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Thinnest plates that can be bent by hand developed, may become newest addition to technology - mylar film sheets

by:Cailong     2019-07-24
Thinnest plates that can be bent by hand developed, may become newest addition to technology  -  mylar film sheets
Like plastic wrap, the relatively thin materials immediately curl on themselves, and if they are not stretched on the frame or supported by another material, they are stuck in a deformed shape.
Researchers, including one in India.
Origin, which has developed the thinnest board ever, can be picked up by hand and bounced back to its original shape even after bending and twisting.
The boards are thousands of times thinner than a piece of paper, and hundreds of times thinner than household plastic wrap or aluminum foil, the researchers said.
Like plastic wrap, the relatively thin materials immediately curl on themselves, and if they are not stretched on the frame or supported by another material, they are stuck in a deformed shape.
Being able to maintain a figure without additional support will allow this material and other materials designed according to its principles to be used in aviation and other low-weight structural applications.
"Nano-scale materials are usually much stronger than you think, but they are difficult to use on macro scale," said Igor Bargatin, a professor at the University of Pennsylvania School of Engineering.
"We have basically created a separate plate that has Nano-thickness but is large enough to be handled by hand.
This has not been done before, "Bargatin said.
Other atomic films, such as graphene films, usually need to be stretched like a canvas in the frame, or even mounted on the back to prevent them from curling or forming themselves.
"The problem is that the frame is heavy and cannot use the inherent weight of these super weights
"Film," Bargatin said.
"Our idea is to use ripples instead of frames.
This means that the structure we make is no longer completely flat, but has three planes.
It looks like the size shape of the honeycomb, but they are flat, continuous, completely independent, "he said.
"It's like an egg box, but on a nano scale," said Prashant Purohit, an associate professor at the University.
The thickness of the plates of the researchers is between 25 and 100 nanometers, made of alumina, which deposits an atomic layer at a time to achieve precise control of the thickness and unique honeycomb shape.
After completion, the ripple of the platform provides enhanced stiffness.
The same film is easily bent or recessed when held from one end, while the honeycomb panel remains rigid.
This prevents the common shortcomings of the United Nations.
Film with pattern, they curl up on it themselves.
These plates can be used to make the wings of insects.
Inspired flying robots, or in other applications
Low thickness and mechanical strength are critical.
The thinnest man
"As far as I know, the manufacturing of wing materials is made by depositing a layer of Mela film on the frame with a thickness of about half Micron," Bargatin said . ".
"Our plate can be ten times thinner or more than it does and doesn't need a frame at all.
So they weigh only a tenth of a gram per square meter . "
The study was published in the journal Nature Communications.
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