Electromagnetic properties of polyurethane template-based carbon foams in Ka-band

被引：23

作者：

Bychanok, D. ^{[1
]}

Plyushch, A. ^{[1
]}

Piasotski, K. ^{[1
]}

Paddubskaya, A. ^{[1
]}

Voronovich, S. ^{[1
]}

Kuzhir, P. ^{[1
]}

Baturkin, S. ^{[2
]}

Klochkov, A. ^{[2
]}

Korovin, E. ^{[3
]}

Letellier, M. ^{[4
]}

Schaefer, S. ^{[4
]}

Szczurek, A. ^{[4
]}

Fierro, V. ^{[4
]}

Celzard, A. ^{[4
]}

机构：

[1] Res Inst Nucl Problems BSU, Minsk 220030, BELARUS

[2] Ryazan State Radio Engn Univ, Ryazan 390005, Russia

[3] Tomsk State Univ, Tomsk 634050, Russia

[4] Univ Lorraine, CNRS, ENSTIB, Inst Jean Lamour,UMR 7198, F-88026 Epinal, France

来源：

PHYSICA SCRIPTA | 2015年 / 90卷 / 09期

关键词：

carbon foams; electromagnetic response; Ka-band; COMPOSITES; FREQUENCY;

D O I：

10.1088/0031-8949/90/9/094019

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The electromagnetic (EM) properties of polyurethane template-based reticulated carbon foams were investigated in the 26-37 GHz microwave frequency range (Ka-band). It was experimentally proved that carbon foams of a thickness of 2 mm and a density of 22-55 mg cm(-3) are almost not transparent to microwave radiation, and this is especially true for the densest ones. Depending on bulk density, the EM response of carbon foams in the microwave region can be mainly accounted for by either reflection or absorption. EM shielding efficiency of more dilute samples is due to absorption mechanisms, whereas denser foams provide up to 80% reflection of EM signals. EM properties of carbon foams in the Ka-band can be accurately predicted by a very simple model based on Fresnel formulae developed in this communication.

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页数：6

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