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Can Invisibility Cloaks Finally Achieve The Invisibility Of Objects?

2010/7/26 20:31:00 77

According to a recent British Daily Mail website, scientists at Michigan Technological University have made a cloak of cloaking with glass microchips, making the plot of Harry, Potter and other science fiction into reality. The relevant research report is published in the recently published journal of Applied Physics Letters.

When the light shines on the surface of the object, it will reflect and enter the naked eye so that people can see the corresponding object.

But researchers from Michigan Technological University have discovered a way to trap infrared rays, enabling infrared rays to bend around objects, thus achieving stealth of objects.

Once the visible light is bent through this technology, the objects covered by it will disappear from people's eyes.

This kind of nonmetallic material developed by Professor Elena Simogina "

Cloak

"The same glass resonators, made of vulcanized glass, are not conductive.

In computer simulation, the "cloak" enables the object to be stealthy at the wavelength of about one micron.

This is the first attempt by scientists to use glass materials to achieve the bending of light.

Professor Sai Mo Kim Aa's "cloak of invisibility" was adopted.

Metamaterials

This kind of material is made of artificial compound, which has the supernormal characteristics that ordinary natural materials do not possess.

This metamaterial is made up of micro glass resonators, not composed of atoms or molecules of natural materials. It is an interdisciplinary research product of materials science and electronic engineering.

The miniature resonant plates are arranged in the form of concentric rings, forming a shape similar to that of a cylinder.

A magnetic resonance is generated in the concentric ring to achieve the bending of the light around the object and finally achieve the stealth of the object.

The research team is currently conducting further tests to detect ceramic resonances and metals.

Cloak

Stealth effect at microwave frequencies.

Scientists carried out experiments in the Michigan Technological University's anechoic laboratory: This is a caves like structure, which is covered with deep gray foam cones with high sound absorption function and equipped with antennas for microwave pmission or reception.

The wavelength of microwave is far greater than that of infrared, and its wavelength can reach several centimeters.

The researchers said: "from these experiments, we will further study the cloak's stealth effect at higher frequencies and smaller wavelengths.

The most anticipated thing is to achieve stealth at visible frequencies.

If more progress can be made, the invisibility cloak will enter the daily life prediction in 30 years.