Introduction of quantum invisibility cloak;
The quantum invisibility cloak is made of quantum invisibility material, which makes the wearer "invisible" by reflecting the light waves around the wearer. This technology can also be used in the military, so that soldiers can wear "invisible military uniforms" and avoid night vision goggles.
The principle of quantum invisibility cloak;
In an interview with CNN, Canada's "Super Invisible Biotechnology" company first announced their incredible invention of "invisible coat". According to Guy Kramer, CEO of the company, the official name of "invisible coat" is "quantum invisible camouflage fabric", which is a high-tech achievement of the company after years of secret research. This magical cloth can bend the surrounding light, so that people covered by it can't see it at all!
However, due to confidentiality reasons, Super Invisible Biotechnology Company refused to provide the media with the application effect of the actual samples of Invisible Fabric, and released several "simulation renderings" in official website through the computer software PS. Judging from these "simulation renderings", the stealth effect of this "invisible fabric" is amazing.
When a woman covers it and lies on the hay, its surface also becomes hay, blending with its surroundings; When women stand in front of the corridor walls and bushes respectively, the surface of the "invisible fabric" becomes a wall and bush pattern realistically, making the woman's body magically disappear!
What is the material of quantum invisibility cloak?
Pendely's team is studying whether an object can be made invisible by wrapping it in a "cloak" made of metamaterials. The material structure used in this cloak has been specially treated to capture the light above and adjust the direction of the light around this object. Because this object can't reflect light, it has successfully disappeared. Pendely believes that with this technology, he can quickly produce his "invisibility cloak".
It sounds incredible, but there are enough examples today to show that the structure of a substance can affect its appearance. For example, the bright blue wings of the South American butterfly do not contain any pigment, and its color comes from the reflection of light.
Modern stealth aircraft can avoid radar tracking because a special coating containing metal particles is used to absorb the energy emitted by radar. These metal ions act as "antennas". Pendely said that using anti-radar coating material is like painting something black.
You can't get any radar echoes from this object, but you can find holes there. A good way to be invisible is to divert radar waves and light waves around an object, thus hiding any signs of its existence. This is the function of metamaterials. The team led by Pendely has demonstrated the technology to make dust particles suddenly disappear.
Does the quantum invisibility cloak really exist?
Scientists at Duke University in the United States announced that they had uncovered the truth of the "quantum invisibility cloak" and successfully let an object with an area of 5 square inches escape microwave detection. This stealth technology is realized by wrapping the object in a "metamaterial", which can change the direction of the microwave and make it bypass the object.
Duke University researchers say they hope to develop invisibility cloaks that can avoid other types of electromagnetic radiation, so that the areas covered by invisibility cloaks can even avoid visible light.
Metamaterials guide light around the surface of an object, forming a hole, so the light cannot touch or see the object in the hole. Duke University engineers pointed out that the electromagnetic characteristics of heterogeneous composites can produce a substance with variable refractive index, which blocks electromagnetic waves from entering a certain area, thus achieving invisibility. The light hitting the invisibility cloak flows through the hidden object and continues to spread in the other direction.
Therefore, the invisibility cloak neither reflects light nor produces shadows. The invisibility cloak displayed this time uses a row of copper rings and copper wires, which are wrapped in glass fiber composite materials. These concentric and coplanar rings guide microwave radiation by changing the shape of copper equipment, bypassing the area of invisibility cloak.