Design of Transparent Metasurfaces Based on Asymmetric Nanostructures for Directional and Selective Absorption.

ABSTRACT: Maximizing the solar heat gain through windows in winter and minimizing the solar radiation entering the room in summer are of great significance for the energy saving of buildings. Here, we present a new idea for transparent metasurfaces, based on asymmetric metal/insulator/metal (MIM) nanostructures, which can be switched back and forth between absorbing and reflecting solar radiation by reversing the sample orientation. Owing to the fundamental mode of a low-quality-factor resonance, a selective near-infrared absorption is obtained with an absorption peak value of 90% upon front illumination. The average solar absorption (45%) is about 10% higher than that (35%) of reported transparent absorbers. The near-infrared light is also strongly and selectively reflected upon back illumination a

SUBMITTER: Wu D 

PROVIDER: S-EPMC7504014 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature