0587990 - FZÚ 2025 RIV DE eng J - Článek v odborném periodiku
Kumar, Prabhat - Šilhavík, Martin - Parida, Manas Ranjan - Kužel, Petr - Červenka, Jiří
3D graphene straintronics for broadband terahertz modulation.
Advanced Electronic Materials. Roč. 10, č. 8 (2024), č. článku 2300853. ISSN 2199-160X. E-ISSN 2199-160X
Grant CEP: GA ČR(CZ) GX19-28375X; GA ČR(CZ) GA23-05895S; GA MŠMT EH22_008/0004558
GRANT EU: European Commission(XE) 101028425 - 3D-AM-TERA
Institucionální podpora: RVO:68378271
Klíčová slova: 3D graphene * straintronic * terahertz * modulation
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 5.3, rok: 2023 ; AIS: 1.475, rok: 2023
Způsob publikování: Open access
DOI: https://doi.org/10.1002/aelm.202300853

In this study, a strain engineering route is presented for the active control of terahertz shielding and absorption properties in 3D graphene through the application of mechanical strain. A straintronic modulator based on 3D graphene is demonstrated, capable of modulating absorption and reflection of THz radiation in real-time over a wide range of 0.1–3 THz. The modulator can be tuned to exhibit either shielding capability with a specific shielding effectiveness of 0.3 × 10^5 dB cm2 g−1 or stealth characteristics with an average reflection loss of 25 dB and 99.4% absorption. These findings open new avenues for leveraging 2D materials in their 3D porous form, where strain-induced changes in interlayer interactions enable control over the properties of these materials. This discovery unveils vast unexplored physical phenomena with immense potential for advanced THz imaging, radar, and electromagnetic applications.
Trvalý link: https://hdl.handle.net/11104/0355082