Plasmon-Assisted Etching (image) University of Illinois College of Engineering Share Print E-Mail Caption Experimentally obtained image of a Fresnel zone plate (left) for focusing light that is fabricated with plasmon-assisted etching. A two-dimensional array of pillar-supported bowtie nanoantennas [zoomed in image (right)] comprises this flat lens. Credit University of Illinois Usage Restrictions None Share Print E-Mail 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.