Rebirth 2002: Nano Life

When Wen Meicen saw the prosthetic limb, she was a little silly, it was different from what she imagined.

Wen Meicen had tried on a prosthesis before, a prosthesis for his left shoulder and arm. The shoulder part is a breastplate, fastened to the chest with straps; the arms are hinged at the shoulders and elbows, and terminated by a pair of metal pliers. To extend the arm, you have to turn your head to the left, press down on a lever with your chin, and throw the handle out with a little throwing motion. It really is as awkward as it gets. And dead. After 20 minutes, my neck was sore from the odd posture and strenuous bar movement.

In Wen Meicen's opinion, this kind of prosthesis is actually no different from not wearing it. It is too inconvenient and too bulky.

The prosthesis Chen Yizhe took out at the moment she saw was actually more like a black long-sleeved tight jacket with an exposed waist. Under the sleeves were complete models of palms and fingers, and the color was also black.

"Is this a prosthesis?" Wen Meicen asked again uncertainly.

"You'll know if the prosthesis is when you put it on." Chen Yizhe said with a smile, if Wen Meicen had watched Marvel anime, she would know that this prosthesis is actually more like the upper body of Iron Man's armor, and it's slender Female version of Iron Man armor.

"I just put it on?" Wen Meicen asked.

"Of course not. If you put it on directly, you are really wearing clothes. I have to implant nanochips on both sides of your shoulders and arms." Chen Yizhe replied.

"Nano chip?" Wen Meicen felt that she seemed a little stupid, because she had no idea what Chen Yizhe was talking about.

"Anyway, you're right to listen to me, but I have to take off your clothes first." Chen Yizhe said, in fact, he can also implant nanochips through his clothes, but it is only because he has to take off his clothes in the end before he can put on the prosthesis , so it's better to get off the show early and do a full set.

"Ah?" Wen Meicen suddenly remembered the scene of being undressed last time.

"Do I need to close my eyes this time?" Chen Yizhe asked.

Wen Meicen blushed, shook her head, and said, "No need."

"Really not?"

"Well, anyway, it feels like your eyes are closed or not." Wen Meicen lowered her head and bit her lip.

"That's fine!"

The current temperature is about 14 degrees, which is still a bit cold in the south. Especially inside the house, it always feels colder than outside. Chen Yizhe had to close the door of Xiayi's room and let Wen Meicen stand.

Wen Meicen usually only wears one piece of clothing for the convenience of wearing. Chen Yizhe quickly took off her cotton-padded coat from bottom to head. Chen Yizhe took a quick glance and was wearing a pink A cup.

Wen Meicen took off her shirt, her body trembled, she didn't know if it was because of her coldness or shyness, her face was as red as the sunset on the horizon. Afraid that she would be cold, Chen Yizhe quickened his movements. Wen Meicen only saw that he had pasted two square pieces with a side length of less than 1cm and a bit of transparency on the place where his two shoulders and arms were connected. As soon as these two pieces were pasted, they submerged directly into Wen Meicen's skin, causing Wen Meicen to Eyes widened in surprise.

"What is this?" Wen Meicen asked with a wink.

"Just think of it as a computer for controlling prosthetic limbs." Chen Yizhe thought for a while and explained.

These two pieces are actually made by Chen Yizhe who did many experiments by himself. Chen Yizhe named it a neural electrode. Its essence is a soc made of graphene instead of a transistor. The energy only needs the thermal energy generated by the organism itself. , it is a transfer station for the brain and prosthetic signals to receive and transmit each other.

There is a difference between a natural disability and an acquired disability. The brain with a natural disability basically does not reserve a corresponding control area for the disabled part, so it is impossible to imagine the feeling of moving it, let alone control. In people with acquired disabilities, the areas of the brain and nerves that once controlled them continue to survive even if the muscles and bones are damaged or lost. These nerves, like a data cable, can transmit "data" if they are replaced with new equipment.

Wen Meicen was not born with disabilities, but she was only touched by high-voltage electricity when she was a child, which made her arms amputated. That is to say, her cerebral cortex still maintained the ability to send and receive signals to her arms. When she wanted to make some arm movements , the nerve signals will still be transmitted from the brain to the brain, because the brain does not know that the arm part is no longer there. And this neural chip will receive the signals from the brain to the upper limbs, and then convert the neural signals into electrical signals through decoding and transmit them to the prosthetic limb. The new prosthetic limb will receive the electrical signals and will know like a real limb. How to do.

In this world, it is estimated that only Chen Yizhe can clearly feel the specific position of the cerebral cortex controlling the upper limbs, the route of the signals sent by the brain to the upper limbs, and what actions are these signals finally going to do? With these specific things, the prosthetic limbs move accurately To be sure that it is no different from normal people.

