Highly efficient hierarchically porous carbon-silica composite for sub-terahertz stealth and shielding applications.

ABSTRACT: The development of future 6G communication systems necessitates advanced materials for efficient electromagnetic interference shielding in the sub-terahertz frequency range. This study presents the preparation, porosimetry analysis, compositional and electromagnetic characterization of a highly efficient hierarchically porous carbon-silica composite suitable for shielding and stealth applications in this frequency regime. The composite, fabricated using a mixture of carbon powder and tetraethoxysilane, possesses a highly porous structure with high surface area, which facilitates multiple reflections and scattering of electromagnetic waves. Electromagnetic characterization was conducted using a free-space semi-optical method at 140-220 GHz, focusing on reflection-only measurements due to th

SUBMITTER: Xenidis N 

PROVIDER: S-EPMC11930209 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature