How To Encode The 'Memory' Of Materials
Researchers at Penn and the University of Chicago are able to use the "memory" of how materials were processed, stored, and manipulated to encode specific properties that allow it to perform new functions.
In this study, the researchers wanted to see if they could use a disordered material's "memory" of the prior stresses it had encountered to transform the material into something new. First, they ran computer simulations of normal materials under pressure and selectively altered atomic bonds to see which changes could make the material auxetic. They discovered that, by cutting the bonds along the areas with the most external stress, they could digitally create an auxetic material.
Using this insight, the team then took a Styrofoam-like material and added "memory" by allowing the material to age under specified stresses. To make the material auxetic they applied a constant pressure to the material and let it age naturally. "With the whole thing under pressure, it adjusted itself. It turned itself from a normal material into a mechanical metamaterial," says Liu.
This incredibly simple and effective process is a step closer towards a materials science "holy grail" of being able to create materials with specific atomic-level structures without the need for high-resolution equipment or atomic-level modifications. The approach described in this paper instead only requires a bit of patience while the system gains "memory" and then ages naturally.
I read the ultimate expression of this idea in Samuel R. Delany's 1966 masterpiece Babel-17:
"Annealed in any shape for a time, and codified, the structure of that shape is retained down to the molecules. At any angle to the direction that the matter has been polarized in, each molecule has completely free movement. Just jar it, and it falls into that structure like a rubber figure returning to shape."
(Read more about Tensile Memory Polarized Matter)
Scroll down for more stories in the same category. (Story submitted 12/11/2019)
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 -
3D Printed Damascus Steel Now Possible
'... lined with durite, that strange close-packed laboratory product.' - Robert Heinlein, 1939.
3D Printing Of Metallic Glass
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.
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.
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...'
Bigrating Laser Beam-Riding Light Sail Is Self-Correcting
'That sail will be twenty thousand miles at the wide part.'
ISS Astronauts Test Estee Lauder 'Advanced Night Repair' Skin Serum
'Out in the New Moon, just ask for what you want...'
LG Wing Twisting Smartphone Might Be Fun
'A polycarbon screen unfurled...'
Mushroom Coffin Returns You To Nature, Naturally
'She touched the leaf. She was wanted.'
More SF in the News Stories
More Beyond Technovelgy science news stories