Artificial Muscle Material Is Self-Healing, Super Stretchy
Stanford researchers have created a rubberlike type of plastic known as an elastomer that twitches when an electrical field is applied, repairs itself when punctured and stretches to 100 times its original length.
Artificial muscles currently have applications in some consumer technology and robotics, but they have shortcomings compared to a real bicep, Bao said. Small holes or defects in the materials currently used to make artificial muscle can rob them of their resilience. Nor are they able to self-repair if punctured or scratched.
But this new material, in addition to being extraordinarily stretchy, has remarkable self-healing characteristics. Damaged polymers typically require a solvent or heat treatment to restore their properties, but the new material showed a remarkable ability to heal itself at room temperature, even if the damaged pieces are aged for days. Indeed, researchers found that it could self-repair at temperatures as low as negative 4 degrees Fahrenheit (-20 C), or about as cold as a commercial walk-in freezer.
The team attributes the extreme stretching and self-healing ability of their new material to some critical improvements to a type of chemical bonding process known as crosslinking. This process, which involves connecting linear chains of linked molecules in a sort of fishnet pattern, has previously yielded a tenfold stretch in polymers.
The team found that they could tune the polymer to be stretchier or heal faster by varying the amount or type of metal ion included. The version that exceeded the measuring machine’s limits, for example, was created by decreasing the ratio of iron atoms to the polymers and organic molecules in the material.
The researchers also showed that this new polymer with the metal additives would twitch in response to an electric field. They have to do more work to increase the degree to which the material expands and contracts and control it more precisely. But this observation opens the door to promising applications. (View video.)
In addition to its long-term potential for use as artificial muscle, this research dovetails with Bao’s efforts to create artificial skin that might be used to restore some sensory capabilities to people with prosthetic limbs. In previous studies her team has created flexible but fragile polymers, studded with pressure sensors to detect the difference between a handshake and a butterfly landing. This new, durable material could form part of the physical structure of a fully developed artificial skin.
Gamers and science fiction readers are familiar with the idea of artificial muscle fibers. In Battletech, the giant robot "mechs" are powered by an artificial muscle called "Myomer", a fibrous material consisting of microscopically thin tubes filled with a substance (acti-strandular fiber) that contracts when voltage is applied.
Via Stanford Research.
Scroll down for more stories in the same category. (Story submitted 11/14/2016)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 0 )
Related News Stories -
Smellicopter Combines Live Moth Antenna With Mechanical Drone
'The organic tissue is inserted in the master tank and then sealed.' - Philip K. Dick, 1955.
DARPA's Virtual Caves Explored By Virtual Robots
'If there's anything in here worth looking at, these pups'll find it.' - Ridley Scott, 2012.
Samsung Gets Transparent Smartphone Patent
The Transparency of Things to Come
Jet-Powered Flying Suits Tested By Navy
'With his motor in operation, he moves like a diver, head foremost...' - Philip Frances Nowlan, 1928.
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
Las Vegas Tunnels To Have Autonomous Teslas
'...just a steady velvety whirr as the taxi sped along.'
TCL CSOT 17-Inch Printed OLED Scrolling Display
'..a wide sheet of clear material suddenly flared with light and swirling colour.'
Reachy Humanoid VR Teleoperation App
"I went to the control room where the three other men were manipulating their mechanical men...'
Unitree A1 Robot ala Black Mirror and Snow Crash
'The legs are long, curled way up to deliver power...'
DALL-E Makes Creative Images From Text
Okay, sf fans. If you could have some art created from a science fiction sentence, what sentence would you pick?
BladeBUG Robots Clean Massive Wind Turbine Blades
'There were the cleaners, with large padded feet, who were apparently polishing their way the whole length...'
Looms To Manually Weave Lunar Rover Wheels
It's fascinating to me how the Apollo program forced people to think outside their usual boxes.
IceBot Antarctic (Planetary?) Robotic Explorers Made Of Ice
'Some will combine in place to form more complicated structures, like excavators or centipedes.'
Glad 2020 Is Over
Maybe you missed one of these?
PEDOT Polymer Could Enhance Brain-Machine Interfaces
'the hair-fine wire going deep into Owen's brain, down into the pleasure center.'
Study: Robots Encourage Humans To Take Risks
Not exactly Three Laws compliant.
Kinetic Buildings And Psychotropic Houses
'There was a dim whirring, and the spheres tipped and began to rotate...'
Jupe Urban Escape Pods Have Tesla, SpaceX Roots
'The houses are prefabricated units... and they sell at the flat rate of five hundred dollars a room — set up.'
Best Robot Dance Video Of 2020
'I can Mashed Potato... I can do the Twist.'
Vertical Farm In Singapore's Output Is 1.5 Tons Per Day
'A towering eighty-story structure like the office "In-and-Out" baskets stacked up to the sky.'
3D Printed 'Blisk' Manufactured In Orbit
'It can be mass-produced only in the orbiting factories...'
More SF in the News Stories
More Beyond Technovelgy science news stories