Huang Weiqiang, Liu Xuebin, Wang Yunfan, Feng Jiyong, Huang Junhua, Dai Zhenxi, Yang Shaodian, Pei Songfeng, Zhong Jing, Gui Xuchun
State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou, 510275, People's Republic of China.
National Key Laboratory of Materials for Integrated Circuits, Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, People's Republic of China.
Nanomicro Lett. 2025 Apr 27;17(1):234. doi: 10.1007/s40820-025-01750-z.
With the rapid development of electronic detective techniques, there is an urgent need for broadband (from microwave to infrared) stealth of aerospace equipment. However, achieving effective broadband stealth primarily relies on the composite of multi-layer coatings of different materials, while realizing broadband stealth with a single material remains a significant challenge. Herein, we reported a highly compact MXene film with aligned nanosheets through a continuous centrifugal spraying strategy. The film exhibits an exceptional electromagnetic interference shielding effectiveness of 45 dB in gigahertz band (8.2-40 GHz) and 59 dB in terahertz band (0.2-1.6 THz) at a thickness of 2.25 μm, owing to the high conductivity (1.03 × 10 S m). Moreover, exceptionally high specific shielding effectiveness of 1.545 × 10 dB cm g⁻ has been demonstrated by the film, which is the highest value reported for shielding films. Additionally, the film exhibits an ultra-low infrared emissivity of 0.1 in the wide-range infrared band (2.5-16.0 μm), indicating its excellent infrared stealth performance for day-/nighttime outdoor environments. Moreover, the film demonstrates efficient electrothermal performance, including a high saturated temperature (over 120 °C at 1.0 V), a high heating rate (4.4 °C s at 1.0 V), and a stable and uniform heating distribution. Therefore, this work provides a promising strategy for protecting equipment from multispectral electromagnetic interference and inhibiting infrared detection.
随着电子探测技术的迅速发展，航空航天设备迫切需要宽带（从微波到红外）隐身。然而，实现有效的宽带隐身主要依赖于不同材料多层涂层的复合，而用单一材料实现宽带隐身仍然是一项重大挑战。在此，我们通过连续离心喷涂策略报道了一种具有排列纳米片的高度致密的MXene薄膜。该薄膜在2.25μm厚度时，在千兆赫兹频段（8.2 - 40GHz）表现出45dB的优异电磁干扰屏蔽效能，在太赫兹频段（0.2 - 1.6THz）表现出59dB的屏蔽效能，这归因于其高电导率（1.03×10 S m）。此外，该薄膜还展示了1.545×10 dB cm g⁻的超高比屏蔽效能，这是屏蔽薄膜报道的最高值。此外，该薄膜在宽范围红外波段（2.5 - 16.0μm）表现出0.1的超低红外发射率，表明其在白天/夜间户外环境中具有优异的红外隐身性能。此外，该薄膜还展示了高效的电热性能，包括高饱和温度（在1.0V时超过120°C）、高加热速率（在1.0V时为4.4°C s）以及稳定且均匀的热分布。因此，这项工作为保护设备免受多光谱电磁干扰和抑制红外探测提供了一种有前景的策略。
