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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."

127 comments

  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 scheme · · Score: 2, Interesting
      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.

      Which is why the next step is obviously artifical bones, ligaments, and tendons.

      --
      "When you sit with a nice girl for two hours, it seems like two minutes. When you sit on a hot stove for two minutes, it
    2. Re:Super strong muscles by Baron_Yam · · Score: 1

      Never mind the joints - if you tried to pick up a car or something you'd likely exceed the psi rating of the material upon which you are standing.

      Besides, joint research isn't so far behind artificial muscle research these days.

    3. Re:Super strong muscles by nizo · · Score: 1

      Isn't lubrication one of the big problems with artificial joints these days? They wear out, while natural joints are practically magic (containing fluid that is replenished that keeps everything moving smoothly).

    4. Re:Super strong muscles by VisualPolitics · · Score: 1, Insightful

      This is a welcome development, but the crucial developments for prosthetics is the interface with the nervous sysem.

    5. Re:Super strong muscles by Murphy+Murph · · Score: 1

      This article reminds me of a conversation I was having with my crew the other day...

      Marco: Robot body? No way! That goes against the natural order.

      Sparks: Well, you'd have the strength of five men.

      Marco: I got that now!

      Murphy: Not five men, five gorillas! But, since you're that strong, if you try to pet a kitten, you'd crush it.

      --
      I dub thee... Sir Phobos, Knight of Mars, Beater of Ass.
    6. 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.

      --
      The higher the technology, the sharper that two-edged sword.
    7. Re:Super strong muscles by Slinky+Puppet · · Score: 1

      Apparently it is still difficult to produce a strong and reliable join between titanium and bone. As a result it tends to be the interface that fails rather than the materials.

    8. Re:Super strong muscles by Ironsides · · Score: 1

      The main problem with making a joing between titanium and bone is that you don't want to wear the bone down. You could put the titanium right up against the bone, but the titanium would wear away the bone since there would be no lubrication (cartilige) between the titanium and bone. This is why artificial hips have a limited lifespan. The rubbery substance that goes between the artificial hip and the bone have to be replaced every now and then (10+ years or more i think). It's also why doctors don't like to replace hips in younger people (replacing hte hip rubber requires surgery).

      They can't make the rubber stronger or it will wear away the bone. If we could come up with a replacement that would fix itself, we would be all set.

      --
      Fly me to the moon Let me sing among those stars Let me see what spring is like On jupiter and mars
    9. Re:Super strong muscles by roseblood · · Score: 1

      Makes you wonder why they don't implant a metal cap/covering on the natural bone so it wont wear away - titanium on titanuium has to be less harmful than titanium on bone. Rubbery substance can rot to hell, but with the limited strees that human joints see a metal on metal joint should pass the test of time.

      --
      There are lies, damned lies, and statistics.
    10. Re:Super strong muscles by ikkonoishi · · Score: 1

      Except that the bone would still be touching the titanium in the cap...

    11. Re:Super strong muscles by AmberBlackCat · · Score: 2, Insightful
      Strong muscles without the need to exercise. Sounds like a geek's dream come true huh?

      I think men who paid for the super muscles instead of working out (and didn't have any missing limbs in the first place) would just be a laughingstock to people like me. They would be like girls who get their fathers to pay $3000 for them to get increasingly large breasts. A guy who had a much smaller body might be more appealing just for being more real.

      For people with less than two arms and two legs, this sounds good. I just hope it's used to help them and not used for military purposes.

      Another interesting thought, imagine if these things could be combined with nanomachines that are able to build the muscle material. The muscles could be programmed to get bigger, or programmed to automatically repair themselves. Large plastic breasts could never do that.

    12. Re:Super strong muscles by Ironsides · · Score: 1

      The cap would still rub against the bone, no matter how tight a fit they could make. You can't mold these things precisely to the bone until you have someone on the operating table, and they try to keep surgery time to a minimum. As it is, everything has to be pre-made from ultrasound type images and there is still "futzing" done during surgery to make a better fit. The caps just can't get a tight enough fit.

      --
      Fly me to the moon Let me sing among those stars Let me see what spring is like On jupiter and mars
    13. Re:Super strong muscles by Class+Act+Dynamo · · Score: 1

      Hesh: then i'll stay human
      Sparks: don't expect any mercy during the great robot wars
      Hesh: yeah, well have fun on the robot reservations, suckers! we're not gonna honor those bogus treaties!
      --pause--
      Sparks: he's right .. they will screw us.
      Marco: listen! its time to get serious.
      Captain Murphy: yeah enough of this talk, lets kill humans!

      --
      My other computer is a Jacquard loom.
    14. Re:Super strong muscles by penguinoid · · Score: 1

      Which is why the next step is obviously artifical bones, ligaments, and tendons.

      And brains.

      --
      Don't waste your vote! Vote for whoever you want, unless you live in a swing state it won't matter anyways
    15. Re:Super strong muscles by Anonymous Coward · · Score: 0

      So you put another cap to protect the bone from that cap. duh.

    16. Re:Super strong muscles by 2A · · Score: 0

      And what about joints

      How much strength do you need to roll a joint?

    17. Re:Super strong muscles by Leffe · · Score: 1

      Nanoboobs.

      That's what you can expect if such technology reached the market.

    18. Re:Super strong muscles by Lonewolf666 · · Score: 1

      Actually, bone will attach itself to titanium if the joining surfaces are NOT stressed for a few months. This makes it somewhat impractical for hip replacements, where you don't want to put the patient into bed for half a year.
      But it is routinely used for tooth replacement:
      In the first stage of the treatment, you will get a titanium "foundation" implanted in your jaw but not an tooth prosthesis on top of it.
      That "foundation" is left alone for some months, and you have to get along with the gap in your teeth.
      After the bone has solidly attached itself to the titanium implant, you see your dentist again and you will get an artificial tooth mounted onto the titanium part.

      --
      C - the footgun of programming languages
    19. Re:Super strong muscles by zero_offset · · Score: 1

      They would be like girls who get their fathers to pay $3000 for them to get increasingly large breasts.

      Some day you'll emerge from your mom's basement, squinting through your eyes at the blinding rays of full daylight, and soon thereafter you'll discover that it's usually HUSBANDS who are paying those $3000 surgery bills.

      --

      Slashdot quality declines as the number of hot grits posts decreases. - Provolt's Law, Apr-09-2005

    20. Re:Super strong muscles by Anonymous Coward · · Score: 0

      The penalty for killing a human is 1000 years frozen in carbonite!

      My nipples are hard just thinking about it...

    21. Re:Super strong muscles by Anonymous Coward · · Score: 0

      I dunno, I see a LOT of 16 to 20 year olds that get breast implants. I think that some of them actually get their parents to pay. Others work at strip clubs to pay for them (the ones over 18 anyway!)

    22. Re:Super strong muscles by jantangring · · Score: 1

      D'oh! Slaps forehead. Head flies off.

    23. Re:Super strong muscles by mOdQuArK! · · Score: 1
      think men who paid for the super muscles instead of working out (and didn't have any missing limbs in the first place) would just be a laughingstock to people like me.

      If the final product were better in all ways than the natural, then from my viewpoint I'd laugh at somebody who spent all their time working out to enhance their natural muscles and still failed to reach the performance & reliability of the artificial ones.

      Then again, until we can make self-repairing prosthetics (at least able to repair themselves as well as normal limbs), I'm highly doubtful that replacing perfectly good normal limbs with prosthetics will be very popular.

  2. But the name... by Omega+Leader-(P12) · · Score: 4, Funny

    Myomer. It must be called Myomer.

    1. Re:But the name... by Mr.Zong · · Score: 1

      Triple Strength or the regular old Inner Sphere Flavor?
      http://www.kerensky.tierranet.com/btech/mechlab/ot her.html
      Star Leauge for life.

    2. Re:But the name... by Anonymous Coward · · Score: 0

      ... it isn't mymoere. myomere is electrical, not chemical powered.

      it sounds more like shadowrun muscles...

  3. We're on our way... by confusion · · Score: 1
    Robocop, terminator, etc.

    I really do hope that this is turns into a viable solution for amputees. Combining this with the recent advances in nerve and motor control research should produce some very interesting products. I'm thinking a specialized appendage for using the mouse whilest I type. Then again, a USB port into the brain would be easier.

    Jerry
    http://www.syslog.org/

    1. Re:We're on our way... by RGTAsheron · · Score: 1

      USB? you can do better than that ;)

    2. Re:We're on our way... by confusion · · Score: 2, Informative
      Gotta start off small, you know. That way they can milk all the money from releasing USB1, then USB2, then firewire, then....

      Jerry http://www.syslog.org/

    3. Re:We're on our way... by Nik+Picker · · Score: 3, Funny

      until Ganny 1.0 gets her hip and wrist updates to 3.0 and then its a whole new ball game in the walmart january sales.. .

      picture the scene, you tentatively consider that new purchase so marvellously reduced in price when a voice cracks out behind you ....

      "move away from that sale counter sonny, put down the sale item and stand away from the counter. You have 10 seconds to comply..."

      yes its Granny 209 , shes armed and dangerous...

      --
      And thats why Firecrackers and kittens don't mix.
  4. Really? by Hodr · · Score: 3, Funny

    "This work will lead to advanced limbs for amputees and robots." But not necessarily in that order..

    1. Re:Really? by Olix · · Score: 2, Funny

      What about a secret group of government super agents, Deus Ex Style? Thats always been my secret dream. That and being an Albino.

  5. 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?

    --
    I am scientifically inaccurate.
    1. Re:What about implants? by SECProto · · Score: 1, Funny

      Connecting it to the nervous system, i would say would be the hardest part of this.

      Zaphod Beeblybrox anyone?
      At least they could get a realistic way for him to have 3 arms in the movie ;)

    2. Re:What about implants? by koko775 · · Score: 1

      But the limbs may take over their user's mind and drive him to build a reactor that would blow up New Y..oh, wait. Limbs aren't sentient. Sounds like a good idea, but would people be able to multitask with multiple limbs? They'd probably have to be born with it. Actually, though, the use of this *would* have applications where humans need to handle (handle, not transport) hazardous materials delicately
      .

    3. Re:What about implants? by CAIMLAS · · Score: 2, Interesting

      Your nervous system is not like your average computer, where you can swap out one component (say, a 2-bus RAID card) and put another one in (a 4-bus card).

      Your nervous system is intricately linked to every other part of your body: bones, muscles, balance, brain, immune system, skin - you name it. It has also grown with you for your entire life, adapting to the minute changes that take place throughout your body's growing and aging process. It subtly adapts to these changes. When a person grows too quickly, their nervous system often suffers. I know of a man that grew a full foot in a single year of his adolescence, and as a result his nervous system has given him a permanent "tick", resulting in him never being able to hold his hands steady (as someone shooting a gun, operating sensitive machinery, or performing an operation would require). Many people have varrying degrees of this 'unsteadyness' due to their rate of growth, as well.

      I imagine that if you were to actually be able to graft an artificial limb in place, it would still function much like a phantom limb - and that's if it's a proper replacement limb, not an 'extra' limb. I'd think an extra limb(s) would completely throw off a person's internal ballance ("chi", or whatever you want to call it), resulting in the limb being - at best - a clumsy, yet strong, piece of baggage.

      No, replacement or additional limbs probably aren't the fields of intended use of this technology - not for a good long time. The more immediate application of this technology is to use it for military purposes: mechanized infantry, at its finest. Forget tanks - a single 6', 240lb man, fully encased in a body suit would completely dominate against our modern "mechanized infantry". Aside from having immense lifting and movement advantages, they'd also probably have reactive armor and a full compliment (think: weapons locker) of weapons. Reactive armor, rocket launchers, built-in navigation systems, several thousand rounds of ammunition for an automatic rifle, half a dozen different supplimentary round types (grenade launcher, explosive rounds, armor-penetrating rounds, etc.), and God knows what else.

      --
      ~/ssh slashdot.org ssh: connect to host slashdot.org port 22: too many beers
    4. Re:What about implants? by Have+Blue · · Score: 1

      Slow down- Limb transplants are barely even experimental. I don't think we knew enough about the nervous system to do it yet.

    5. Re:What about implants? by ikkonoishi · · Score: 2, Interesting

      Actually the brain is remarably plastic when dealing with new inputs and outputs.

      For instance this little experiment.

    6. Re:What about implants? by millennial · · Score: 1

      Well, limb transplants, yes... but hand transplants are quite possible.
      http://www.cnn.com/HEALTH/9901/29/hand.transplant/
      This was back in 1999.

      --
      I am scientifically inaccurate.
    7. Re:What about implants? by Anonymous Coward · · Score: 0

      The basic drive of the human is to reproduce, and since fags can't reproduce, they compensate by fucking even more and harder. It's just too bad there isn't a lightbulb over their heads and a caption that goes :"Gee, maybe if I grew up a little and talked to women, maybe I wouldn't need to nail this teenage boy's penis to a 2x4 to get sexually aroused?"

    8. Re:What about implants? by Have+Blue · · Score: 1

      The article specifically mentions that there is no feeling in the hand, so I was correct that nerve reconnection is not yet within our capabilities (at least, as of 1999).

    9. Re:What about implants? by Maavin · · Score: 1

      So you want to surf pr0n sites AND use two hands on the keyboard ?

      interesting...

