Title :
Microwave and terahertz detection in bundles of single-wall carbon nanotubes
Author :
Yngvesson, K.S. ; Fu, K. ; Fu, B. ; Zannoni, R. ; Adams, S.H. ; Ouarraoui, A. ; Carrion, E. ; Donovan, J. ; Muthee, M. ; Nicholson, J. ; Polizzi, E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Massachusetts, Amherst, MA
Abstract :
We present new data on microwave detection in bundles of carbon nanotubes (CNTs). In particular, we derive a circuit model based on ANA measurements. We also demonstrate the first terahertz detection (up to 2.54 THz) in bundles of CNTs that were deposited through dielectrophoresis across the smallest gap in log-periodic antennas. Data are given that support the hypothesis that the detection process is bolometric at THz frequencies. Future extensions are planned that will employ suspended CNTs and explore heterodyne detection. Finally, we have performed unique ab initio simulations of CNTs with the aim of comparing these with the experimental data.
Keywords :
ab initio calculations; bolometers; carbon nanotubes; electrophoresis; heterodyne detection; log periodic antennas; microwave detectors; nanotube devices; submillimetre wave antennas; submillimetre wave detectors; ANA measurements; C; ab initio simulations; bolometry; dielectrophoresis; heterodyne detection; log-periodic antennas; microwave detection; single-wall carbon nanotube bundles; suspended CNT; terahertz detection; Antenna measurements; Bolometers; Carbon nanotubes; Detectors; Diodes; Electromagnetic heating; Frequency measurement; Heat sinks; Microwave devices; Performance evaluation;
Conference_Titel :
Infrared, Millimeter and Terahertz Waves, 2008. IRMMW-THz 2008. 33rd International Conference on
Conference_Location :
Pasadena, CA
Print_ISBN :
978-1-4244-2119-0
Electronic_ISBN :
978-1-4244-2120-6
DOI :
10.1109/ICIMW.2008.4665760