvind · · Score: 5, Interesting
    This project sounds more realistic and well thought out than the Space elevator dream.

    Few issues which still need to be resolved:

    (a) How to place and grow nanotubes precisely ? Even after 14 years we struggle with that.

    (b) How does carbon nanotube interacts with biology in human body ? What are the side effects ?

    (c) Need to find an easy way of making conducting vs semiconducting nanotubes.

    (d) Fuel cell efficiency. They have only said that they can convert the chemical energy to mechanical energy, but how well ?

    (e) Ethical issue: This may not be a big deal if that person with artificial limbs can generate 100 times more force with no effort and break anyone's neck. But I am sure once we start augmenting human brain with more computational power (may be carbon nanotubes are faster than neurons, use them !!), then we may have to rethink !!

  8. Basic Mechanics by Baldrson · · Score: 4, Insightful
    While the carbon nanotube muscles can exceed the performance of natural muscle by generating a hundred times the force and elongating twice as fast, the contraction is less than one-tenth that of natural muscle. The conducting polymer muscles provide similar contractions to natural muscles, but have neither high cycle life nor high energy conversion efficiencies. The goal of the DARPA-funded program is to eliminate these problems and convert from electrically powered to chemically powered artificial muscles.

    It seems these guys haven't heard of the way you convert force to distance and vis versa.

    It's called the "leverage" and its used in everything from simple levers to pully systems.

  9. Amputees and SOLDIERS! by Colgate2003 · · Score: 5, Interesting

    The real driving force behind this research is the desire for a nano-enabled soldier of the future. They hope to use these as exo-muscles in combat suits to allow soldiers to literally "leap tall buildings in a single bound."

    The MIT Institute for Soldier Nanotechnologies is working on this right now, but they don't see it being available for use for 30 years or so. I recently attended a lecture at MIT entitled "Nanotechnology: From Promise to Profitablility" that was almost entirely focused on military applications.

    Amputees will certainly benefit, but that's not why the money is there for this research...

  10. Other Important Benefits by richardmilhousnixon · · Score: 5, Interesting

    I've been working with technology similar to this for the past year at University of Washington. I think a lot of people are overlooking some of the most important benefits of this type of actuator. Robustness is a very critical aspect of any mechanical device. With current hydraulics and pneumatics, a small dent or bend will render the entire device unusable. With an artificial muscle, half the device could be ripped off and it could still function with a limited capacity.

    Imagine a hydraulic actuator on a modern plane for instance. It would be nice to be able to still be able to control the aircraft's ailerons, flaps, rudder, and elevator even if significant damage occured to mechanical components.

    That's one of the biggest differences between man and man-made machines. People can be injured and keep going (watch any Arnold movie). A machine, on the other hand, is pretty much all or nothing (except in Arnold movies).

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    -- sometimes AND gates turn me on.
  11. What? by isny · · Score: 4, Funny

    No comments about modding your Real Doll (or robot girlfriend, etc.)? Get with it, people!

  12. The First Step... by potpie · · Score: 4, Interesting

    Has anybody read the Space Odyssey series? I don't remember which book it's in, but Arthur Clarke once talks about the history of the creators of the black boxes. They were a normal civilization that became extremely advanced and eventually built large ships that could take them all over the universe. But they could also incorporate the mechanics and electronics into themselves, and incorporate (from the latin "corpus, corporis, n." meaning body: particularly effective in this sense!) themselves into their machines until eventually, they were their own machines, constantly improving upon themselves. It goes on to explain that they were able to transcend matter entirely and exist in a way we cannot quite comprehend.

    Also, in the book 3001, Clarke predicts braincap machines that add the abilities of a computer to whoever wears them.

    I for one welcome the new experience of becoming the overlords of the universe. How long until we can transcend matter and build conscienceness-inspiring black boxes?

    --
    Esoteric reference.
  13. Advanced Limbs For Amputees by SuperGillies · · Score: 5, Funny

    I for one welcome our new paraplegic overlords.

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    sig not found. please replace sig.