{"title":"用纳米球组装合成桑葚状铁纳米粒子及其优异的电磁吸收特性","authors":"Fuli Yang, Bo Zou, Lirui Wang","doi":"10.1142/s021798492442003x","DOIUrl":null,"url":null,"abstract":"<p>Considering the development of ultra-wideband detection technology, the effective attenuation performance of conventional electromagnetic absorbing materials prepared by component-morphology method is still affected by narrowband, which hinders its application. An effective strategy is to develop nanomagnetic metal absorbent that can effectively overcome skin effect through fine control based on nanotechnology. Mulberry-like Fe nanoparticles based on the self-assembly of spheroid blocks were synthesized in a simple chemical reduction process supplemented by a magnetic field. In view of synergistic loss of magnetic metal Fe, and unique physical properties of nanoparticles, the mulberry-like Fe nanoparticles exhibited attractive wave-absorbing properties. At a thickness of 3<span><math altimg=\"eq-00001.gif\" display=\"inline\"><mspace width=\".17em\"></mspace></math></span><span></span>mm, the minimum reflection loss (RL) reaches −29.57<span><math altimg=\"eq-00002.gif\" display=\"inline\"><mspace width=\".17em\"></mspace></math></span><span></span>dB, and the bandwidth less than −10<span><math altimg=\"eq-00003.gif\" display=\"inline\"><mspace width=\".17em\"></mspace></math></span><span></span>dB reaches 8.38<span><math altimg=\"eq-00004.gif\" display=\"inline\"><mspace width=\".17em\"></mspace></math></span><span></span>GHz, which covers the entire X-band, most of the <i>C</i>-band and part of the Ku-band. This will make it possible for electromagnetic protection and electromagnetic stealth. A possible growth mechanism was proposed to provide theoretical guidance for the subsequent preparation of nanomagnetic metal absorbent.</p>","PeriodicalId":18570,"journal":{"name":"Modern Physics Letters B","volume":"8 1","pages":""},"PeriodicalIF":1.8000,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synthesis of mulberry-like Fe nanoparticles assembly by nano-spheres and its excellent electromagnetic absorption properties\",\"authors\":\"Fuli Yang, Bo Zou, Lirui Wang\",\"doi\":\"10.1142/s021798492442003x\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Considering the development of ultra-wideband detection technology, the effective attenuation performance of conventional electromagnetic absorbing materials prepared by component-morphology method is still affected by narrowband, which hinders its application. An effective strategy is to develop nanomagnetic metal absorbent that can effectively overcome skin effect through fine control based on nanotechnology. Mulberry-like Fe nanoparticles based on the self-assembly of spheroid blocks were synthesized in a simple chemical reduction process supplemented by a magnetic field. In view of synergistic loss of magnetic metal Fe, and unique physical properties of nanoparticles, the mulberry-like Fe nanoparticles exhibited attractive wave-absorbing properties. At a thickness of 3<span><math altimg=\\\"eq-00001.gif\\\" display=\\\"inline\\\"><mspace width=\\\".17em\\\"></mspace></math></span><span></span>mm, the minimum reflection loss (RL) reaches −29.57<span><math altimg=\\\"eq-00002.gif\\\" display=\\\"inline\\\"><mspace width=\\\".17em\\\"></mspace></math></span><span></span>dB, and the bandwidth less than −10<span><math altimg=\\\"eq-00003.gif\\\" display=\\\"inline\\\"><mspace width=\\\".17em\\\"></mspace></math></span><span></span>dB reaches 8.38<span><math altimg=\\\"eq-00004.gif\\\" display=\\\"inline\\\"><mspace width=\\\".17em\\\"></mspace></math></span><span></span>GHz, which covers the entire X-band, most of the <i>C</i>-band and part of the Ku-band. This will make it possible for electromagnetic protection and electromagnetic stealth. 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引用次数: 0
摘要
考虑到超宽带探测技术的发展,传统的分量形态法制备的电磁吸波材料的有效衰减性能仍然受到窄带的影响,阻碍了其应用。一种有效的策略是基于纳米技术,通过精细控制,开发出能有效克服皮肤效应的纳米磁性金属吸波材料。通过简单的化学还原过程并辅以磁场,合成了基于球状块自组装的桑葚状铁纳米粒子。鉴于磁性金属铁的协同损耗和纳米粒子的独特物理性质,桑椹状铁纳米粒子表现出极具吸引力的吸波特性。在厚度为 3 毫米时,最小反射损耗(RL)达到 -29.57dB,带宽小于 -10dB,达到 8.38GHz,覆盖了整个 X 波段、大部分 C 波段和部分 Ku 波段。这将使电磁防护和电磁隐身成为可能。该研究提出了一种可能的生长机制,为后续制备纳米磁性金属吸波材料提供了理论指导。
Synthesis of mulberry-like Fe nanoparticles assembly by nano-spheres and its excellent electromagnetic absorption properties
Considering the development of ultra-wideband detection technology, the effective attenuation performance of conventional electromagnetic absorbing materials prepared by component-morphology method is still affected by narrowband, which hinders its application. An effective strategy is to develop nanomagnetic metal absorbent that can effectively overcome skin effect through fine control based on nanotechnology. Mulberry-like Fe nanoparticles based on the self-assembly of spheroid blocks were synthesized in a simple chemical reduction process supplemented by a magnetic field. In view of synergistic loss of magnetic metal Fe, and unique physical properties of nanoparticles, the mulberry-like Fe nanoparticles exhibited attractive wave-absorbing properties. At a thickness of 3mm, the minimum reflection loss (RL) reaches −29.57dB, and the bandwidth less than −10dB reaches 8.38GHz, which covers the entire X-band, most of the C-band and part of the Ku-band. This will make it possible for electromagnetic protection and electromagnetic stealth. A possible growth mechanism was proposed to provide theoretical guidance for the subsequent preparation of nanomagnetic metal absorbent.
期刊介绍:
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