Journal Article terahertz Research Support, Non-U.S. Gov't phase discontinuities coherent control diffraction metamaterials metasurfaces Metals Metasurfaces Pancharatnam-Berry phase Pancharatnam-Berry phase optical element air-cathodes anode‐free lithium metal batteries asymmetric transmissions broadband broadband terahertz generation chirality complete control coupling‐controlled chiral meta‐atom covalent organic frameworks dendrite suppression dielectric electrochemical behaviors graphene foams high Li+/e− transport ratio high-Q resonances highly conductive interphasial chemistry ion‐conducting membranes