Shape-Memory Polymers Temperature Morphing

Shape-memory polymers created by researchers from MIT and the Institute of Polymer Research in Germany can morph into three different structures - and then revert back to its original shape - in response to specific changes in temperature.

See the shape-shifting polymers do their thing in the video below; it shows a fastener which unfolds itself and then extends two arms to secure the structure to a plastic container. This item could be used on assembly lines to fasten small parts in difficult-to-reach places.


(Shape-shifting polymer has three temperature-controlled shapes)

Another unique use for shape-memory polymers is proposed in biodegradable sutures that shape themselves.


(Shape-memory polymer biodegradable sutures)

To test this concept, researchers Dr Andreas Lendlein and Dr Robert Langer made sutures by heating fibers of their ‘shape shifting’ material to 50°C. They were then stretched to three times their length and cooled to room temperature. These extended fibers were then used to loosely stitch a wound on a rat. When the suture was heated to 41°C (just above body temperature), the thread tightened and closed the wound, applying just the right amount of pressure (0.1 N). Later, after the wound is healed, the material is designed to dissolve and is harmlessly absorbed by the body.

Like those shape-memory toys?

Update: 21-Oct-2016: The first time I read about the idea of a shape memory alloy was in Samuel R. Delany's 1966 novel Babel-17; see the entry for tensile memory polarized matter. End update.

More on shape-memory polymers and shape-memory biodegradable sutures.

Scroll down for more stories in the same category. (Story submitted 11/25/2006)

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 - (" Material ")

3D Printing Of Metallic Glass
Great Scott!

Draw Circuits With Conductive Ink
'It's rewiring things... squeezing silver toothpaste in a ribbon along the printed circuitry.'

How To Encode The 'Memory' Of Materials
'Just jar it, and it falls into that structure like a rubber figure returning to shape.' - Samuel R. Delany, 1966.

Surface Film Repels All Bacteria
'Most gentlemen's and ladies' gloves nowadays were constructed of infinitesimal fabricules that knew how to eject dirt...'- Neal Stephenson, 1995

 

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

Liftware Level, Google's Smart Spoon
'The result was indeed marvelous... I did not stagger and I did not reel.'

Cute Teddy Bear Robot Favorite Of Hospitalized Children
'...thought had been given to its programming.'

Google Now Expects Chips To Design Themselves
'What lay down there? Energy, tubes and pipes, wiring, transformers, self-contained machinery...'

PRAM Solar Powered Satellite Hardware Tested In Orbit
'Our beams feed these worlds energy drawn from... the Sun'

3D Printed Glass Uses Stereolithography Techniques
'All that with glass...'

Science Fiction Helps Young Readers Build Resiliency
'Reading science fiction and fantasy can help readers make sense of the world.'

I Want My 1928 Telestereo Hologram Now
'Instantly there appeared standing upon the disk, the image of a man...'

Memes Now Come From Neural Nets
'Your order said for him to be able to be able to work out twists on the gags in the file...'

Robot Dog Learns To Be Doggy From Real Dogs
'So we took pictures of Guzub making a Three Planets, and I could construct this one to do it exactly right down to the thousandth of a second.'

Unwanted Cruise Ships Huddle Together Out At Sea
'On the screen they passed in an endless, boundaryless flood of green specks...'

Sono Sion Electric Car Charges As You Drive
'It drew its power from six square yards of sunpower screens on its low curved roof.'

News Mood Filter Web Extension
'He adjusted the n, the r and b knobs, and hopefully anticipated a turn for the better...'

Fetal Lamb Rests In Artificial Womb
'... stewing warm on their cushion of peritoneum and gorged with blood-surrogate and hormones, the foetuses grew and grew...'

MIT Wants To Catch Interstellar Visitors
'INVESTIGATE MYSTERIOUS OBJECT ENTERING NEW CALEDONIA SYSTEM FROM NORMAL SPACE'

AutoX Sets Up Asia's Largest Robotaxi Center
'The robot cab seemed to know where it was going and, no doubt, the master machine from which it received its signals knew.'

E - Ink's Automatic Self Styling Color-Changing Dress
'The racks of gowns itched and quivered, their colors running into blurred pools.'

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.