Lignin-Derived Lightweight Carbon Aerogels for Tunable Epsilon-Negative Response.

ABSTRACT: Electromagnetic (EM) metamaterials have garnered considerable attention due to their capacity to achieve negative parameters, significantly influencing the integration of natural materials with artificially structural media. The emergence of carbon aerogels (CAs) offers an opportunity to create lightweight EM metamaterials, notable for their promising EM shielding or absorption effects. This paper introduces an efficient, low-cost method for fabricating CAs without requiring stringent drying conditions. By finely tuning the ZnCl₂/lignin ratio, the porosity is controlled in CAs. This control leads to an epsilon-negative response in the radio-frequency region, driven by the intrinsic plasmonic state of the 3D carbon network, as opposed to traditional periodic building blocks. This

SUBMITTER: Qu Y 

PROVIDER: S-EPMC11234391 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature