State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, Shanghai, 200438, China.
Adv Mater. 2014 Dec 23;26(48):8120-5. doi: 10.1002/adma.201403735. Epub 2014 Oct 22.
Aligned carbon-nanotube (CNT) sheets are used as building blocks to prepare light-weight, frequency-tunable and high-performance microwave absorbers, and the absorption frequency can be accurately controlled by stacking them with different intersectional angles. A remarkable reflection loss of -47.66 dB is achieved by stacking four aligned CNT sheets with an intersectional angle of 90° between two neighboring ones. The incorporation of a second phase such as a metal and a conducting polymer greatly enhances the microwave-absorption capability.
排列的碳纳米管（CNT）片被用作构建块，以制备重量轻、频率可调谐且性能高的微波吸收体，并且通过以不同的交角堆叠它们，可以精确地控制吸收频率。通过堆叠四个排列的 CNT 片，相邻两个 CNT 片之间的交角为 90°，可以实现显著的-47.66 dB 的反射损耗。掺入第二相（如金属和导电聚合物）可大大提高微波吸收能力。
