First Liquid Machines Presage Soft Robots 42
KentuckyFC writes "The technology behind the T-1000 assassin in the Terminator movies might as well be science fiction as far as modern manufacturing is concerned. But we're making progress — thanks to some work by Chinese engineers who have perfected a way to make liquid metals assume various shapes and switch from one to another with the flick of a switch. These guys placed a thin film of gallium-indium-selenium alloy (melting point 10.5 degrees C) in water and applied an electric field. The balance between the surface tension of the metal and the electric forces on its surface then caused the metal to form a ball. They can move the sphere around, combine it with other spheres, and even use it to rotate the water. The engineers say this is the first step toward smart liquid machines that can assume almost any shape. And since the alloy is biologically benign, these machines could be used with, and even inside humans. Their next goal is to create a set of parallel electrodes that cause the metal to form into an undulating worm-shape that can propel itself along."
Really? (Score:1)
A knife is also biologically benign, just not mechanically.
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So are ice cubes, term papers and elephants. What's your point?
Really? (Score:5, Funny)
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But it will be. It will be.
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Time travel: it will have been. It will have been. (Or using the H2G2 tenses: it willen haven been a documentary, unless there's a special tense for time travel to protect you own grandfather.)
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Afterwards the machines turn us into batteries. Then keanu reeves is born and makes peace with the machines. Then we leave the planet behind in a ship called Galactica to find a new home. The machines stay behind, rename the planet cybertron, and themselves how to turn into cars and trucks. They start fighting with themselves and end up crash landing in new, new, new, new. new, new. new. new, new york and history repeats all over again.
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You probably did not notice it when you were composing or editing the submission, but you wrote that the technology behind the T-1000 "might as well be science fiction." The T-1000 is indeed science fiction.
Since the phrase "might as well be" is used to describe a situation that is not actually true, but is used in the summary to describe a situation that actually is true, it reads as a quite silly.
In fact, the first line of your post, "yes, 'really,'" reads as
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"The technology behind the T-1000 assassin in the Terminator movies might as well be science fiction"
Might it? Might it really?
Or it might be pop-media drivel written to draw money from moviegoers without any actual science or fiction (much less both)
Robotic Dildos hardest hit. (Score:2)
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Their next goal is to create a set of parallel electrodes that cause the metal to form into an undulating worm-shape that can propel itself along." .... and somewhere, porn of this does exist.
ftfy
How about that (Score:2)
And here I thought the explanation of how the T-2000 worked sounded like utter bullshit when I saw the movie, requiring suspension of disbelief. Except, of course, this stuff doesn't turn completely solid.
Re:How about that (Score:5, Interesting)
I can't get to the link and know no more about this metal except from the summary, but it sounds like it would be solid below 10.5 C - Not that cold. With sufficient sophistication (i.e. FAR beyond turning into a ball), you could imagine some solid "cool" pieces with "warm" joints.
But then again, with "sufficient sophistication," 3-d scanners/printers and electron microscopes could give us teleportation and/or human duplication capabilities. Yep, sci-fi and suspension of disbelief. But the idea that we might be so advanced that we could build pneumatic tubes as a means of trans-Atlantic message passing seemed impossibly advanced 150 years ago. And we beat the hell out of that one.
[Yeah, I realize I just posted 3 "buts," all of them big. Well, I like big "buts" and I cannot lie.]
video (Score:2)
Is there a video of this somewhere? The links do not show much of the process.
first step (Score:2)
In these examples the machine is outside the metal. The liquid metal is just a passive substance being manipulated and moved. It will be something when the manipulation device itself is mutable.
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You could conceivably imagine a non-mutable core in charge of external communication and manipulation.
And it's totally scalable! (Score:2)
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Yes, 5 years, just in time for the holographic storage to hit the shelf, too.
Re:And it's totally scalable! (Score:5, Funny)
The time of holographic storage is NOW! Take a hologram, toss it in a filing cabinet, and that cabinet is now holographic storage.
not so new (Score:2)
Soft robots have been with us for decades. [youtube.com]
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I came here to say this. Except your example is horrid - putting a fuzzy plush covering over a normal robot does not make it a "soft".
There has however been a fair amount of research into various soft-material robots, mostly using pneumatics or electro-stimulated plastics to provide motive forces. A crude tentacle:
http://www.youtube.com/watch?v... [youtube.com]
Then there's the robots which are technically "hard", but have so many degrees of freedom they appear "soft", like this "elephant-trunk" with semi-soft conformin
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Yeah, and I doubt a liquid alloy would remain alloyed for long within a biological system that selectively absorbs some of the components. After all an alloy is *not* a chemical compound.
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I'm sure at least one strong oxidizer exists in our body that could pull the Gallium off and make Gallium Oxide. No way that could go wrong.
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Well, there's exactly one oxidizer that is capable of creating oxides - oxygen, which happens to be one of the strongest oxidizers commonly encountered. Well, I suppose any oxidizer which contains ionicly-bound oxygen could do the job, but I'm not sure there's actually many oxidizers stronger than monoatomic oxygen,and a compound would require that gallium be a stronger reducer than whatever the oxygen was initially bound to.
Oxidation is deceptively named for historical reasons, but in modern chemistry any
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There are a lot of other oxidizers that can create oxides. Potassium permanganate and ozone (O3) are two such highly reactive oxidizers. Ozone obviously is still just oxygen, but it's far more reactive than diatomic oxygen.
The Gallium (I) oxide is a very strong reducing agent, so that could theoretically set off a reaction. The Ga(III) oxide is far more common...but as you pointed out a lot more than just the oxides can be formed. The oxide is just one I know off hand as a bit dangerous.
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"Gallium and gallium compounds may cause metallic taste, dermatitis and depression of the bone marrow function. Large doses may cause hemorrhagic nephritis. "
From the MSDS from Gallium (I) Oxide
Tin Foil Hat Time (Score:2)
There's a real UK military project called Skynet, and now we have liquid metal robots. Time to be officially freaked out.
Wow... (Score:2)
Deja Vu [youtube.com].