Hidden from view
This graphic representation shows how three active sources cloak an incoming circular wave (like ripples from a stone dropped in water), creating a quiet zone for the object to be cloaked. This is just for one frequency.
Credit: Fernando Guevara Vasquez, University of Utah
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Engineering researcher Dr. Andrea Alù discusses his award and research. Alù is a pioneer in the field of metamaterials who has developed "cloaking" technology to make objects invisible to sensors.