Engineered metasurfaces reflect waves in unusual directions
New metasurfaces can even split energy into more than one
Aalto University
Metasurfaces are artificial structures, composed of periodic arranged of meta-atoms at subwavelength scale. Meta-atoms are made of traditional materials but, if they are placed in a periodic manner, the surface can show many unusual effects that cannot be realized by the materials in nature. In their article the researchers use power-flow conformal metasurfaces to engineer the direction of reflected waves.
'Existing solutions for controlling reflection of waves have low efficiency or difficult implementation,' says Ana Díaz-Rubio, postdoctoral researcher at Aalto University. 'We solved both of those problems. Not only did we figure out a way to design high efficient metasurfaces, we can also adapt the design for different functionalities. These metasurfaces are a versatile platform for arbitrary control of reflection.'
'This is really an exciting result. We have figured out a way to design such a device and we test it for controlling sound waves. Moreover, this idea can be applied to electromagnetic fields,' Ana explains.
Original publication
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