柔性S波段电磁超材料的研制及其微波消融应用

阮海玲; 汪涛; 洪汝涛

doi:10.19554/j.cnki.1001-3563.2025.17.008

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包装工程（技术栏目） ›› 2025, Vol. 46 ›› Issue (17) : 69-79. DOI: 10.19554/j.cnki.1001-3563.2025.17.008

轻质宽频电磁复合材料

柔性S波段电磁超材料的研制及其微波消融应用

阮海玲^1,2,3, 汪涛⁴, 洪汝涛^1,*

作者信息 +

Development of Flexible S-band Electromagnetic Metamaterials and Their Application in Microwave Ablation

RUAN Hailing^1,2,3, WANG Tao⁴, HONG Rutao^1,*

Author information +

文章历史 +

摘要

目的针对体模2.45 GHz微波消融及S波段电磁隐身需要,设计一款柔性S波段超材料吸波器,并实验测试其在微波消融过程中对体模加热的影响。方法基于微波等效电路和三维电磁场分析相结合的设计方法,用导电材料将超材料图案层固化在有机介质衬底上得到实物样品。将平直或弯曲状态的超材料放置在体模四周不同位置,实验测试微波消融时体模内部等间距点处的温度变化。结果该吸波器总厚度仅为8 mm,在平直和弯曲状态下实验测试其在S波段吸收率大于80%,在2.45 GHz的能量吸收率大于95%。超材料与体模相对位置改变时,微波消融过程中体模内部的温度变化差异显著,等间距点处的最大温差超过10 ℃。结论超材料吸波器对微波消融过程中体模等间距点处的温度变化有显著影响,可避免碳化及过度治疗,对未来实现智能化适形化微波消融有参考作用。

Abstract

To meet the needs of 2.45 GHz microwave ablation and S-band electromagnetic stealth applications, the work aims to develop a flexible S-band metamaterial absorber and measure its effect on phantom heating during microwave ablation. By using the design method that combined microwave equivalent circuit analysis with three-dimensional electromagnetic field analysis, the pattern layer was printed by organic conductive materials on an organic dielectric substrate to manufacture a metamaterial prototype. This metamaterial was then positioned around a phantom with a plane or curved configuration, and temperature changes at equidistant points inside the phantom during microwave ablation were measured. With a total thickness of only 8 mm, the absorber was measured in both plane and curved configurations, and its absorption rate in the S-band exceeded 80% and its energy absorption rate at 2.45 GHz was greater than 95%. Additionally, when the relative position between the metamaterial and the phantom changed, there was a significant difference in temperature changes in the phantom during microwave ablation, and the maximum temperature differences exceeded 10 °C at equidistant points. As a result, the metamaterial absorber significantly affects temperature changes at equidistant points in the phantom during microwave ablation, which is helpful for preventing carbonization and overtreatment. This advancement positively impacts the future of intelligent and conformal microwave ablation.

导出引用

阮海玲, 汪涛, 洪汝涛. 柔性S波段电磁超材料的研制及其微波消融应用[J]. 包装工程（技术栏目）. 2025, 46(17): 69-79 https://doi.org/10.19554/j.cnki.1001-3563.2025.17.008

RUAN Hailing, WANG Tao, HONG Rutao. Development of Flexible S-band Electromagnetic Metamaterials and Their Application in Microwave Ablation[J]. Packaging Engineering. 2025, 46(17): 69-79 https://doi.org/10.19554/j.cnki.1001-3563.2025.17.008

中图分类号： TB33

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