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Multi-Scale Design of Ultra-Broadband Microwave Metamaterial Absorber Based on Hollow Carbon/MXene/Mo2C Microtube
Small ( IF 13.0 ) Pub Date : 2023-01-15 , DOI: 10.1002/smll.202207051 Jianqiao Wang 1 , Ze Wu 1 , Youqiang Xing 1 , Bingjue Li 1 , Peng Huang 1 , Lei Liu 1
Small ( IF 13.0 ) Pub Date : 2023-01-15 , DOI: 10.1002/smll.202207051 Jianqiao Wang 1 , Ze Wu 1 , Youqiang Xing 1 , Bingjue Li 1 , Peng Huang 1 , Lei Liu 1
Affiliation
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Developing various nanocomposite microwave absorbers is a crucial means to address the issue of electromagnetic pollution, but remains a challenge in satisfying broadband absorption at low thickness with dielectric loss materials. Herein, an ultra-broadband microwave metamaterial absorber (MMA) based on hollow carbon/MXene/Mo2C (HCMM) is fabricated by a multi-scale design strategy. The microscopic 1D hierarchical microtube structure of HCMM contributes to break through the limit of thickness, exhibiting a strong reflection loss of -66.30 dB (99.99997 wave absorption) at the thinnest matching thickness of 1.0 mm. Meanwhile, the strongest reflection loss of -87.28 dB is reached at 1.4 mm, superior to most MXene-based and Mo2C-based microwave absorbers. Then, the macroscopic 3D structural metasurface based on the HCMM is simulated, optimized, and finally manufactured. The as-prepared flexible HCMM-based MMA realizes an ultra-broadband effective absorption in the range of 3.7-40.0 GHz at a thickness of 5.0 mm, revealing its potential for practical application in the electromagnetic compatibility field.
中文翻译：
基于中空碳/MXene/Mo2C微管的超宽带微波超材料吸波器的多尺度设计
开发各种纳米复合微波吸收剂是解决电磁污染问题的重要手段，但用介电损耗材料满足低厚度宽带吸收仍然是一个挑战。在此，通过多尺度设计策略制造了一种基于中空碳/MXene/Mo 2 C (HCMM) 的超宽带微波超材料吸收器 (MMA)。HCMM的微观一维分层微管结构有助于突破厚度极限，在最薄匹配厚度1.0 mm处表现出-66.30 dB（99.99997波吸收）的强反射损耗。同时，在 1.4 mm 处达到 -87.28 dB 的最强反射损耗，优于大多数 MXene 基和 Mo 2C基微波吸收剂。然后，模拟、优化并最终制造基于 HCMM 的宏观 3D 结构超曲面。所制备的基于 HCMM 的柔性 MMA 在 5.0 mm 的厚度下实现了 3.7-40.0 GHz 范围内的超宽带有效吸收，揭示了其在电磁兼容领域的实际应用潜力。
更新日期：2023-01-15
中文翻译：
基于中空碳/MXene/Mo2C微管的超宽带微波超材料吸波器的多尺度设计
开发各种纳米复合微波吸收剂是解决电磁污染问题的重要手段，但用介电损耗材料满足低厚度宽带吸收仍然是一个挑战。在此，通过多尺度设计策略制造了一种基于中空碳/MXene/Mo 2 C (HCMM) 的超宽带微波超材料吸收器 (MMA)。HCMM的微观一维分层微管结构有助于突破厚度极限，在最薄匹配厚度1.0 mm处表现出-66.30 dB（99.99997波吸收）的强反射损耗。同时，在 1.4 mm 处达到 -87.28 dB 的最强反射损耗，优于大多数 MXene 基和 Mo 2C基微波吸收剂。然后，模拟、优化并最终制造基于 HCMM 的宏观 3D 结构超曲面。所制备的基于 HCMM 的柔性 MMA 在 5.0 mm 的厚度下实现了 3.7-40.0 GHz 范围内的超宽带有效吸收，揭示了其在电磁兼容领域的实际应用潜力。
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