      --


      Crivens! I kicked meself in me own heid!
    10. Re:What about implants? by Antique+Geekmeister · · Score: 1

      "Implant artificial nerves" is wildly, wildly more difficult than you seem to realize. Even the various artificial sense organs, such as the retinal implants and brain implants to provide a semblance of vision, don't do direct sensing of the nerves. No one does yet, the electrodes available don't connect to individual neurons. Electrodes that do connect to individual neurons kill the neurons over time.

    11. Re:What about implants? by danila · · Score: 2, Interesting
      The problem is that many people have a very strong immune system in their brain. Just like we have leucocytes in our bloodstream protecting us from bacteria and viruses that our body deems harmful, those people have militant memocytes in their brain protecting them from new ideas and possibilities.

      Come other to your grandma and ask what she thinks about adding a 3rd arm to a person so that he can be more productive at work, more proficient in his hobby, for aesthetical reasons or so that he can masturbate while groping his girlfriend's tits. :) No offence if you have a counterculture hippy grandma that is heavily in bodymods, but I bet an average person would be strongly averse to the idea of extra limbs.

      This all can be very well structured in terms of Future Shock Levels as put forward by Eliezer Yudkowsky. "A Shock Level measures the high-tech concepts you can contemplate without being impressed, frightened, blindly enthusiastic - without exhibiting future shock." He suggests 5 levels (quoting):
      • SL0: The legendary average person is comfortable with modern technology - not so much the frontiers of modern technology, but the technology used in everyday life. Most people, TV anchors, journalists, politicians.
      • SL1: Virtual reality, living to be a hundred, "The Road Ahead", "To Renew America", "Future Shock", the frontiers of modern technology as seen by Wired magazine. Scientists, novelty-seekers, early-adopters, programmers, technophiles.
      • SL2: Medical immortality, interplanetary exploration, major genetic engineering, and new ("alien") cultures. The average SF fan.
      • SL3: Nanotechnology, human-equivalent AI, minor intelligence enhancement, uploading, total body revision, intergalactic exploration. Extropians and transhumanists.
      • SL4: The Singularity, Jupiter Brains, Powers, complete mental revision, ultraintelligence, posthumanity, Alpha-Point computing, Apotheosis, the total evaporation of "life as we know it." Singularitarians and not much else.


      Speaking of implants, an SL0 person is probably comfortable with replacing a bone or a joint. SL1 is ok with artificial limbs for those who have something happen with the originals. SL2 would not mind replacing perfectly good natural hands. SL3 would agree with going away with the humanness requirement for the body and just using something that suits the task well. And an SL4 accepts we don't need a body at all.

      So what you are suggesting is completely impossible today and perfectly possible in the medium-term (10-50 years). However the reaction to your proposal is not determined by the feasibility of the idea, but by the population of anti-memes in the brain of the listener.
      --
      Future Wiki -- If you don't think about the future, you cannot have one.
    12. Re:What about implants? by millennial · · Score: 1

      True, but it did mention that he was capable of wiggling his fingers. Lack of feeling doesn't indicate lack of nerve connection. Nerves do a lot more than feel. They sense pain, trigger muscles, and help regulate our bodies.

      --
      I am scientifically inaccurate.
    13. Re:What about implants? by Deideldorfer · · Score: 0

      I'm thinking a prehensile tail might not be so clumsy. And it would only be in the way when you try to sit down.

      --

      Power off before disconnecting connecting connector. Seen on a cash register
  6. Artificial muscle == holy grail by Roland+Piquepaille · · Score: 2

    Scientists have been researching artificial muscles for decades now. The need for linear actuators with fast response times, almost friction-free force-less movements and power varying as a function of their lengths, is great.

    The best they could come up with for powerful movements is this pneumatic device, which is a braided sleeve with a rubber balloon inside: when the balloone expands, it pulls the fibers in the braided sleeve apart, and therefore the overall length of the device shrinks and the device fattens. When the pressure is let off, the device becomes long and thin.

  7. Does Will Smith know about this? by William+Gates+IV · · Score: 0

    Cuz he doesn't like em' bots...

    --
    --
  8. humm by Ambient_Developer · · Score: 1

    So when can I retro-fit my Robosapien with these?

    1. Re:humm by Ambient_Developer · · Score: 1

      Nothing like getting your butt kicked by a 35cm human like midget :-).

  9. Something similar by Anonymous Coward · · Score: 1, Interesting

    Well, I used to play with Flexinol, which is a memory alloy. Not really the same technology, but it was fun playing with this stuff.

