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The Control of spatial electromagnetic (EM) waves has always been an attractive prospect, especially with the emergence of metasurfaces, which introduce additional manipulating methods and degrees of freedom. In this paper, a design is proposed to realize reconfigurable and programmable space channels for non‐reciprocal transmissions of EM waves through the use of active metasurface. The layout of...
Persistent luminescent materials can continue to emit light after stopping excitation, and their stored energy is gradually released during the decay time after persistent emitting, which makes the color and luminance changes in slow decay and plays an important role in protecting information and combating forgery. When combined with other anti‐counterfeiting technologies to form a multi‐modal and...