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 |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 0 )

Related News Stories - (" Engineering ")

Jet-Powered Flying Suits Tested By Navy
'With his motor in operation, he moves like a diver, head foremost...' - Philip Frances Nowlan, 1928.

Pub Installs Electrified Fence Around Bar
'I start twelve immensely strong wires--naked, not insulated --from a big dynamo...' - Mark Twain, 1889.

Armano Remote Control Excavator
'The bulldozer moved through the... mine... ' - Niven and Pournelle, 1981.

Metalenses Now Reconfigurable With Liquid Crystal
'Hufhuf oil held in static tension...' - Frank Herbert, 1965.

 

Google
  Web TechNovelgy.com   

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.

 

 

 

 

 

Current News

Jet-Powered Flying Suits Tested By Navy
'With his motor in operation, he moves like a diver, head foremost...'

Pub Installs Electrified Fence Around Bar
'I start twelve immensely strong wires--naked, not insulated --from a big dynamo...'

What Does A Tesla Full Self-Driving Car See?
'All objects within my panoramic gaze trembled and vibrated like quick motion pictures...'

BioVYZR Is Ready, Anti-Covid19 PAPR Lovers
'Some clad in the insulated space-suits, with their transparent glassite helmets.'

Tesla Will Have Metal Gear Snake Autocoupler, Musk Confirms
'Its motion was so swift, complex, and perfect that at first I did not see it as a machine, in spite of its metallic glitter.'

Starlink Satellites Leading Edge On-Orbit Debris Mitigation
Propulsion-assisted orbital decay, brought to you by SpaceX.

Healight Ultraviolet Endotracheal Device Has Covid-19 Treatment Potential
'He applied the tip of the instrument to the interior of the wound...'

Parents Use AI To See One Last Message From Their Deceased Son
'...what's to keep me from showing face, Man?'

Satoshi Tomizu Creates Pocket Universes And Worldcraft Bubbles In Glass
'The Worldcraft bubble glittered, catching the light...'

Space Hero Inc. Offers Trip To ISS As Reality Show Prize
'This is Elmer Schmitz, presenting to you the finalists in our Aviation Quiz Program...'

I Love Ceiling-Mounted Robots
'Immediately an enormous apparatus fell on to her out of the ceiling...'

Armano Remote Control Excavator
'The bulldozer moved through the... mine... '

OK, NASA 3D Printer Of Food Not Yet Star Trek Food Synthesizer
Maybe not, but we're seeing definite progress.

Kelly Clarkson Show Like Black Mirror '15 Million Merits'
'These people are pieces of software called avatars.'

Salto Jumping Robot Now Sticks Landing!
'Lucky touched the leap knob and the hopper's leg retracted.'

Gyroscopic Median-Straddling Mass Transit Vehicles
'It was among these leviathans that the little gyrocar was daring to thrust its puny self...'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.