Broadband electromagnetic characterization of carbon foam to metal contact

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• 作者：D. Micheli ; R.B. Morles ; M. Marchetti ; F. Moglie ; V. Mariani Primiani
• 刊名：Carbon
• 出版年：March, 2014
• 年：2014
• 卷：68
• 期：Complete
• 页码：149-158
• 全文大小：5834 K

文摘

We investigated how the electrical contact of carbon foam with metallic surface can reduce its shielding properties. The bubble structure of the foam does not ensure a good electrical contact with the metal, and it leads to a significant reduction of the shielding effectiveness. A finite element numerical simulation was carried out by adopting a bubble/pore model of the internal microstructure of the foam, recovered by means of scanning electron microscope images. Experimental tests were carried out by inserting carbon foam samples into a coaxial transmission line. Numerical results agree well with experimental result showing significant performance reduction with respect to an ideal electrical contact.