基于三维石墨烯的可拉伸太赫兹吸波材料

Stretchable terahertz absorbing properties based on three-dimensional graphene

通过将三维石墨烯材料与聚二甲基硅氧烷薄膜相结合,设计并研制了一种宽带可拉伸的太赫兹波吸收材料,设计结构可以使三维石墨烯在聚二甲基硅氧烷层的保护下实现大幅度拉伸。实验结果表明,该吸波材料在0.2~1.1 THz的测试范围内有最高90%的吸收率,同时在20%的拉伸量下复合结构对太赫兹波吸收率基本保持不变,并且在去掉外力时材料样品的结构和性能均可恢复至原始状态。可拉伸太赫兹吸波材料具有带宽大、吸收率高、加工简单以及可大面积制备等优点,在太赫兹吸收器等领域中具有潜在的应用价值。

Based on the three-dimensional graphene material,a broadband stretchable terahertz absorbing material was developed by combining 3D graphene materials with Polydimethylsiloxane(PDMS)film.The designed structure allows the three-dimensional graphene to achieve substantial stretching under the protection of the polydimethylsiloxane layers.The experimental results show that the composite structural material has a maximum absorption rate of 90%in the test range of 0.2-1.1 THz,and the terahertz wave absorption rate of the composite structure remains substantially unchanged under a tensile force of 20%.In addition,the structure and properties of the material sample can be restored to the original state when the external force is removed.Stretchable terahertz absorbing materials have the advantages of high bandwidth,high absorption rate,simple processing and large-area preparation,which has a great potential applications in field such as terahertz absorbers.