  10. 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.
    1. Re:We can rebuild him.. by Nik+Picker · · Score: 1

      you git...
      you utter complete git
      you total absolute and complete bastard.
      .
      .
      .
      Ive now got the theme tune to the Bionic man inside my head now and It wont stop. To top it all i re read the artical and all i could see in my minds eye was frame stepped slow motion and the gchzk gchzk gczk boing boing judder sound effects playing in my minds inner ear ! im not going to sleep now.

      Still at least it can claim to have a theme tune more memorable than flake , sorry Jake 2.0.

      --
      And thats why Firecrackers and kittens don't mix.
  11. 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.

    1. Re:This is Great for Baseball by harishpa · · Score: 1

      Seriously though, this is a major concern for competitive sports as a whole. Testing will become a very complex process.

    2. Re:This is Great for Baseball by FleaPlus · · Score: 1

      I'm also curious to see if this sort of technology will be banned outright, or be allowed in certain circumstances. For example, what if somebody is injured and they make use of this technology to recuperate?

    3. Re:This is Great for Baseball by mattyrobinson69 · · Score: 1

      If its a leg, say, make it only as good as the original leg (you'd fall over lots if one leg was better than the other anyway)

    4. Re:This is Great for Baseball by mattyrobinson69 · · Score: 1

      metal detector?

      xrays as part of drugs tests?

  12. Oc Me! by Doc+Ruby · · Score: 1

    I don't want to amputate before I get an extra couple pairs of arms - Doc "Oc" Ruby.

    --

    --
    make install -not war

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

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

    1. Re:What happens to... by Anonymous Coward · · Score: 0

      Oh, obviously they will see a Blue Screen of Death...

  14. mnb Re:Super strong muscles by Anonymous Coward · · Score: 2, Insightful

    My truck is currently on jackstands.
    The four of them combined have less surface area contacting my driveway than one of my Euro sized 45 shoes.

    1. Re:mnb Re:Super strong muscles by kesuki · · Score: 3, Interesting

      Grand parent could have been assuming you were standing on the grass, or could have been referring to your shoes... however you're entirely correct, concrete and asphault can easily withstand the psi of a person picking up even a bus... you don't run into a problem with ground deformation (beneath asphault) until you exceed 40 tons/Sq inch so, unless you're picking up a 400 ton dump truck, you're not at issue with PSI ratings. oh hey, and if you want to walk without deforming the ground a solid inch of tempered steel will do for single, loaded 400 ton truck, but you'd need titanium to handle a loaded 400 ton truck in EACH hand. (this assumes of course your bones are made of solid titanium, and your tendons are made of carbon nanotubes)

    2. Re:mnb Re:Super strong muscles by Dr.+Manhattan · · Score: 1
      concrete and asphault can easily withstand the psi of a person picking up even a bus... you don't run into a problem with ground deformation (beneath asphault) until you exceed 40 tons/Sq inch so

      Cool! Now try balancing that load.

      And when you walk, the weight shifts dynamically, and can get focused on just a few square inches. (Or less, if you're Wonder Woman and wearing heels.) I'd expect a lot of crappy roads wouldn't handle that well.

      Besides, the bus probably isn't designed to be supported by a few square inches, and your hands will likely punch through in fairly short order. No, what we really need for this problem is telekinesis, or at least strong magnetic fields. Maybe wind control...

      --
      PHEM - party like it's 1997-2003!
  15. 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 !!

    1. Re:Sounds more realistic by myukew · · Score: 1

      e) fortunatly with our new gadget-brains we can rethink twice as fast!

  16. 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.

    1. Re:Basic Mechanics by k98sven · · Score: 1

      Perhaps you should read up on some basic mechanics?

      This has nothing to do with leverage. Leverage is when you have a lever, or rather, torque. It is not a general 'force to distance'-converter.

      And there's nothing in the article talking about torque. They're talking about longitudal force versus longitudal contraction. No torque involved, and no leverage.

    2. Re:Basic Mechanics by wtmoose · · Score: 1

      >This has nothing to do with leverage

      It has everything to do with leverage. How do you think your own muscles move your limbs? Through leverage. If your bicept, for example, were to be attached ten times closer to the pivit point of your elbow, your muscle would need to exert ten times the force in order to do the same work. At the same time, it would only contract one tenth as much.

    3. Re:Basic Mechanics by k98sven · · Score: 1, Flamebait

      If your bicept, for example, were to be attached ten times closer to the pivit point of your elbow, your muscle would need to exert ten times the force in order to do the same work.

