Designing Electronic Structures of Multiscale Helical Converters for Tailored Ultrabroad Electromagnetic Absorption

Highlights The energy conversion mechanism is thoroughly analyzed, with a detailed quantitative characterization of the dissipation capacities of polarization, conduction, and magnetic loss. Inspired by DNA transcription, atom and geometry configurations co-modulating multi-scale helical converters...

Celý popis

Uloženo v:
Podrobná bibliografie
Vydáno v:Nano-micro letters Ročník 17; číslo 1; s. 20 - 17
Hlavní autoři: Feng, Zhaobo, Liu, Chongbo, Li, Xin, Luo, Guangsheng, Zhai, Naixin, Hu, Ruizhe, Lin, Jing, Peng, Jinbin, Peng, Yuhui, Che, Renchao
Médium: Journal Article
Jazyk:angličtina
Vydáno: Singapore Springer Nature Singapore 01.12.2025
Springer Nature B.V
SpringerOpen
Témata:
3d–2p orbital coupling
Atomic structure
Broadband
Broadband EM wave absorption
Carbon nanotubes
Configurations
Coupling
Cross polarization
Doping
Electromagnetic absorption
Electromagnetic radiation
Electron spin
Electronic structure
Electrons
Energy
Energy conversion
Engineering
Helical structure
Metal–nonmetal co-doping
Metamaterials
Nanoscale Science and Technology
Nanotechnology
Nanotechnology and Microengineering
Polarization (spin alignment)
Radar cross sections
Spin polarization
Thickness
2
3
Broadband EM wave absorption
Spin polarization
Helical structure
orbital coupling
Metal–nonmetal co-doping
3d–2p orbital coupling
ISSN:2311-6706, 2150-5551, 2150-5551
On-line přístup:Získat plný text
Tagy: Přidat tag
Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!
Popis
Shrnutí:Highlights The energy conversion mechanism is thoroughly analyzed, with a detailed quantitative characterization of the dissipation capacities of polarization, conduction, and magnetic loss. Inspired by DNA transcription, atom and geometry configurations co-modulating multi-scale helical converters achieve the RL min of −63.13 dB at 1.29 mm, and the maximum RCS reduction value reach 36.4 dB m 2 . Orbital coupling, spin and cross polarization synergize to realize a 6.08 GHz EAB, further expanding to ultrabroad electromagnetic wave absorption of 12.16 GHz through metamaterial design . Atomic-scale doping strategies and structure design play pivotal roles in tailoring the electronic structure and physicochemical property of electromagnetic wave absorption (EMWA) materials. However, the relationship between configuration and electromagnetic (EM) loss mechanism has remained elusive. Herein, drawing inspiration from the DNA transcription process, we report the successful synthesis of novel in situ Mn/N co-doped helical carbon nanotubes with ultrabroad EMWA capability. Theoretical calculation and EM simulation confirm that the orbital coupling and spin polarization of the Mn–N 4 –C configuration, along with cross polarization generated by the helical structure, endow the helical converters with enhanced EM loss. As a result, HMC-8 demonstrates outstanding EMWA performance, achieving a minimum reflection loss of −63.13 dB at an ultralow thickness of 1.29 mm. Through precise tuning of the graphite domain size, HMC-7 achieves an effective absorption bandwidth (EAB) of 6.08 GHz at 2.02 mm thickness. Furthermore, constructing macroscale gradient metamaterials enables an ultrabroadband EAB of 12.16 GHz at a thickness of only 5.00 mm, with the maximum radar cross section reduction value reaching 36.4 dB m 2 . This innovative approach not only advances the understanding of metal–nonmetal co-doping but also realizes broadband EMWA, thus contributing to the development of EMWA mechanisms and applications.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
content type line 23
ISSN:2311-6706
2150-5551
2150-5551
DOI:10.1007/s40820-024-01513-2