期刊
APPLIED PHYSICS EXPRESS
卷 5, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1143/APEX.5.015102
关键词
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资金
- Mid-career Researcher Programs [R01-2008-000-20702-0, 2011-0016173]
- SRC [R11-2008-095-01000-0]
- PRC through National Research Foundation [2011-0030745]
- Korea Government (MEST)
- Ajou University
We demonstrate that a filtration method is efficient for the fabrication of thick single-walled nanotube films and is capable of shielding terahertz waves. Shielding effectiveness can be engineered by controlling the film thickness and we achieved 38 dB for a 950-nm-thick film. In addition, we found that the films exhibit a dispersion of dielectric constant obeying the Drude free-electron model, whereas the plasma frequency decreases with increasing film thickness. Based on the nanotube films with a thickness greater than the skin depth, we fabricated grid polarizers by laser-machining process, which enable us to achieve a large polarization extinction ratio. (C) 2012 The Japan Society of Applied Physics
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