Microwave transmission loss in multi-walled nanotubes

✍ Scribed by Jun, S. C. ;Cha, S. N. ;Lee, S. ;Jang, J. E. ;Jin, Y. W. ;Kim, H. J. ;Hone, J. ;Kim, J. M.

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 600 KB
• Volume: 205
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200723170

✦ Synopsis

Abstract

Experimental results for microwave transmission losses of individual multi‐walled carbon nanotubes (MWNTs) are presented. Samples with MWNTs, as well as samples with‐out MWNTs, were fabricated with two types of electrode materials (Nb vs. Cr/Au) and configurations to compare AC transmissions loss as passive devices at room temperature. In the MWNT‐Nb samples, the transmitted current is higher and attenuation is lower than the MWNT‐Cr/Au samples. However, the transmission loss increases much faster in the Nb samples than Cr/Au samples with increasing frequency. Overall, their S ‐parameter measurements from 0.5 GHz to 110 GHz support frequency‐dependent microwave dissipation of the MWNTs and the metal‐electrode contact. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)