论文信息 - Passive electrical properties of multi-walled carbon nanotubes up to 0.1 THz

Passive electrical properties of multi-walled carbon nanotubes up to 0.1 THz

Metallic carbon nanotubes (CNTs) are promising as transmission lines or interconnects in radio-frequency nanoelectric circuits. This paper presents passive network properties of individual multi-walled carbon nanotubes (MWNTs) up to 110 GHz measured at room temperature. From the S-parameter data, frequency-dependent electric properties of the MWNT were extracted using an equivalent R-L-C circuit model. The ac impedance of the MWNT decreases significantly with increasing frequency, as predicted by earlier theoretical work. In particular, the equivalent resistance decreases a few hundred times. Our findings show that MWNTs can carry high-frequency currents much better than dc.

[1] Beyond the linearity of current-voltage characteristics in multiwalled carbon nanotubes , 2006, cond-mat/0610519.

[2] P. J. Burke. An RF circuit model for carbon nanotubes , 2003 .

[3] Christoph Strunk,et al. Contacting carbon nanotubes selectively with low-ohmic contacts for four-probe electric measurements , 1998 .

[4] P. McEuen,et al. Suppression of tunneling into multiwall carbon nanotubes. , 2000, Physical review letters.

[5] P. Ajayan,et al. Reliability and current carrying capacity of carbon nanotubes , 2001 .

[6] L. Roschier,et al. Multiwalled carbon nanotube: Luttinger versus fermi liquid , 2001 .

[7] G. Doolen,et al. Frequency dependence of the admittance of a quantum point contact , 1998 .

[8] P. Burke,et al. Microwave transport in metallic single-walled carbon nanotubes. , 2005, Nano letters.

[9] AC impedance of multi-walled carbon nanotubes , 2007 .