Experimental setup (IMAGE) Optica Caption Student Naixuan Zhao designed a tri-channel metasurface for displaying three different images. The exhibited experimental setup is employed to project holographic images. Credit Qi Dai, Wuhan University Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.