Clothes are composed of countless small chips. Each chip has its own processor and can call up information from everyone's eyeballs. It can image, emit light, heat dissipation, cooling, ventilation, etc. When a person wearing an invisibility cloak appears, each chip in the suit will image the image originally seen by the observer (the object behind) at your position according to the observer's visual information (the distance factor is also calculated); some chips simulate It emits light to remove (or offset) the shadow effect produced by the wearer; the influence of the body temperature of the air around the wearer is also offset by the cooling function of the chip; it is breathable and heat-dissipating, so that the invisibility cloak can cover the entire human body (of course other Objects covered with clothes made of chips can also achieve the effect of invisibility)...
Factors that are not easy to realize: the function of small chips makes the production process not simple, and the information base is not developed enough to be able to integrate everyone every day. Every moment of visual information is taken into account.
Stealth becomes possible
Using optical principles, scientists from the United States and the United Kingdom successfully used it to "invisible" a copper cylinder. This significant discovery has been published today in the journal Science.
The main material of this "invisibility cloak" is a mixture of metal and circuit board materials, such as ceramics or fiber optic composites. This material absorbs specific light, and the human eye cannot detect relatively weak light, as if the object does not exist.
It's like a mirage, in which the heat causes light changes that obscure the road extending behind the image that appears in the sky. David Scheiger, the designer of the invisibility cloak, said: "We have created an artificial mirage. It can hide some objects so that observers cannot detect its existence from all directions."
This An "invisibility cloak" can block microwaves from detecting objects. Like light and radar waves, microwaves usually reflect back when they encounter an object, so the instrument picks up the object and creates a detectable shadow.
The special materials used in the invisibility cloak can allow radar waves, light or other waves to bypass objects without bouncing back, thus achieving an invisible effect. It's like water in a river that can flow around a smooth rock without bouncing back. The next step is to destroy the "Shadow". However, this is only the first step for scientists to "steal the sky and change the sun". In the future, scientists will also transform and develop it to create invisibility cloaks that can make people and other objects "disappear". The designer said: "This invisibility cloak is only two-dimensional and casts a small shadow. Our next step is to make a three-dimensional invisibility cloak and eliminate all shadows."
People can see Objects because objects disperse the light that strikes their surface and reflect it back into the human eye. This invisibility cloak can not only reduce the reflection of light, but also reduce the shadow of objects. However, neither is completely hidden yet.
Under ideal circumstances, these two can "disappear" completely, and people cannot detect the existence of the "invisibility cloak" and the objects it hides.
The designer said: "Currently, we are just making the shadow of the object and the light it reflects less visible to the human eye. This means that its back is still visible, but it is darkened. In the future, we will also improve its structure to make it a complete invisibility cloak.” The designer also added that one can even imagine that this material can hide sound and not produce vibration. Researchers from the Optical Physics Laboratory of the Institute of Physics of the Chinese Academy of Sciences told this reporter that based on previous research and applications of stealth materials in the physics community, it is still possible to develop an "invisibility cloak" that can hide objects.
"Stealth" in photophysics refers to coating the surface of an object with a layer of specific material, which absorbs its corresponding specific wavelength, thereby achieving an undetectable effect. Previously, this optical principle has been widely used in the military.
For example, if aircraft or submarines are coated with materials that can block infrared rays, it will be difficult for radar to detect their presence.
However, this kind of practical application of making visible light "invisible" has been rare before. Since infrared rays have better confidentiality effects, a relatively wide range of stealth technologies, mostly infrared rays, are used.
Since visible light contains light of various wavelengths, it is not easy to find materials that can absorb light of various wavelengths. Therefore, it will take some time for scientists to develop a magical cloak that makes humans invisible. In 2004, a professor from the University of Tokyo in Japan launched a large coat that could make people "unrecognizable" simply by wearing it.
In fact, this invention called "Invisibility Cloak" is not true invisibility. It just uses "visual camouflage" to achieve the purpose of being indistinguishable.
It is made of retroreflective material. The specific method is to coat the entire clothing with a layer of retroreflective material, and the clothing is also equipped with a camera.
The principle is to capture the scene behind the clothes with a camera, then convert the image to a projector in front of the clothes, and then project the image onto the clothes made of special materials.
This set of technology has attracted great attention from military experts, who are interested in whether they can develop a technology that can help troops become invisible. Professor Gadomsky of Ulyanovsk State University in Russia said that he has invented a special "invisibility cloak" and applied for a patent.
Professor Gadomski discovered that an object can become invisible as long as it is covered with a "special coat" made of gold colloid particles.
Researchers believe that large objects such as airplanes and spacecraft will be able to "disappear" from radar screens as long as they are coated with this special substance. Canadian Hyperstealth biotechnology company recently stated that the "quantum stealth" materials and related technologies they have developed have achieved major breakthroughs and have been recognized by the U.S. and Canadian military.
"Quantum cloaking" materials can achieve the amazing effect of "complete invisibility" by refracting surrounding light. This material can be used to make invisibility cloaks to help soldiers on the battlefield complete difficult combat tasks through invisibility. Guy Cramer, CEO of the company, said: Quantum stealth materials can not only help special forces complete raids during the day, but also help soldiers escape smoothly when encountering unexpected events. In addition, this material is also expected to be applied in the next generation of stealth fighters, submarines and tanks, making them truly invisible and helping the troops to complete the mission of attacking the enemy invisibly. ”