If neural electrodes are black technology, the materials used in prosthetics are even more extraordinary.

The skeleton of the prosthesis Chen Yizhe uses a super-performance carbon material. Its atomic arrangement integrates diamond and graphene to form an unusual ambidextrous bond, which is characterized by ultra-light, super-strength, high flexibility and electrical conductivity. Chen Yizhe named this material black gold. Its compressive strength is more than twice that of traditional materials, and it has the ability to self-repair local deformation.

Muscles, on the other hand, are composed of "bundles" of carbon nanotubes that can rapidly expand and contract horizontally when stimulated by an electric current. In the vertical direction, it is extremely tough. The pulling force that can be generated per unit area is 30 times that of human muscles, and the expansion and contraction speed is much faster. Human muscle fibers can contract 10% per second, while this artificial muscle can contract 40,000%. It is even light enough to float in the air when stretched a lot.

The limbs composed of such "muscles" and "bones" are indeed powerful, but the arms are not only able to exert force, but also to be able to sense external forces, that is, to have a tactile system. Think about it, if a person with a prosthetic limb wants to pinch grapes, the prosthetic limb may be able to crush it too lightly or too hard because it cannot control the force of these movements.

In response to this situation, Chen Yizhe used a single layer of graphene as the skin of the prosthetic limb, and quickly sensed small changes through bionic tactile sensors. It can even be bent and deformed arbitrarily like human skin, and its sensitivity and response speed surpassed that of human beings. skin. Under the transparent graphene are black solar cells and a backup supercapacitor. Through the solar cells or capacitors hidden under the skin, the sensors can be driven, the artificial limbs can generate tactile sensation, and then the tactile signals are fed back to the nerve electrodes. .

The whole set of prosthetic limbs is the result of Chen Yizhe's brain overclocking countless times, using a lot of knowledge from later generations. For him, the production of carbon structures couldn't be easier. Graphene and carbon nanotubes can be made from graphite. Chen Yizhe, the diamond part of the black gold, extracted the components of synthetic diamond, which is why his entire prosthesis is made of carbon structures. The reason is that on the one hand it is convenient, and on the other hand, carbon nanomaterials are simply too good.

When this set of prosthetics was ready, Chen Yizhe kept thinking about whether to give it to Wen Meicen. After all, the technology involved was beyond this era. Thinking about it later, Wen Meicen will definitely wear this set of things all the time, and not many people should notice the prosthetic limbs, giving himself some excuses, Chen Yizhe finally decided to give it to Wen Meicen.

"Mei Cen, the wearing of this prosthesis is actually very simple. Look, there is a red dot on its right shoulder. Now imagine that your right arm exists, and then use your arm to press the dot." Chen Yizhe Holding the collar of the "clothes", the back of the "clothes" faces Wen Meicen. UU Reading www.uukanshu.com

Wen Meicen closed her eyes. It had been more than ten years since she lost her arms. For her, she no longer knew the feeling of controlling her arms. After thinking hard for a long time, she opened her eyes and saw no change. She said disappointedly, "It seems There was no movement."

"Who said there was no movement? Look, isn't your right finger moving?"

Only then did Wen Meicen realize that the five fingers of the right hand of the prosthetic arm held by Chen Yizhe were shaking slightly.

"Ah? This is under my control?" Wen Meicen asked excitedly, her fingers staring at the prosthetic limb didn't move, and her heart was thumping and beating quickly.

"Well, it may be too long. You have to practice slowly. Let me put it on for you first." Chen Yizhe clicked the red dot with his left hand, and then the back of the "clothes" opened from the middle to the left and right.

"You put your upper body in." Chen Yizhe continued to say to Wen Meicen.

Wen Meicen nervously put her upper body in, and when her body was completely covered, Chen Yizhe pressed the red dot again, and the back of the "clothes" closed.

The part of this "clothing" that is not the body is made of black gold and carbon nanotubes, so Wen Meicen feels very breathable when wearing it, and the part that is close to the skin is very soft and comfortable. Most importantly, Wen Meicen can't feel it. The bulky feeling of the prosthetic legs I used to wear.

"Does it fit?" Chen Yizhe asked.

"Well." Wen Meicen nodded involuntarily, with a look of joy on her face.

"That's fine, then you get to know it slowly first, remember, you have to think of it as your real arm, and then imagine how you were when you were a child. Slowly, you will naturally make the same movements as ordinary people." Chen Yizhe paused. Down, touched his chin and continued, "You have to change your name before that, just call it Steel Girl!"

"?" Wen Meicen looked puzzled.