Self-Adapting Composite Heals Itself
A self-adaptive composite material (SAC) developed at Rice University has both self-healing and reversible self-stiffening properties.
(Postdoc Pei Dong holds Self-Adapting Composite )
The material, called SAC (for self-adaptive composite), consists of sticky, micron-scale rubber balls that form a solid matrix. The researchers made SAC by mixing two polymers and a solvent that evaporates when heated, leaving a porous mass of gooey spheres. When cracked, the matrix quickly heals, over and over. And like a sponge, it returns to its original form after compression.
SAC may be a useful biocompatible material for tissue engineering or a lightweight, defect-tolerant structural component.
In SAC, tiny spheres of polyvinylidene fluoride (PVDF) encapsulate much of the liquid. The viscous polydimethylsiloxane (PDMS) further coats the entire surface. The spheres are extremely resilient, Lou said, as their thin shells deform easily. Their liquid contents enhance their viscoelasticity, a measure of their ability to absorb the strain and return to their original state, while the coatings keep the spheres together. The spheres also have the freedom to slide past each other when compressed, but remain attached.
Everybody knows that the idea of self-healing materials dates from at least 1951 - in this story: Asteroid of Fear, by sf great Raymond Z. Gallun. Consider this unique plastic that can repair itself:
But the wide roof was all the way up, now—intact. It made a great, squarish bubble, the skin of which [a 'transparent, wire-strengthened plastic '] was specially treated to stop the hard and dangerous part of the ultra-violet rays of the sun, and also the lethal portion of the cosmic rays. It even had an inter-skin layer of gum that could seal the punctures that grain-of-sand-sized meteors might make.
(Read more about self-healing plastic)
Fans of the great J.G. Ballard know that he described a bendable, self-healing material in his 1962 short story The Thousand Dreams of Stellavista. Ballard wrote about plastex, a unique building material.
Scroll down for more stories in the same category. (Story submitted 1/26/2016)
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 -
Reconfigured Graphene 10X Strong, 5 Percent Dense, As Steel
'...It was made of Alohydrolium, which is the lightest of all metals.' - Hugo Gernsback, 1911.
MIT's aeroMorph Technology
'... It falls into that structure like a rubber figure returning to shape.' - Samuel R. Delany, 1966.
Russia's Protective Ferrite Fabric
'His suit-shield sucked in the energy and discharged it...'- Philip K. Dick, 1954.
Carbyne, The Ultimate Form Of Carbon
'A continuous pseudo-one dimensional diamond crystal...'- Arthur C. Clarke, 1978.
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.
3D Skin Printer Helps Burn Victims
'Over her lacerated right shoulder he sprayed art-derm...'
Tesla Autopilot's 40 Percent Crash Reduction
''I hope all those other cars are on automatic,' he said anxiously.'
Pent-Up NASA Scientists Simulate Life On Mars
'That gives it complete isolation.'
China Now Has Robot Journalists
'A vast complex electronic organism buried deep in the ground, responsible to no one...'
Relationship-Practicing Robot From Turing Robot
'Streamlined, smooth-working, absolutely noiseless, breath-takingly realistic.'
Cormorant Flying Car
'The cab came floating down out of the sky...'
ElliQ Robot To Help Israel's Grandmas And Grandpas
'The robant and the tiny old woman entered the control room slowly...'
EU Debates Kill Switches For Robots
'I have a mechanism which our autofac on Mars builds as an... emergency safety...'
Scotland Set To Implement Basic Income
'Earned by just being born.'
Sales Robots More Persistent Than Humans
'Robot-salesmen were everywhere, gesturing,,, shrilling...'
AI Identifies Suicidal Behavior With 93 Percent Accuracy
'...He padded into the living room, and seated himself by the suitcase; he opened it, clicked switches, and turned on Dr. Smile.'
Razer Project Valerie Laptop Unfurls
'A paper thin polycarbon screen unfurled silently...'
Can Virtual Reality help People Cope With Pain?
Research is promising.
Dust Movement On The Moon, Saturn's Rings Solved
'...The dust normally on the surface picks up and keeps a charge.'
Largest Micro-Drone Swarm Release Successful
'... Programmed to hang in space in a hexagonal grid pattern.'
Robot Motion Planning 10K Times Faster
'The robot crab... fired a burst of light, then froze...'
More SF in the News Stories
More Beyond Technovelgy science news stories