Electromagnetic Brain-Computer-Metasurface Holography

As an important bridge between the human brain and external devices, the brain-computer interface (BCI) has received much attention for decades. To further explore the connection between the human brain signals and electromagnetic (EM) information, here we propose a brain-computer-metasurface holography (BCMH) system to enable the brain control of EM imaging. By using a P300-based BCI and a 1-bit programmable metasurface, BCMH can precisely reproduce specific EM holographic images according to the operator's intentions. Twenty distinct images are designed and tested with BCMH, showing good consistency with the theoretical expectation. The proposed BCMH, integrating the EM manipulation capability with intelligence of the human brain, may provide a new paradigm of interactions among the human, intelligent metasurfaces, and machines, and hence promote the visual-reality (VR) technology.