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Quasi-Optical Terahertz Polarizers Enabled by Inkjet Printing of Carbon Nanocomposites

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posted on 03.12.2013 by Arindam Das, Thomas Schutzius, Constantine M. Megaridis
We report a new approach for cost-effective manufacturing of THz quasi-optical polarizers by inkjet printing of polymer-carbon nanowhisker (CNW) dispersions. The electromagnetic interference properties of coatings with fixed CNW/polymer composition and varying thickness are quantified by a frequency domain THz spectroscopy system in the range 570-630GHz. A shielding effectiveness of ~40dB is attained for 70m-thick coatings. A prototype THz polarizer printed on Mylar film displayed transmission and absorbance that varied with polarization orientation. The degree of polarization for film thickness of ~1μm was 0.35. This performance can be improved by refining grid dimensions, increasing coating thickness and adopting multi-layer polarizer structures.

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This work was partially supported by NSF Grants ECCS-1002088 and ECCS-1102214

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Copyright 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters and may be found at http://apl.aip.org/.

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American Institute of Physics

Language

en_US

issn

0003-6951

Issue date

01/12/2012

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