Metasurface Absorber Based on TiN Octagonal Hollow Structure

Xuyue Hu

doi:10.47297/taposatWSP2633-456916.20260707

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Metasurface Absorber Based on TiN Octagonal Hollow Structure

7卷第7期

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Metasurface Absorber Based on TiN Octagonal Hollow Structure
Metasurface Absorber Based on TiN Octagonal Hollow Structure
School of Electronic Information Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, China
2026年7卷第7期页码：85-88
网络首发：2026-08-21，

纸质出版：2026-07-30
DOI：10.47297/taposatWSP2633-456916.20260707
Accepted：

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Xuyue Hu. (2026). Metasurface Absorber Based on TiN Octagonal Hollow Structure. 科技理论与实践（英文版）, 7(7), 85-88.

Hu Xuyue.Metasurface Absorber Based on TiN Octagonal Hollow Structure[J].Theory and Practice of Science and Technology,2026,07(07):85-88.
Xuyue Hu. (2026). Metasurface Absorber Based on TiN Octagonal Hollow Structure. 科技理论与实践（英文版）, 7(7), 85-88. DOI： 10.47297/taposatWSP2633-456916.20260707.

Hu Xuyue.Metasurface Absorber Based on TiN Octagonal Hollow Structure[J].Theory and Practice of Science and Technology,2026,07(07):85-88. DOI： 10.47297/taposatWSP2633-456916.20260707.

摘要

Abstract

This work designs and investigates an ultrawideband solar absorber based on a TiN octagonal hollow metamaterial structure. The proposed absorber uses a typical three-layer configuration. From top to bottom

these layers are: a periodically arranged TiN octagonal hollow array layer

a SiO₂ dielectric layer

and a TiN reflective layer. Across the operational wavelength range

the absorber reaches an average absorptivity of 95%. Near-perfect absorption peaks can be seen at around 402 nm

508 nm

and 742 nm. By examining the magnetic field distribution

we find that the high absorption performance comes from the synergistic coupling among three distinct modes: surface plasmon polariton resonance

guided-mode resonance

and cavity resonance. Tolerance analysis of the geometric parameters shows that the structure handles fabrication deviations very well for key parameters like TiN array height

base side length

dielectric layer thickness

and slit width. Overall

the designed absorber brings together several advantages

including ultrawideband high absorption

resistance to high temperatures

and structural robustness. These features make it very promising for use in solar photothermal conversion and thermophotovoltaic systems.

关键词

Keywords

references

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