A printed flexible broad-band THz absorber based on 2D Ti3C2Tx MXene

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Applied Surface Science Pub Date : 2025-07-01 DOI:10.1016/j.apsusc.2025.163956

Chenghong Zhang, Tianyue Xu, Xiaolian Chen, Wei Ding, Wei Wang, Jialiang Luo, Wenming Su, Chuanfang Zhang, Zhigao Sheng

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Abstract

Obtaining a large-area, low-cost, broadband THz absorber is crucial for THz device research. However, due to limitations in the existing manufacturing techniques, fabrication of large-scale and broadband absorbers working on the THz frequency still remains challenging. In this study, we design a multi-frequency resonant metamaterial with a three-layer structure based on Ti₃C₂T_x MXene, a rising 2D family of transition metal carbides and nitrides. Large area of 170 × 170 mm² and 840 periodic resonant substructures in three-layer are nanoimprinted on PET substrate using viscous MXene inks. The printed metamaterial exhibits over 90 % absorption across a broad frequency range of 0.4 THz to 1.48 THz, with an effective absorption bandwidth of approximately 1.08 THz. Comparative analysis confirms the superiority of the designed three-layer structure in achieving broadband strong absorption. Furthermore, extensive fatigue and THz imaging tests demonstrate that the printed low-cost, large-area flexible metamaterial not only possesses excellent anti-fatigue properties but also exhibits a significant THz stealth effect. This work will open a new insight toward developing broadband THz meta absorbers, and its promising flexibility, as well as large size demonstrate its potential in real-life applications.

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基于二维Ti3C2Tx MXene的印刷柔性宽带太赫兹吸收体

获得大面积、低成本、宽带太赫兹吸收体是太赫兹器件研究的关键。然而，由于现有制造技术的限制，在太赫兹频率上工作的大规模宽带吸收器的制造仍然具有挑战性。在这项研究中，我们设计了一种基于Ti3C2Tx MXene的三层结构的多频谐振超材料，Ti3C2Tx MXene是新兴的二维过渡金属碳化物和氮化物家族。采用黏性MXene油墨在PET衬底上刻印了大面积170 × 170 mm2和840个三层周期谐振子结构。打印的超材料在0.4 THz至1.48 THz的宽频率范围内具有超过90% %的吸收率，有效吸收带宽约为1.08 THz。对比分析证实了所设计的三层结构在实现宽带强吸收方面的优越性。此外，大量的疲劳和太赫兹成像测试表明，打印的低成本、大面积柔性超材料不仅具有优异的抗疲劳性能，而且具有显著的太赫兹隐身效果。这项工作将为开发宽带太赫兹元吸收器开辟新的思路，其具有良好的灵活性，以及大尺寸显示了其在实际应用中的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Surface Science 工程技术-材料科学：膜

CiteScore

12.50

自引率

7.50%

发文量

3393

审稿时长

67 days

期刊介绍： Applied Surface Science covers topics contributing to a better understanding of surfaces, interfaces, nanostructures and their applications. The journal is concerned with scientific research on the atomic and molecular level of material properties determined with specific surface analytical techniques and/or computational methods, as well as the processing of such structures.