Effect of hollow structure on solar thermal applications of Au nanodiscs

A tungsten-based metamaterial emitter for solar thermophotovoltaic systems

“…5(a), (b), (d) and (e) show that the top square cavity concentrates strong electric and magnetic fields, indicating that the cavity resonance (CR) due to the cavity structure holds a crucial position in enhancing performance of the metamaterial emitter. 50,51 Additionally, Fig. 5(b) displays a lateral perspective on the electric field distribution, and the strong electric field near the top due to local interaction is an important sign of guided mode resonance (GMR).…”