Ultrathin Capacitive Metasurfaces for Strong Electric Response

Ultrathin capacitive metasurfaces, comprising nonresonant metal strips or patches, are shown to cause exceptionally large phase discontinuity of incoming light. The strong electric response in metasurfaces leading to phase discontinuity is demonstrated experimentally and characterized using effective medium theory. Without needing resonant optical scatterers, these metasurfaces enable deep subwavelength planar photonics. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.