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Enhanced THz transmission apertures through sub-wavelength annular apertures

Gallant, A.J. and Levitt, J.A. and Kaliteevski, M. and Wood, D. and Petty, M.C. and Abram, R.A. and Brand, S. and Chamberlain, J.M. (2006) 'Enhanced THz transmission apertures through sub-wavelength annular apertures.', Proceedings of SPIE., 6323 . p. 632316.


We report on the development of a surface micromachined process for the fabrication of coaxial apertures surrounded by periodic grooves. The process uses a combination of copper electroforming and the negative epoxy based resist, SU8, as a thin flexible substrate. The device dimensions are suitable for the implementation of filters at THz frequencies, and measurements show a pass band centred around 1.5 THz. These devices could form the basis of the next generation of THz biosensors.

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Publisher statement:Copyright 2006 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Record Created:16 Dec 2010 16:05
Last Modified:25 Jan 2011 12:25

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