Scientists at the University of Cambridge have developed a new type of soft material capable of withstanding monumental forces. Called “super jelly,” this new hydrogel uses a unique internal structure that is likened to molecular handcuffs, responding to compression by becoming a glass-like state and being hit by a car without being crushed. I can do it.
Hydrogels are of great interest to materials scientists. Due to its high water content, it is suitable for use on the human body, has elasticity and self-healing properties, and is self-healing. Robotics, Advanced contact lenses, Artificial tissue When Wound healing.. The authors of this new study sought to extend these functions by fine-tuning the underlying molecular structure.
“We use cross-linking agents that bond the two molecules through chemical bonds to create a material with the mechanical properties we want,” said Dr. Zehuan Huang, lead author of the study. “We use reversible crosslinkers to create soft, stretchy hydrogels, but it is difficult to create hard, compressible hydrogels, and designing materials with these properties. Is completely counterintuitive. “
To achieve this, scientists turned to a barrel-shaped molecule called Kukurubituriru. Kukurubituriru “handcuffs” pairs of other molecules together within its cavity. Next, we used a molecule specially designed to stay in this cavity longer than usual. This allows the network to be tightly linked and change from a rubbery state to a carbide, shatterproof glass-like state.
According to the team, this allows the “super jelly” to withstand the same force as an elephant standing on it without being crushed. With the elephant out of hand, the team instead tested the material by running it in the car and showed how it could return to its original shape.
“If the water content is 80%, I think it will burst like a water balloon, but it’s not. It’s still intact and can withstand huge compressive forces,” said Professor Oren A. Scherman, who led the study. I am saying. “The properties of hydrogels seem to be in opposition to each other.”
Scientists have also used new materials to create pressure sensors for human movements such as standing, walking, and jumping. They are currently developing materials for the purpose of cartilage replacement and potentially adaptation to biomedical applications such as soft robotics.
“As far as we know, this is the first time a glass-like hydrogel has been made. Not only are we writing something new in our textbooks, it’s really exciting. In the field of high performance soft materials. A new chapter. “
The study was published in the journal Nature Materials, You can see the super jelly flip over in the video below.
“Super Jelly” can survive by being hit by a car
sauce: University of Cambridge
https://newatlas.com/materials/super-jelly-hydrogel-shatterproof-compressed/ “Super Jelly” becomes like shatterproof glass when hit by a car