26 April 2010 Effect of periodic roughness and surface defects on the terahertz scattering behavior of cylindrical objects
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Abstract
This paper discusses the effect of periodic roughness and surface defects on the electromagnetic scattering of terahertz waves from cylindrical objects. The cylinders, possessing periodic roughness imparted during their fabrication process, had average roughness values ranging from approximately 0.1 μm - 0.50 μm. Metallic cylinders were fabricated from lathe-turned aluminum rods and dielectric cylinders were fabricated using a rapid prototype technique (stereolithography). The scattering behavior of the rough cylinders was measured in 160 GHz and 350 GHz compact radar ranges. In addition, the effect of seams and grooves on the scattering behavior of cylinders will also be presented.
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A. Jagannathan, A. J. Gatesman, T. Horgan, T. Goyette, M. Coulombe, R. H. Giles, W. E. Nixon, "Effect of periodic roughness and surface defects on the terahertz scattering behavior of cylindrical objects", Proc. SPIE 7671, Terahertz Physics, Devices, and Systems IV: Advanced Applications in Industry and Defense, 76710E (26 April 2010); doi: 10.1117/12.852909; https://doi.org/10.1117/12.852909
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