      First off, it's biceps. And the biceps acts in the opposite direction, the fulcrum in that case would be the shoulder, not the elbow. And what you are describing is a fucking arm not an individual muscle. Muscles contract lengthwise. That's all they do. Go get an anatomy textbook. You need one.

      How is your reading comprehension? Was this article (or quote thereof) referencing an 'artificial arm'? No. It was talking about an artificial muscle. A fiber which can contract lengthwise, exerting a force, just like a muscle.

      So they, in the article are comparing the force and contraction by some strands of this material, and comparing that to the the force and contraction exerted by a similar amount (by weight or thickness, it doesn't reveal) of natural muscle.

    4. Re:Basic Mechanics by SpeleoNut · · Score: 2, Informative

      Muscles do contract lengthwise but the force at the molecular level is driven by a lever arm, namley myosin. As such, all of the muscle filaments stay the same length and do not contract merely "slide" over each other.

      --
      rnadom txet for a sngrutaie
    5. Re:Basic Mechanics by Baldrson · · Score: 1
      If you want to pick nits here we go:

      Dimensional analysis shows that distance * force has two interpretations: energy or torque. If we're varying the distance over which a given energy is expended, we're talking about a reciprocal relationship due to the conservation of energy. All they need to do to convert that large force over a small distance into a smaller force over a larger distance is use something like a pully system. Now, I'll agree, once we start talking about pullies, it is time to start talking about torque, but really, you shouldn't try to pick nits with an idea that is fundamentally correct unless you're going to admit that you are picking nits rather than debunking an idea.

      Oh, and I'm not really even picking nits here -- you really didn't get the idea and you should have.

    6. Re:Basic Mechanics by Bloater · · Score: 1

      and anyway, they can just have a couple of pulleys instead and extend the length of the muscle through the pulleys, over and over.

    7. Re:Basic Mechanics by Zerth · · Score: 1

      Apparently you need to get an anatomy textbook, as well.

      Biceps move the lower arm, not the upper.

      How the biceps/triceps act

    8. Re:Basic Mechanics by FleaPlus · · Score: 1

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

      I'm sure they have. Problem is, things like that tend to greatly increase the complexity of the system, and much of the appeal of this is its simplicity and resilience.

    9. Re:Basic Mechanics by k98sven · · Score: 1

      Biceps move the lower arm, not the upper.

      Yes, it does. And when it does that, where is that force acting from, in mechanical terms? The shoulder.

    10. Re:Basic Mechanics by Antique+Geekmeister · · Score: 1

      You read up first. Almost all joint machine is through muscular contraction applied to rigid elements, the bones. The points at which the muscles attach to the bone form lever arms, and the strength of the force from the muscle times the length of the attachment from the joint itself, divided by the length of the limb, gives the available force at the end of the limb. There are a few exceptions, such as the tongue muscles, but mostly they move joints.

    11. Re:Basic Mechanics by Anonymous Coward · · Score: 0

      If you're making artificial limbs, you don't need anything fancy, you're using leverage anyway. As another poster mentioned, just move the attachment points closer to the joints.

    12. Re:Basic Mechanics by Anonymous Coward · · Score: 0

      "fulcrum" means "pivot about which the lever turns". Is there another meaning?

  17. Yes, you're very odd. by VisualPolitics · · Score: 0, Troll

    Maybe you could use your artificial limb to masturbate and no one would know you're doing it because both hands were above the table! Hmmm. I suppose I'm a bit odd too.

  18. 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...

    1. Re:Amputees and SOLDIERS! by foniksonik · · Score: 3, Interesting

      And this surprises you somehow?

      Nearly every major leap in technology in every discipline has been funded for and by the US military.

      After the fact it is commercialized and improved upon so as to become a consumer attractive product, meaning smaller, more energy efficient and less buggy... iteratively over several generations so that by the time we see it it doesn't look anything like the original.

      The latest trend is for the military to start buying these cheaper more efficient versions from commercial suppliers... but the original tech is still developed early by the military and military contractors/university programs.

      --
      A fool throws a stone into a well and a thousand sages can not remove it.
    2. Re:Amputees and SOLDIERS! by Anonymous Coward · · Score: 0
      The latest trend is for the military to start buying these cheaper more efficient versions from commercial suppliers... but the original tech is still developed early by the military and military contractors/university programs.

      Or to not buy it, in the case of vehicle and body armor.
  19. Triple Strength Myomer by Mukaikubo · · Score: 2, Funny

    Plus, this stuff is just the thing for helping me bury the hatchet in the cockpit of an annoying Jenner.

    1. Re:Triple Strength Myomer by CAIMLAS · · Score: 1

      Mechwarrior/battletech reference...?

