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11 September 2007 Optical polarizer made of mechanically aligned carbon nanotubes
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Abstract
We report optical polarizer made of single-wall carbon nanotubes/poly(vinyl alcohol) composite. The film of the composite was mechanically stretched to form uniaxial alignment of carbon nanotubes in the polymer matrix. In order to obtain well-aligned carbon nanotubes efficiently, we used single-wall carbon nanotubes shortened into the length of less than 200 nm. Thanks to π plasmon-originated broad absorption spectrum and strong anisotropy of single-wall carbon nanotubes, the film exhibits the degree of polarization of ~ 95 % with keeping flat transmittance through spectral region from 350 nm to 800 nm. We also observed enhancement of the degree of polarization at the wavelengths of van Hove singularities.
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Satoru Shoji, Hidemasa Suzuki, Remo Proietti Zaccaria, Zouheir Sekkat, and Satoshi Kawata "Optical polarizer made of mechanically aligned carbon nanotubes", Proc. SPIE 6645, Nanoengineering: Fabrication, Properties, Optics, and Devices IV, 664516 (11 September 2007); https://doi.org/10.1117/12.735468
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