2005/12/31 by Ferenc Borondics, F. Borondics, K. Kamaras +7 · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Carbon Nanotubes in Composites #Mechanical and Optical Resonators #Thermal Radiation and Cooling Technologies #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.74.045431
published as Physical Review B, 045431 (2006) · 6 pages, 4 figures, submitted to Phys. Rev. B v3: Fig. 2 replaced, changes in caption of Table II, minor changes in text
arxiv created 2006/06/21 · openalex publication_date 2006/07/31 · arxiv updated 2013/05/29 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We report on the transmission over a wide frequency range (from the far infrared through the visible) of pristine and hole-doped, free-standing carbon nanotube films at temperatures between 50 and 300\phantom\rule0.3em0exK. Optical constants are estimated by Kramers-Kronig analysis of the transmittance. We see evidence in the far infrared for a gap below 10\phantom\rule0.3em0exmeV. Hole doping causes a shift of spectral weight from the first interband transition into the far infrared. Temperature dependence in both the doped and undoped samples is restricted to the far-infrared region.