Tunable rainbow light trapping in ultrathin resonator arrays

Light squeezed into nanoscale metallic gaps has a myriad of applications in sensing, energy, and nonlinear optics. Recently, scientists at the University of Toronto have developed a new paradigm for the design of ultrathin metallic nanostructures which allows for precision tailoring to fit any desired application. This design strategy, coupled with a novel fabrication technique, provides a promising platform for the advancement of nanoscale optics.