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MarKen Times
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Published by MarKen PPE Restoration
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More on Nano fabrics
Researchers hope the artificial muscle can be woven into firefighting gear and will seal its own pores when faced with a flash of
heat
Scan below with your smartphone to see a video related to this topic.
VOL #2 ISSUE #10
Experimental Nano fabric may
'seal' PPE against heat
Researchers hope the artificial muscle can be
woven into firefighting gear and will seal its
own pores when faced with a flash of heat
WASHINGTON — An international team of researchers has
created tiny artificial muscles that are 200 times stronger
than human muscle fibers of comparable size.
In the future, improved versions of the muscles could go into
the next generation of movers and doers, Discovery News
reported.
The moving parts in robots, airplanes and other mechanical
things are generally powered by motors.
Researchers around the world have been trying to create
artificial muscles that work more the way natural muscles
do, to allow for more delicate movements than mechanisms
can achieve.
Ray Baughman, a nanotechnology researcher at the University of Texas at Dallas, led the team that made the new muscle, which he sometimes calls a yarn because of the way it's
woven.
The muscles would work well in small medical devices, he
said.
His lab in Texas has thought of another creative use for
them, too.
"We've been playing with yarns to open and close blinds
depending on the temperature of the room," he told TechNewsDaily.
In the farther future, artificial muscles could give robots
more natural-looking facial expressions, Baughman said.
The lab wants to try to manufacture longer ropes of the muscle, so it can weave a protective fabric for firefighters' uniforms.
The fabric would automatically seal its pores when faced
with a sudden flash, Baughman said.
Baughman's new muscles are made of ropes of carbon nanotubes, a super-tiny, high-tech material that researchers are
adding to everything from water filters to experimental airplane parts.
Continued on next page……...
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Experimental nano fabric may
'seal' PPE against heat
Continued from previous page
Baughman said he and his team twisted the nanotubes "quite
similarly to the way people insert twists into common wool
or cotton fibers" into thicker yarns. They then filled the hollow space in the nanotubes with different materials, including paraffin, the wax that goes in candles.
To get the muscles to contract, researchers heated them
briefly. When heated, the paraffin wax expanded, pushing
against the nanotube walls and making them fatter and shorter.
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As the wax cooled again, it shrank, and the nanotubes became narrower and longer.
The muscles were able to shorten and then lengthen again
every 25 milliseconds, or 25 thousandths of a second,
Baughman said.
Such fast contractions mean the muscles are able to perform
a lot of work, he said.
The findings are published in the journal Science.
Copyright 2012 Asian News International (ANI).
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