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作者

Xinxue Tang Yunchen Long Jing Zhong Zheng Zhang Fei Yin Zhonghai Ni Ken Cham-Fai Leung Kai Sun Runhua Fan & …Juan Song

作者单位

⁵School of Chemistry & Chemical Engineering, Shandong University, Jinan, 250100, Shandong, China ³School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, 221116, China ⁴Department of Chemical Engineering, School of Engineering, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK ¹Department of Clinical Laboratory, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, 250117, Shandong, China ²Institute of Brain Science and Brain-Inspired Research, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, 250117, Shandong, China ⁷College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai, 201306, China ⁶Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China

刊名

Advanced Composites and Hybrid Materials

年份

2025

卷号

Vol.8 No.1

ISSN

2522-0128

关键词

Epsilon-near-zero Radio frequency Magnetic-driven performance Negative permittivity Metacomposites

摘要

Remarkably low permittivity at plasma frequency for epsilon-near-zero materials has garnered significant interest. This study reports a flexible magnetically driven radio frequency ENZ material. Cobalt nanoparticles, cobalt–nickel, and iron-cobalt–nickel alloy nanoparticles were in situ synthesized on the inner walls of carbon nanotubes and subsequently incorporated into thin films with waterborne polyurethane . Notably, in the FeCoNi@CNTs-PU film, the real permittivity transfers from negative...更多

Remarkably low permittivity at plasma frequency for epsilon-near-zero materials has garnered significant interest. This study reports a flexible magnetically driven radio frequency ENZ material. Cobalt nanoparticles, cobalt–nickel, and iron-cobalt–nickel alloy nanoparticles were in situ synthesized on the inner walls of carbon nanotubes and subsequently incorporated into thin films with waterborne polyurethane . Notably, in the FeCoNi@CNTs-PU film, the real permittivity transfers from negative to positive, achieving ENZ performance at 45 MHz. Additionally, the findings indicate a gradual decrease in plasma frequency associated with the alloying process. The underlying mechanisms have been investigated through theoretical calculations, which reveal that as metals are synthesized and alloyed on the inner walls of CNTs, the band structure experiences a flattening effect and non-parabolic enhancement, leading to an increase in effective electron mass. Furthermore, the FeCoNi@CNTs-PU film exhibits exceptional magnetic driving capabilities and flexibility. This positions ENZ materials as promising candidates for applications in magnetically driven actuators and implantable electronic devices.收起

文献类型

期刊