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Microwave transmission loss in multi‐walled nanotubes
Author(s) -
Jun S. C.,
Cha S. N.,
Lee S.,
Jang J. E.,
Jin Y. W.,
Kim H. J.,
Hone J.,
Kim J. M.
Publication year - 2008
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200723170
Subject(s) - carbon nanotube , materials science , microwave , attenuation , electrode , dissipation , metal , transmission loss , transmission (telecommunications) , optoelectronics , nanotechnology , electrical engineering , metallurgy , optics , chemistry , telecommunications , physics , engineering , computer science , thermodynamics
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)