GO metalens (IMAGE) Compuscript Ltd Caption Demonstration of GO metalens and its characterization. (a) Optical demonstration for optical needle generated by GO metalens. (b) Optical demonstration for four axial focal spots generated by GO metalens. (c) Optical image of GO metalens taken by an optical microscope with an objective of ×20, NA=0.5, the scale bar is 50 μm. Credit Opto-Electronic Advances Usage Restrictions None License Licensed 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.