Reconfigurable Metasurface for Dynamical Modulation of Reflection, Transmission, and Absorption

In this paper, a reconfigurable metasurface is proposed for dynamically modulating reflection, transmission, and absorption. The proposed metasurface is based on tri-layer structure, with varactors loaded on the top and bottom layers. By applying proper bias voltages to the varactors, this metasurface can achieve nearly full-range modulation of reflection, transmission, and absorption. This metasurface paves a new way for dynamic modulation of electromagnetic waves, and may find various applications in practice.