What are the black technologies in the field of physics?

Here are three areas of physicsBlack technology

Black technology 1"For the last century, finite elements must have been a major black technology in mechanics, and now it has been extended to BVP solutions for physics other than mechanics. ”

BlackTechnology 2: "Bladeless wind hydropower. Traditional wind and hydropower generation is fluid-driven blade rotation, which needs to avoid the blades reaching resonance.

This bladeless power generation method uses resonance to achieve large solid deformations, typical of fluid-structure interaction problems. Draw the knife and cut off the water, wind power - vulgar words - the people know the column, the Spanish company proposes a new concept of wind power generation Bladeless paddles rely on eddy currents to generate electricity. ”

Black technology 3"Fracture mechanics in high-capacity lithium batteries. Let's briefly translate a summary.

The deterioration of the mechanical properties of high-capacity electrode materials and the resulting loss of capacity hinder their use in high-performance rechargeable batteries.

. Although a large number of studies have been conducted on the electro-chemical-mechanical coupling behavior of large-capacity electrode materials, their fracture properties and mechanisms are still largely unknown. We report here an electrochemistry of silicon lithirid.

Nanomechanical damage resistance studies. We do this by means of a real-time electron microscope.

The experiments found that the brittle fracture of pure silicon and the tensile deformation of complete silicon lithiride were found. Quantitative fracture toughness obtained by nanoindentation.

It is found that a rapid brittle-tough transition occurs when the atomic ratio of silicon lithiride is reached. Molecular dynamics simulations show that this mechanism is toughened by atomic bonds and lithium. Our results demonstrate the high vandal resistance of amorphous lithium-rich silicon alloys, which are of great significance in the development of long-life rechargeable batteries. ”

Black technology 4: Stretchable electronics, stretchable strain sensors, stretchable transparent electrodes, <>

In addition to the stretchability of the material itself, the macroscopic deformation of brittle materials can also be achieved through geometric design (the figure below shows the stretchable silicon material).

The figure below shows A can be a battery and B fractal.

The brittleness of the structure is stretchable and large deformation, the brittleness of the C spiral structure is stretchable and large deformation, and the brittleness of the D helix structure is <>

Black technology 5"Mechanics-based manufacturing in the traditional manufacturing field, mechanics is often an auxiliary industry, that is, there is a sad situation where you can do it without you... Although those who do mechanics think they are useful, but leaders and people in other industries may not necessarily recognize it...

Well, there is some research progress that makes some "<>" of materials through some mechanical phenomena

a, the fabrication of nanowires by cracking. b, fabrication of nanoscale channels through the collapse of elastomers. C, mentioned in the above black technology, stretchable 3D silicon structure. d, the fabrication of superhydrophobic materials through the folded hierarchical structure of elastomers. <>

The capillary force generated by the evaporation of the liquid creates some interesting structures. ps, the advantage of mechanics over some other disciplines is that the parameters can be accurately controlled through the governing equations, and the effect of computer simulation is very good, and there is no need for complex chemical synthesis, which is done in one step.

Excerpted from "People's Network".

A major breakthrough in science: a scientific research team led by four Chinese scientists finally found the positive and negative "angel particle" - Majorana fermions, thus ending the 80-year long pursuit of this mysterious particle by the international physics community.

Related ** was published in today's issue of the journal Science. The results were jointly completed by the research group of Kanglong Wang at the University of California, Los Angeles, the research group of Professor Shousheng Zhang of Stanford University, and the research group of Xufeng Kou of ShanghaiTech University<>

He Qinglin, Kou Xufeng, Zhang Shousheng, and Wang Kanglong are all Chinese scientists.

According to People's Daily Online on July 21, physics ushered in a major breakthrough: a scientific research team led by 4 Chinese scientists finally found the positive and negative homogeneous "angel particle" - Majorana fermions, thus ending the 80-year long pursuit of this mysterious particle by the international physics community.

Related ** was published in today's issue of the journal Science. The results were jointly completed by the research group of Kanglong Wang at the University of California, Los Angeles, the research group of Professor Shousheng Zhang of Stanford University, and the research group of Kou Xufeng of ShanghaiTech University.

According to People's Daily Online on July 21, physics ushered in a major breakthrough: a scientific research team led by 4 Chinese scientists finally found the positive and negative homogeneous "angel particle" - Majorana fermions, thus ending the 80-year long pursuit of this mysterious particle by the international physics community.

Related ** was published in today's issue of the journal Science. The results were jointly completed by the research group of Kanglong Wang at the University of California, Los Angeles, the research group of Professor Shousheng Zhang of Stanford University, and the research group of Kou Xufeng of ShanghaiTech University.

Summary. Hello, dear, here are some black technologies for you. Definition.

Black technology is a term that appeared in "Full Metal Mania", which originally meant knowledge that was not self-developed by human beings and overrode the existing technology of human beings, and by extension, hunting for strange things that could not be understood by the existing worldview of human beings.

Black technology refers to science and technology or products that are far beyond the reach of today's human technology or knowledge, lack scientific basis and violate natural principles.

Black technology has no scientific basis but is very powerful and has the name of science and technology, and it is used like magic, such as Gundam gn particles and interstellar ghost energy.

