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 ")

Wear Your Self-Powered Generator
'It's basically a micro-sandwich...' - Frank Herbert, 1965.

Auto-Focus Smart Glasses Have Liquid Lenses
'Hufhuf oil held in static tension by an enclosing force field within a viewing tube...' - Frank Herbert, 1965.

Google Perfects 'Blade Runner-style' Photo Details
'Pull back... stop... enhance 57-19...' - Blade Runner, 1982.

CloudFisher - Moroccan Fog Farmers Harvest Moisture From The Air
'That moisture trickles down...', 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

Keith Laumer's Bolo Autonomous Tanks Right On Schedule
'I cannot lie idle under attack.'

When Computers Develop Their Own Language, Will They Talk To Us?
'The curious absent look of a robot talking on the TBR circuits - the Talk Between Robots radio...'

LipNet Reads Lips - Until Disconnected, That Is
'We'd have to cut his higher brain functions... I'm not sure what [HAL} would think about that.'

Eterni.me - To Skype With The Dead
'Nothing... left of Jeserac but a galaxy of electrons frozen in the heart of a crystal.'

Wearable MRI Is Former Occulus/Facebook Exec's New Project
'Your cephalochromoscope... that you always turn on and play when you get home...'

Ford Stratasys Infinte Build 3D Printer
'He proudly indicated his Buick... Almost as good as the original it was printed from...'

The Space Suit As Personal Spaceship
'Darn clever, these suits...'

Dune Fans! Your God Emperor Is Ready
'If one held a sandtrout in the hand, smoothing it over your skin, it formed a living glove.'

Robot Strolls Field, Examines EVERY Plant
'The great machines that did the work ... required but a few dozen men to cultivate an entire county.'

Sweden Outlaws Drones
'An eye that could not only see, but fly, roam, travel at speeds and in directions to suit its operator...'

Wear Your Self-Powered Generator
'It's basically a micro-sandwich...'

TITAN-III Spider Robot Is WAY Too Quick (Video)
'My little friends can find you wherever you go!'

Bill Gates Suggests Tax On Robots
'A worker replaced by a nubot that 'appears or pretends to be human' had to be compensated...'

Handle, New Wheeled Hopping Robot
'the hopper sprang thirty feet into the air...'

Matrix Sentinel Ancestor, The Pipe Inspector Robot From Krakow
Watch out, Keanu!

Auto-Focus Smart Glasses Have Liquid Lenses
'Hufhuf oil held in static tension by an enclosing force field within a viewing tube...'

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.