Title :
Controlling terahertz conductivity in SWNT/polymer composite
Author :
D. Polley;A. Barman;R. K. Mitra
Author_Institution :
Department of Condensed Mater Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Block-JD, Sector-III, Saltlake, Kolkata 700098, India
Abstract :
Terahertz (THz) conductivity of single walled carbon nanotube (SWNT)/poly-vinyl alcohol (PVA) composites has been studied in the frequency window of 0.3-2.0 THz. It is found that conductivity of these samples can be efficiently tuned by changing the length of the SWNTs and also the SWNT weight fraction. For the highest weight fraction at a frequency of 1 THz, longer SWNT sample (average length ~15 μm) showed ~90% increased conductivity than its shorter counterpart (average length ~2 μm) having the same diameter. A modified Universal Dielectric Response (UDR) model is applied to analyze the conductivity spectra.
Keywords :
"Conductivity","Polymers","Carbon nanotubes","Films","Frequency-domain analysis","Temperature measurement","Frequency modulation"
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2015 40th International Conference on
Electronic_ISBN :
2162-2035
DOI :
10.1109/IRMMW-THz.2015.7327654
