Phenolic multiple kinetics-dynamics and discrete crystallization thermodynamics in amorphous carbon nanostructures for electromagnetic wave absorption

Jiaqi Tao, Kexin Zou, Jintang Zhou (), Hongjing Wu (), Linling Xu, Jin Wang (), Xuewei Tao, Hexia Huang () and Zhengjun Yao ()
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Jiaqi Tao: Nanjing University of Aeronautics and Astronautics
Kexin Zou: Nanjing University of Aeronautics and Astronautics
Jintang Zhou: Nanjing University of Aeronautics and Astronautics
Hongjing Wu: Northwestern Polytechnical University
Linling Xu: Nanjing University
Jin Wang: Nanjing University of Posts and Telecommunications
Xuewei Tao: Nanjing Institute of Technology
Hexia Huang: Nanjing University of Aeronautics and Astronautics
Zhengjun Yao: Nanjing University of Aeronautics and Astronautics

Nature Communications, 2024, vol. 15, issue 1, 1-12

Abstract: Abstract The lack of a chemical platform with high spatial dimensional diversity, coupled with the elusive multi-scale amorphous physics, significantly hinder advancements in amorphous electromagnetic wave absorption (EWA) materials. Herein, we present a synergistic engineering of phenolic multiple kinetic dynamics and discrete crystallization thermodynamics, to elucidate the origin of the dielectric properties in amorphous carbon and the cascade effect during EWA. Leveraging the scalability of phenolic synthesis, we design dozens of morphologies from the bottom up and combine with in-situ pyrolysis to establish a nanomaterial ecosystem of hundreds of amorphous carbon materials. Based on controlled discrete crystallization, nano-curvature regulation of spatial inversion symmetry-breaking structures, and surface electric field enhancement from multi-shell structures, the multi-scale charge imbalance triggers intense polarization. Both experiments and theories show that each scale is essential, which collectively drives broadband absorption (8.46 GHz) and efficient dissipation (−54.77 dB) of EWA performance. Our work on the amorphous nanostructure platform and the cascade effect can contribute to uncovering the missing pieces in amorphous physics and EWA research.

Date: 2024
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DOI: 10.1038/s41467-024-54770-5

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