Specular Reflections: Plasmonic Metaparticles on a Blackbody Create Vivid Reflective Colors for Naked‐Eye Environmental and Clinical Biodetection (Adv. Mater. 4/2018)

Ultrafine plasmonic nanoparticles have been identified for their Mie plasmonic resonance, though with radiation losses. In article number 1704442, Mady Elbahri and co‐workers describe how the janusity of the plasmonic interference of excited plasmonic nanoparticles induces low‐loss specular radiation and vivid colors on a blackbody. Such fascinating features, plus the Brewster effect, lead to the realization of naked‐eye detection of diseased exosomes containing analytes, unattainable in the extinction Mie mode.