Printable all-dielectric water-based absorber

被引：14

作者：

Bradley, Patrick J. ^{[1
,2
]}

Torrico, Max O. Munoz ^{[1
]}

Brennan, Conor ^{[2
]}

Hao, Yang ^{[1
]}

机构：

[1] Queen Mary Univ London, Sch Elect Engn & Comp Sci, London E1 4NS, England

[2] Dublin City Univ, Sch Elect Engn, Dublin D09 W6Y4, Ireland

来源：

SCIENTIFIC REPORTS | 2018年 / 8卷

基金：

英国工程与自然科学研究理事会;

关键词：

PEC CYLINDERS; SCATTERING; METASURFACES; BAND;

D O I：

10.1038/s41598-018-32395-1

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The phase interplay between overlapping electric and magnetic dipoles of equal amplitude generated by exclusively alldielectric structures presents an intriguing paradigm in the manipulation of electromagnetic energy. Here, we offer a holistic implementation by proposing an additive manufacturing route and associated design principles that enable the programming and fabrication of synthetic multi-material microstructures. In turn, we compose, manufacture and experimentally validate the first demonstrable 3d printed all-dielectric electromagnetic broadband absorbers that point the way to circumventing the technical limitations of conventional metal-dielectric absorber configurations. One of the key innovations is to judicially distribute a dispersive soft matter with a high-dielectric constant, such as water, in a low-dielectric matrix to enhance wave absorption at a reduced length scale. In part, these results extend the promise of additive manufacturing and illustrate the power of topology optimisation to create carefully crafted magnetic and electric responses that are sure to find new applications across the electromagnetic spectrum.

引用

页数：11

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