It looks like cloaking devices are on the way to no longer being just a science fiction dream and might be getting closer to reality.
Penn State University researchers have created an underwater cloak able to redirect sound waves so objects appear invisible. According to USA Today, the “invisibility” cloak uses a metamaterial holding properties not usually found in natural materials, allowing sound waves to bend around an object so that it appears to not be seen.
Amanda Hanford, assistant professor of acoustics at Penn State’s Applied Research Laboratory, said in a statement, “These materials sound like a totally abstract concept, but the math is showing us that these properties are possible. So, we are working to open the floodgates to see what we can create with these materials.”
The researchers used a steel-plated pyramid structure to test the device underwater.
This is yet another attempt by scientists and researchers to bring amazing fictional technology into reality. Researchers at the University of California-San Diego and the University of Rochester have both tried to create an invisibility cloak before.
– Blair Halliday