      --
      ~/ssh slashdot.org ssh: connect to host slashdot.org port 22: too many beers
    2. Re:Triple Strength Myomer by Mukaikubo · · Score: 1

      *Very* Battletech.

    3. Re:Triple Strength Myomer by Headw1nd · · Score: 1

      No!! It's a trick by House Davion! The myomer is defective!

  20. 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).

    --
    -- sometimes AND gates turn me on.
    1. Re:Other Important Benefits by aero2600-5 · · Score: 1

      "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)."

      Eh, in most of the Arnold movies I've seen (3 out of 5), Arnold is a machine that gets injured and keeps going. Didn't he even cut out his own eye in the first one? I'd call that one hell of an injury. And he kept going.

      Aero

      --
      Please stop hurting America -- Jon Stewart
    2. Re:Other Important Benefits by richardmilhousnixon · · Score: 1

      I know, I know. Arnold, man OR machine, just keeps on going. No one can stop him.

      --
      -- sometimes AND gates turn me on.
    3. Re:Other Important Benefits by Kiryat+Malachi · · Score: 1

      Obviously, we don't need artificial muscles, we need artificial Ahnolds!

      There's a terrifying thought. Imagine that wherever you turned, wherever you looked, all you saw was more Arnolds. (If you need help imagining this, just think back to the California recall.)

      --

      ---
      Mod me down, you fucking twits. Go ahead. I dare you.
      (I read with sigs off.)
    4. Re:Other Important Benefits by jdgeorge · · Score: 3, Funny

      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).

      After I learn all about biology by watching Arnold Schwarzenegger in "Total Recall", I plan to learn all about space travel by watching Bruce Willis in "Armageddon".

    5. Re:Other Important Benefits by Headw1nd · · Score: 1

      It would increase the robustness of aircraft control systems significantly by allowing them to operate in parallel- simply having each individual control surface with its own muscle, rather than being component of a hydraulic system, which eliminates the possiblilty of a catastrophic system-wide failure (of that type).

    6. Re:Other Important Benefits by chainsaw1 · · Score: 1

      Lookup the A-10. It has massive parallel systems. One warthog in Desert Storm (IIRC) had it's hydraulics and backup hydraulics damaged. It still managed to return home using the tertiary manual control.

      --
      - Sig
  21. Upgrade your arms! by Tetsugaku-San · · Score: 1

    Will also lead to people upgrading their muscles on the black market to me - our dystopian cyberpunk future just got one step close

    Wooooo!!!

    1. Re:Upgrade your arms! by Killjoy-Modus · · Score: 1

      Weird-assed natural disasters, monolithic multinational megacorporations, total environmental meltdown, cashcows in high-level government positions.... Heh. Look around. Cyberpunk is now.

      --
      A sig is just a sig, unless you can shoot it. Sig Steyr, for the distinguishing CT.
  22. What? by isny · · Score: 4, Funny

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

    1. Re:What? by DigiShaman · · Score: 0, Redundant

      Yes!!!! Now were talking! But the damn thing better not short out on me while going giving me a BJ.

      --
      Life is not for the lazy.
    2. Re:What? by Anonymous Coward · · Score: 0

      I don't know about you, but I dislike the idea of my realdoll being able to kick my ass...
      Theorically speaking of course, not that I owe one.

  23. Don't forget the killswitch by FusionDragon2099 · · Score: 0

    Can't let those super-soldiers go astray with their consciences, can you?

  24. Biological solutions are better by Anonymous Coward · · Score: 1, Insightful

    Once again, this is another example of our medical-industrial complex trotting out a non-biological approach to solving a problem that a biological approach is better.

    Having bionic arms using nanotubes and nanotech-based muscle is fine. Figuring out how regeneration such that the body can be made to grow new arms is better.

  25. 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.
    1. Re:The First Step... by bar-agent · · Score: 1

      Well, judging from Star Trek, I'd say sometime in the 25th century. Crusher was a pioneer in this area.

      --
      i'd hit it so hard, if you pulled me out you'd be the king of britain [bash.org]
    2. Re:The First Step... by Drantin · · Score: 1

      "conscienceness-inspiring" ?

      Hats that make the wearer extremely moral?

      or consciousness-inspiring?

      or perhaps you meant some kind of cognition-enhancing hat?

      --
      Actio personalis moritur cum persona. (Dead men don't sue)
  26. Neuromorphic tail by FleaPlus · · Score: 2, Interesting

    Check out these folks, who put together a prehensile robotic tail. The apparatus registers EMG signals from skin electrodes and uses them to control the tail.