Normally, the technologies or products that cannot be achieved or impossible to produce by human beings are collectively referred to as "black technology", and their standards are not in line with real-world common sense and the current level of science and technology.

What is the knowledge of black technology?

Hello, welcome to use the know** one-on-one consulting service, I am the one who knows the Q&A answer "yoo cola cola wow" I will answer for you next, I am happy to serve you, I will take your questions seriously and carefully. It may take a few minutes to type and organize the paperwork, so please be patient!

Hello, dear, here are some black technologies for you. Definition of black technology is a term that appeared in "Full Metal Frenzy", which originally meant that knowledge that was not independently developed by humans and was above the existing technology of human beings, and by extension, hunting for strange things that could not be understood by the existing worldview of human beings. Black technology refers to science and technology or products that are far beyond the reach of today's human technology or knowledge, lack scientific basis and violate natural principles.

Black technology has no scientific basis but is very powerful and has the name of science and technology, and it is used like magic, such as Gundam gn particles and interstellar ghost energy. Normally, the technologies or products that cannot be achieved or impossible to produce by human beings are collectively referred to as "black technology", and their standards are not in line with real-world common sense and the current level of science and technology.

Read at least 1 book a day and punch in 887 days.

Title: "1 Minute Physics".

Category: Popular Science in Physics.

Share: This book is a collection of articles in the column called "Questions and Answers" made by the teachers of the Institute of Physics of the Chinese Academy of Sciences, with a total of 238 brain questions from netizens, interesting and knowledgeable.

In addition to the physics trivia, I also learned some of the scientific attitudes of these physicists from this book.

For example, Physicist believes that the most important principles of physics are these three points:

1) Physics is an empirical discipline based on experiments, not a "philosophy" that relies solely on utopian and speculative thinking.

2) Physics is not truth.

3) But physics is closer to the truth. Changyu.

The book mentions a quote from Albert Einstein: "Common sense is the prejudice that accumulates before the age of eighteen." ”

This sentence is so resonant, as if it has returned to the teachers' relay of "You will know when you go to high school", "You will know when you go to college", "You will know when you go to graduate school", "You will know after you work" series of prevarication statements, tsk, it turns out that it is not prevarication, it is really something that should be explored. Thinking about it carefully, we should really learn like a physicist, and **** Are the concepts we have now really correct? Is it scientific?

Is it worth continuing to hold?

When it rains, it rains in some areas, so why can't we usually see or touch the junction between rain and non-rain?

In fact, there is a clear distinction between places that rain and places that don't, and Physicists often see them in the open wilderness. It's just that there are a few reasons why it's not convenient for us to see this phenomenon.

First of all, the clouds vary from hundreds to thousands of meters above the ground, which is very high, and the raindrops will randomly disperse due to the disturbance of the wind during the fall, resulting in blurred boundaries. Secondly, the boundary area is relatively small compared to the overall area of the clouds, and it is not easy for observers to happen to be near the boundary. Finally, the clouds move under the influence of the wind, and the speed can easily reach tens of meters per second, and the boundary moves rapidly, even in a flash for the observer.

Why does snow feel quiet? (I always thought it was a delusion, but I didn't expect it to be real!) ）

Sound is a mechanical wave that is transmitted by the vibration of the air. This vibration of the air is most afraid of encountering fluffy and porous substances (such as sponges) that are prone to inelastic deformation, because after the sound reaches these small cavities, it will be reflected many times until the energy is exhausted, and only a small part can escape from the small cavities and continue to propagate. The popular foam acoustic panel resistant rock on the market uses a similar principle.

The snow is quieter because of this.

Black technology refers to science and technology that is beyond the reach of today's human technology or knowledge, lacks current scientific basis, and even violates known natural principles. Black technology is not based on scientific theories that have been realized, and it is in the name of science and technology, and it is used like magic, such as crossing wormholes, such as warp engines, etc.

The actual situation is that we often say that a certain product applies a certain black technology, and the concept of black technology in this reality is more like the application of "unexpected" technology rather than "impossible" technology. I think it makes more practical sense to explain black technology in this way, otherwise we will talk about science fiction **. So, let's move on to those areas that are "unexpected" and that are so amazing that they are considered to be black technology.

In fact, not too far ago, Apple's iPad appeared to give the world an accident realized by black technology, a touch-screen controlled computer! You know,You don't need a mouse but can click more quickly,What an amazing feature,This function is the first time it has appeared in a public product,Many people shouted surprise,I myself also think that alien products are mass-produced on Earth。 Recently, Einstein said that the quantum communication satellite that was launched a few days ago was a ghostly thing, which should only exist in legends, but it was really created, and it was simply a black technology.

Of course, because it appears in my country, the sense of black technology is particularly strong, and I even want to pinch myself to verify whether it is a dream.

The above examples are even individual cases, because the spotlight has hit, so into our field of vision, in fact, we are not in sight of the field, new changes are taking place every day, each new change is unprecedented, as long as it is unprecedented black technology, that is to say, there is black technology in every field.

In fact, whether technology is black or not, it is more a feeling caused by psychological factors, blowing the wind for a few years before the arrival of a black technology, and when it really arrives, do we not think it is so black?