Scholarlink

<p>There are a few reports on broadband optical MAs using a whole unpatterned Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> layer or patch-type Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> resonators, and this paper presents a broadband optical MA using the slotted 30-nm-thick Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> layer. The proposed MA can achieve the absorptivity over 90% in the wavelength range of 630–986&#xa0;nm. More significantly, the absorptivity beyond 98% is achieved in the wavelength range of 697–920&#xa0;nm. The function of the slotted 30-nm-thick Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> layer is demonstrated by the comparison between the proposed MA and a similarly constructed structure with the top material replaced by gold. The absorption mechanism is investigated by the distribution of electric field, in which the local surface plasmon resonance (SPR) is quantitatively identified to contribute to the enhancement of absorption. Moreover, the proposed MA is insensitive to incident angles within 60°. Furthermore, the simulated results as well as the design robustness are demonstrated by the calculated ones using the multi-reflection interference theory.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Broadband perfect absorption achieved by double-square-slotted Ti3C2Tx layer

  • 期刊论文

  • 发表日期：

    2025年6月21日

查看全文
  • Dong Mei Liu,
  • Liang Cheng Liu,
  • Jiu Fu Ruan,
  • Sheng Wei Ji

摘要

There are a few reports on broadband optical MAs using a whole unpatterned Ti3C2Tx layer or patch-type Ti3C2Tx resonators, and this paper presents a broadband optical MA using the slotted 30-nm-thick Ti3C2Tx layer. The proposed MA can achieve the absorptivity over 90% in the wavelength range of 630–986 nm. More significantly, the absorptivity beyond 98% is achieved in the wavelength range of 697–920 nm. The function of the slotted 30-nm-thick Ti3C2Tx layer is demonstrated by the comparison between the proposed MA and a similarly constructed structure with the top material replaced by gold. The absorption mechanism is investigated by the distribution of electric field, in which the local surface plasmon resonance (SPR) is quantitatively identified to contribute to the enhancement of absorption. Moreover, the proposed MA is insensitive to incident angles within 60°. Furthermore, the simulated results as well as the design robustness are demonstrated by the calculated ones using the multi-reflection interference theory.