Huawei knelt down too. The centuries-old problem of graphene was solved by this Chinese student.

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Huawei knelt down too. The centuries-old problem of graphene was solved by this Chinese student.

2019-04-25 21:31:01 665 ℃

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Since the smartphone entered the era of big screen, the short board of battery durability has become more and more obvious.

Looking at those mobile phones that have been forced to plug huge batteries into bricks, Xueba Jun is more looking forward to when mobile phone batteries will usher in new technological breakthroughs.

Among them, this material called graphene is well known, and it is said that the batteries made with it can "charge for ten minutes, standby for a whole day".

Although Xueba Jun did not know how powerful the batteries made of graphene were...

on a treasure, the charging treasure that claimed to use graphene batteries has been running all over the street.

In theory, graphene batteries can achieve a thickness of only 4 mm to 20,000 mA, but these of a treasure......... How does Xuebaojun think they are fake? To have graphene batteries, mobile phone manufacturers have long made "epoch-making products" for Lao Luo.

Of course, graphene technology has not been applied to mobile phones. Like Huawei, graphene technology is used in heat dissipation, and heat dissipation is very fast. If you want to use graphene superconducting in batteries, you don't need to think about it. If you don't learn to walk, you want to learn to run. First, you can solve the centuries-old problem of graphene superconducting.

PS: Physical knowledge popularization time, graphene has excellent conductivity, but in the past it was difficult to achieve zero resistance, graphene superconductivity solved this problem.

Besides, this 22-year-old Chinese student took the lead in solving the century-old problem of graphene superconductivity.

The world-renowned Nature magazine not only published two academic papers in succession, but also called him "the controller of graphene". More unexpectedly, Nature later ranked him as the top ten scientific figures in 2018. His name is Cao Yuan.

a "twist" idea, twisted the graphite sparseness of zero resistance

things also start from the young man's way to study.

When Cao Yuan entered MIT for his Ph.D., he joined the Pablo Jarillo-Herrero team of the "Graphene Daniel Group" by coincidence to learn the courses he most wanted to learn.

In fact, graphene technology has been very hot in recent years, but there has been no major breakthrough. The young man Cao Yuan's newborn calf was not afraid of tigers, so he decided to do an interesting experiment.

In an experiment to study stacked double-layer graphene, I wondered if he was inspired to eat Olio, and wanted to see what would happen by rotating one layer of double-layer graphene at a very small angle relative to the other.

creates various angles through micro-twisting. He finds that conductive graphene becomes an insulator at a specific angle, which has a huge impact on the field of graphene.

but the latter is the focus, because Cao Yuan also found that twisted double-layer graphene can become a superconductor by adjusting the electric field slightly. Graphene superconductivity was still blank in international scientific research at that time.

Maybe someone asked the overlord: What is superconductivity? Superconductivity is zero resistance. For example,

, the charging treasure we usually use has resistance. When the mobile phone is charged, it will get hot and the conversion rate is low (usually 70-90%).

If Charging Po uses superconducting graphene, it will be zero resistance, the conversion rate is 100%. When the mobile phone charges for 10 minutes, standby for a whole day is not a problem.

Finally Cao Yuan used his own experimental techniques many times to determine the specific angle of twisting change of double-layer graphene, which is known as the "magic angle" of graphene.

Many research teams have confirmed the phenomenon of "magic horn" through experiments, and even the industry generally believes that Caoyuan's graphene "magic horn" will open a new field of graphene.

Every year, the cover of ten scientific figures in Nature is a big number of "10". This year's "10" was processed into a regular hexagon, pointing out Cao Yuan's graphene superconducting "magic angle"

In order to let you know more about the principle of "magic angle", Cao Yuan participated in APS March Meeting.

Everyone is very interested in graphene superconducting magic horn, and many people are crowded upstairs to listen to his speech.

PS:APS is an annual conference sponsored by the American Physics Society and one of the most important international academic conferences in the whole field of physics.

the eyelids of others, the love of learning in the eyes of vice-principals

In fact, Cao Yuan can find the magic angle of graphene, which is inseparable from the education he received at home from childhood.

all said that active is the child's nature, and Cao Yuan was not only active, but also curious.

He often talks back crazily because of a problem and the teacher. In order to understand some physical structures, he dismantles the desks, chairs, blackboards, projectors and other "poisonous hands" of the classroom and installs them again. On one occasion, Cao Yuan did not have silver nitrate in his experiment, but stole the silver bracelet from his home and dissolved it directly. His various actions were regarded as "the devil of the world" in everyone's eyes.

But I have to say that Cao Yuan's luck is so good that even the academic tyrant feels sour. When he was in junior high school,

he was introduced to the junior high school of China University of Science and Technology by the vice-principal who had taught in the junior high school for 20 years. From then on, he began his life.

When we were still reciting the periodic table of elements, Cao Yuan had completed all the courses from elementary school to high school. At the age of 14, he took the college entrance examination in advance, and was admitted to Yan Jici Physics Talented Class of Junior College of China University of Science and Technology with 669 marks. During the period of

in the junior classes of CUHK, Cao Yuan's achievements were so outstanding that he soon became one of the key targets for teachers'attention. At that time, there was a professor named Ding Zejun in the Junior Class of CUST. He was so strict with his students that countless talented teenagers were cowardly. He was the "Devil Instructor" in the school.

Professor Ding Zejun once arranged a computer Physics related learning research project for Cao Yuan, which was difficult to complete by himself. However, Cao Yuan happened to be very interested in this aspect, insisting on his own information to solve the problem, only a winter vacation was completed. Later, Cao Yuan also went to the University of Michigan to exchange studies, to carry out scientific research practice at Oxford University, and finally graduated with the highest honor of the University of Science and Technology "Guo Moruo Scholarship".

In your opinion, these deeds of Cao Yuan before he graduated from university are just typical hanging-up life. Cao, who was interested in precision machinery, electronic circuits and so on, said that he just skipped some boring parts of high school and wanted to step into the field of science and explore learning faster.

Caoyuan's experimental tutor Jarillo-Herrero likes this very much, and always keeps curiosity to drive learning, even in the face of setbacks, he will refresh himself and go on!

Once Cao Yuan found a set of exciting data in his laboratory. He thought it might be a major discovery and was so excited that he spent six months painstakingly interpreting it. The result of

was only the "Oolong" caused by the coincidence of the experimental device, but Cao Yuan was not discouraged, so he turned his head and continued to study it.

(Map Source MIT News)

Many people say that Cao Yuan, as a Chinese, has made great achievements in the United States and made our scientific research talents flow abroad.

In the view of Xueba Jun, talent is indeed the first element of innovation, but no matter where Cao Yuan found any results, it can not change the fact that he is a Chinese. After all, science has no borders, but scientists have motherland.

As for the research of graphene, the scientific tyrant found that the flagship plan of graphene had been launched in Europe as early as 2016, but the physical content of scientific research innovation was becoming less and less, and was even called a hoax by many people, which made the research team on graphene more and more depressed.

Now Cao Yuan, a post-96 doctoral student in China, has pointed out the direction of superconductors in the field of graphene, making graphene technology a promising future once again. After all, you may not think that the most famous graphene product before was the graphene sleeve.