RF Response of Single-Walled Carbon Nanotubes

• Published in: Nano letters Vol. 7; no. 9; pp. 2672 - 2675
• Main Authors: Gomez-Rojas, Luis, Bhattacharyya, Somnath, Mendoza, Ernest, Cox, David C, Rosolen, J. Mauricio, Silva, S. Ravi P
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 01.09.2007
• Subjects: Applied sciences; Cross-disciplinary physics: materials science; rheology; Crystallization - methods; Electric Impedance; Electronics; Exact sciences and technology; Macromolecular Substances - chemistry; Materials science; Materials Testing; Molecular Conformation; Molecular electronics, nanoelectronics; Nanocrystalline materials; Nanoscale materials and structures: fabrication and characterization; Nanotechnology - methods; Nanotubes; Nanotubes, Carbon - chemistry; Nanotubes, Carbon - radiation effects; Nanotubes, Carbon - ultrastructure; Particle Size; Physics; Radio Waves; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Surface Properties; Singlewalled nanotube; Nanotube devices; Nanowires; High-frequency effects; High frequency; Nanostructured materials; Physical properties; Nanotechnology
• DOI: 10.1021/nl0710598
• ISSN: 1530-6984

We present for the first time an in-depth study of the RF response of a single-walled carbon nanotube (SWCNT) rope. Our novel electrode design, based on a tapered coplanar approach, allows for single tube measurements well into the GHz regime, minimizing substrate-related parasitics. From the analysis of the S-parameters, the ac transport mechanism in the range 30 kHz to 6 GHz is established. This work is an essential prerequisite for the fabrication of high-speed devices based on bundles of nanowires or low-dimensional structures.