Electrically driven nanoantenna metasurface for coherent thermal emission
Abstract
Nanoantennas and their arrays (metasurfaces) provide a versatile platform for controlling the coherence of thermal emission. Conventional designs rely on global heating, which impedes emission efficiency and on-chip integration. In this work, we propose an electrically driven metasurface composed of a Yagi-Uda nanoantenna array interconnected by S-shaped electrode wires, which enables the concurrent manipulation of thermal emission spectrally and directionally. A direct simulation approach based on the Wiener-chaos expansion method is employed for quantitative analysis. Our metasurface device exhibits a narrowband emission with high directivity, which is one order higher than that of a single nanorod antenna case. The modeling framework established in this work opens a promising route for realizing coherent mid-infrared emission by metasurfaces.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 16, 2023
- Source ID
- 10.1063/5.0165104
Entities
People
- Hakan Salihoglu
- Hyeong Seok Yun
- Lin Jing
- Sheng Shen
- Xiao Luo
- Xiu Liu
- Zexiao Wang
Organizations
- Carnegie Mellon University
- Defense Threat Reduction Agency
- National Science Foundation