  27. Advanced Limbs For Amputees by SuperGillies · · Score: 5, Funny

    I for one welcome our new paraplegic overlords.

    --
    sig not found. please replace sig.
    1. Re:Advanced Limbs For Amputees by Anonymous Coward · · Score: 0

      The Nebulons are coming! The Nebulons are coming!

  28. Imagine the new spam by syntap · · Score: 2, Funny

    I'm sure this can be twisted to somehow upset v|agr@ as the top spam subject.

    My best sig is this one.

    1. Re:Imagine the new spam by Killjoy-Modus · · Score: 1

      "Mr. Studd Implants -- will never go limp on you. Now with self-sealing adhesive action!"

      --
      A sig is just a sig, unless you can shoot it. Sig Steyr, for the distinguishing CT.
  29. Imagination by Easy2RememberNick · · Score: 1

    For some reason when I read that I imagined the sound of Timpani drums, an experimental aircraft dropping from a B-52 and then a crash in the desert. After that a catchy salsa beat and a red and white track suit.

  30. Ghost in the Shell by one_n_only_wildcat · · Score: 1

    Can this be far off? The applications for Sci-Fi writing are enormous. 1st: This is motivated for military application (and thereby for the service of the "elite") 2nd: Does anyone think that your company insurance plan will be covering body transplants in the near future? 3rd: Who would be allowed access to quality parts? p.s. Here is the UTD press release: http://www.utdallas.edu/news/archive/2005/darpa-gr ant.html

    --
    "Something unknown is doing we don't know what." - Sir Arthur Eddington
  31. Amputees only? by tedrlord · · Score: 2, Funny

    I guess this means that I'm going to have to find a nice lumber mill to work in, preferably one with a really good health plan. Actually, I should probably wait until they figure out adamantium.

    --
    [insert witty quote here]
  32. Is this a follow up by adeydas · · Score: 1

    Is this a follow up of the blood made of nano-tubes thing that came out a few months ago?!

  33. Today, synthetic muscle... by Killjoy-Modus · · Score: 1

    Tomorrow, Motoko Kusanagi :-D

    --
    A sig is just a sig, unless you can shoot it. Sig Steyr, for the distinguishing CT.
  34. It's good to know by Anonymous Coward · · Score: 0

    you freebirth toads could be in a position to battle the clans with omnimechs!

  35. I'll get you next time A'nold by sl4shd0rk · · Score: 1

    Wit deese new muscula implaants, I can beat you een de next election and den go on to rule de wood. muhahahahahaha

    --
    Join the Slashcott! Feb 10 thru Feb 17!
  36. nanostuff toxicity?! by zanderredux · · Score: 1
    while the benefits of this technology are undeniable, what if a robot, machine or artificial limb gets broken or explodes?

    Wouldn't this release a lot of nanostuff into the air or the waterflow?

    Couldn't this be extremely poisonous to biological life and be very hard to remove from the environment, since nanostuff would not decay? What if this breakage happens in a industrial facility? Would we get the nasty effects of a chemical contamination (like Union Carbide's Bhopal mess-up) with the transmissible and hard-to-decay characteristics of a, say, mad-cows's prions?

  37. The best advance for amputees in the near term by multiplexo · · Score: 1
    would be a means of grafting titanium or another metal into bone and having it protrude from the body without the possibility of infection. Lower limb prosthetics are suspended with either straps, friction sleeves, various vacuum locking systems or some combination. I've used both friction sleeves and a vacuum system (left leg, below-knee amputation) and while these work pretty well there are issues with proprioception of the prosthetic limb. Implanting a post that the prosthetic could be attached to would increase proprioception, thus making it easier to manipulate the artificial limb. It would also reduce if not eliminate the problems that amps have with skin breakdown in their sockets and the need to add or remove padding from your socket during the day as your residual limb (stump) shrinks or expands.

    I have heard of some work that was done with this for upper body prostheses, but it was not load bearing, so there's still a lot of work to do.

    Of course you also need to educate insurance companies about the value of a good prostheses. I find it amazing that there are insurance programs out there that will provide full coverate for all sorts of horrible life threatening diseases, even if there is little chance of recovery, but will not cover prosthetics and orthotics.

    --
    cheap labor conservatives - they want to keep you hungry enough to be thankful for minimum wage.
  38. Re:fuc4!? by transami · · Score: 1

    You are absolutely disrepectful and should be banded from posting.

    --
    :T:R:A:N:S:
  39. Last Post! by Anonymous Coward · · Score: 0

    Last Post!