Meaghan's Minute: Invisibility Cloak
Today on Meaghan's Minute, brought to you by Memory Protection Devices, an effective invisibility cloak that is thin, scalable and adaptive to different types and sizes of objects has been successfully demonstrated by two researchers at the Edward S. Rogers Senior Department of Electrical & Computer Engineering.
The new approach surrounds an object with small antennas that collectively radiate an electromagnetic field, which cancels out any waves scattering off the cloaked object.
According to the researchers, it’s like picturing a mailbox sitting on the street. When light hits the mailbox and bounces back into your eyes, you see the mailbox. When radio waves hit the mailbox and bounce back to your radar detector, you detect the mailbox. This new system wraps the mailbox in a layer of tiny antennas that radiate a field away from the box, cancelling out any waves that would bounce back. In this way, the mailbox becomes undetectable to radar.
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