Graphene-Si₃N₄ Metamaterial Absorber

Broadband strong absorption

Ultrathin layered structure achieves average 86.71% IR absorption across 1–14 μm, tunable via layer count or bias.

Guang, Yang · Zecheng G.A.O. · Shenghua, Duan · Chen, Cheng · Taige L.I.U. · Zihan, Qing · Chenming, Wang · Zhang, Xinyu

Optical Materials Express 2023

Specifications

Average IR absorption

{'zh': '约86.71', 'en': '~86.71'} %

for incident angles

{'zh': '0', 'en': '80'} °

Advantages

Polarization-independent

Absorption tunable by adjusting number of graphene-Si₃N₄ layers or applying bias voltage