Nanowerk February 16, 2019
An international team of researchers (Finland, USA – Duke University) introduced purely local reflective metasurfaces for arbitrary manipulations of the power distribution of reflected waves without excitation of any auxiliary evanescent field. The method is based on the analysis of the power flow distribution and the adaptation of the reflector shape to the desired distribution of incident and reflected fields. As a result, they found that these power-conformal metamirrors can be easily implemented with conventional passive unit cells. The results can be used for the design of reflecting surfaces with multiple functionalities and for waves of different physical nature. This idea can be applied to acoustic and electromagnetic waves...read more. Open Access TECHNICAL ARTICLEÂ
Photo of metasurface. Image: Aalto University