Not long after Zhou Ji finished the phone call, a young man with glasses who was a little thin but seemed to have a very sunny personality came to the activity room of the Xinghai Scientific Research Group.
"Hello."
"welcome."
Xia Xu and others said hello one after another.
Since Cao Yuan was able to come over, he had naturally agreed to join or had some intention to join their research group. Soon everyone enthusiastically invited him to sit down and planned to continue the discussion while the iron was hot.
As pure information majors, Tang Youxin, Song Yu, and Luo Lin could not help much at the moment, so they simply served tea and water and bought some fruit snacks for everyone.
On Xia Xu's side, in order to avoid interrupting their train of thought, they quickly continued their brainstorming after getting acquainted with each other.
Of course, Xia Xu also took a look at Cao Yuan's attributes before this, and the result also made his eyes light up.
Although it may not be as good as Victor's wall hanging, five-star stars are not so easy to find, especially for five-star physics, where one may not be born in thousands of years.
With a four-star physicist like Cao Yuan joining the team, their Xinghai research team will definitely be even more powerful in everything they do.
Especially in the design of passive exoskeletons, Cao Yuan, a physicist who also majors in materials science and is familiar with graphene, may be more useful than Zhou Ji and Walker.
"There is no problem in using graphene to make protective clothing, but I feel there is no need to give up the buffer layer. Instead, the entire passive exoskeleton structure can work on it..."
Under everyone's enthusiastic discussion, Cao Yuan also felt a sense of sympathy for each other, and soon gradually integrated into it, and after listening to everyone's thoughts, he brought a new suggestion, or in other words, good news.
"Professor Gao from Zhejiang University recently made a breakthrough in graphene research. They produced a graphene sponge, which can also be called a carbon sponge..."
Cao Yuan is indeed a professional in graphene research, and he opened his mouth to reveal a piece of unexplored news.
Zhejiang University has now developed a graphene sponge, and it is said to be a sponge, but it is actually an aerogel.
The interior of aerogel is mostly air, and its weight is almost negligible. It is also the lightest solid known in the world, and its density is lower than that of air.
But this graphene sponge is more than just light.
Graphene sponge has super elasticity and can return to its original shape after being compressed by 80%.
And the more it is compressed, the higher its density is, just like a sponge becomes hard after being pinched tightly. The stronger the impact force, the higher the strength and hardness of the graphene sponge will become, eventually reaching a level similar to that of a graphene sheet.
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Therefore, its compression and impact resistance is extremely exaggerated, and it can withstand more than 14,500 pounds of impact force per square inch.
This means that only a thin layer, mixed with materials such as carbon nanotubes as a skeleton, can be used to obtain an extremely light and thin body armor that can easily defend against large-caliber armor-piercing bullets.
No, it shouldn't just be called a body armor.
Because it can defend against both blunt and sharp weapons, plus a layer of graphene surface, it becomes a super protective suit, and has a series of countless performance advantages such as heat dissipation, sweat absorption, breathability and sound absorption.
"With this kind of graphene carbon sponge on the surface of graphene, we only need to implant a certain amount of carbon nanotubes as a skeleton. I think we no longer need to design any additional passive exoskeleton..."
After hearing the news given by Cao Yuan, Zhou Ji and Walker's eyes lit up and they became completely excited.
Is this graphene sponge just used to protect against bullets and reduce impact?
In their view, this was too much of a waste of natural resources.
Sponge, as the name suggests, is a sparse and porous structure that is compressed after absorbing impact, and then rebounds after the impact is buffered.
Graphene sponge is the best among them, and it can be restored to its original shape even if it is compressed by 80%.
An object can absorb impact force, compress itself and then rebound. To put it simply, this is called a spring. To put it more advanced, it is some kind of energy storage structure.
Mechanical energy, like other energies such as thermal energy and electricity, can be stored and transformed as long as there is a suitable method. For example, a winding watch stores the mechanical energy of twisting the spring and then releases it slowly.
To exaggerate further, any mechanical energy, including human power, is used to transport a large number of stones to high places. These stones essentially serve as 'batteries' that store mechanical energy.
When needed, the mechanical energy can be used by throwing stones down and driving rope pulleys, etc., and with the help of a rotor generator, the mechanical energy can be converted into electrical energy.
With the ready-made "spring" like graphene sponge, they no longer need to consider energy storage and conversion of mechanical energy. They only need to arrange it reasonably to use it as a ready-made energy storage component.
Just like muscle contraction and accumulation of force, accumulating one's own strength and then exploding it will naturally have the effect of increasing the strength of the limbs.
Through structural design, they may also be able to make the conversion and conduction of mechanical energy better.
Just like many martial arts and fighting skills say that power starts from the waist and power starts from the legs, they can truly conduct and concentrate the power of the legs, waist and abdomen to one point, thereby forming super explosive power.
And the stronger the impact the graphene sponge receives, the harder it becomes.
If the design is reasonable and a layer of 'skeleton' is woven out of graphene sponge, then the last link of the exoskeleton armor will be perfectly solved.
Under normal conditions, this layer of skeleton will be as soft as a sponge and will not affect activities at all. However, as long as it is subject to gravity and impact force, it will harden and form a real skeleton, which acts like a ridge to disperse weight and impact force.
To give a vivid example, if a huge heavy object falls, if you reach out to lift it normally, it will be smashed to the ground.
But if the arms, legs, and spine have such a layer of skeleton that hardens quickly, then the arms and spine will not bend due to the weight, and the impact force and gravity will be dispersed, and eventually transmitted all the way to the ground.
In this way, not only the defense capability is enhanced, but also the core function of the passive exoskeleton, the load-bearing capacity, is also solved.
Bulletproof, stab-proof, impact-resistant, enhanced limb strength and load-bearing capacity, more efficient transfer and utilization of physical energy to reduce loss, isn't this the ultimate pursuit of passive exoskeletons.
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The most outrageous thing is that it is as light as a piece of clothing and does not require any additional mechanical structures or accessories.
It can be said that if it is really made in this way, it will be the most perfect passive exoskeleton armor, which is far more practical than the powered exoskeletons that can be made at this stage.