Flat lenses
Abstract
research highlights SOLUTE STRENGTHENING SUPERCONDUCTIVITY whole. Now, Francesco Aieta and colleagues have demonstrated a flat lens design based How to pin a screw Switched by light on metasurfaces. Such arrays of low-loss Science 347, 635–639 (2015) Science 347, 743–746 (2015) dielectric resonators allow continuous Ionic liquids used as gate dielectrics in control of the phase profile, making it transistors enable large carrier densities in the possible not only to correct the...