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3D Printing of Periodic Porous Metamaterials for Tunable Electromagnetic Shielding Across Broad Frequencies.
Lv, Qinniu; Peng, Zilin; Pei, Haoran; Zhang, Xinxing; Chen, Yinghong; Zhang, Huarong; Zhu, Xu; Wu, Shulong.
Affiliation
  • Lv Q; State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065, People's Republic of China.
  • Peng Z; State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065, People's Republic of China.
  • Pei H; State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065, People's Republic of China.
  • Zhang X; State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065, People's Republic of China.
  • Chen Y; State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065, People's Republic of China. johnchen@scu.edu.cn.
  • Zhang H; Baosheng Technology Innovation Corporation Limited, No. 1, Suzhong Road, Baoying County, Yangzhou, 225800, People's Republic of China.
  • Zhu X; Baosheng Technology Innovation Corporation Limited, No. 1, Suzhong Road, Baoying County, Yangzhou, 225800, People's Republic of China.
  • Wu S; Baosheng Technology Innovation Corporation Limited, No. 1, Suzhong Road, Baoying County, Yangzhou, 225800, People's Republic of China.
Nanomicro Lett ; 16(1): 279, 2024 Sep 03.
Article in En | MEDLINE | ID: mdl-39225896
ABSTRACT
The new-generation electronic components require a balance between electromagnetic interference shielding efficiency and open structure factors such as ventilation and heat dissipation. In addition, realizing the tunable shielding of porous shields over a wide range of wavelengths is even more challenging. In this study, the well-prepared thermoplastic polyurethane/carbon nanotubes composites were used to fabricate the novel periodic porous flexible metamaterials using fused deposition modeling 3D printing. Particularly, the investigation focuses on optimization of pore geometry, size, dislocation configuration and material thickness, thus establishing a clear correlation between structural parameters and shielding property. Both experimental and simulation results have validated the superior shielding performance of hexagon derived honeycomb structure over other designs, and proposed the failure shielding size (Df ≈λ/8 - λ/5) and critical inclined angle (θf ≈43° - 48°), which could be used as new benchmarks for tunable electromagnetic shielding. In addition, the proper regulation of the material thickness could remarkably enhance the maximum shielding capability (85 - 95 dB) and absorption coefficient A (over 0.83). The final innovative design of the porous shielding box also exhibits good shielding effectiveness across a broad frequency range (over 2.4 GHz), opening up novel pathways for individualized and diversified shielding solutions.
Key words

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Nanomicro Lett Year: 2024 Document type: Article Country of publication:

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Nanomicro Lett Year: 2024 Document type: Article Country of publication: