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Dielectric Properties of Glass Capillary Arrays

Published online by Cambridge University Press:  10 February 2011

T. E. Huber ,
Leo Silber  and
Frank Boccuzzi
T. E. Huber
Affiliation:
Polytechnic University, Brooklyn, N.Y. 11201. Howard University, Washington, D.C. 20059.
Leo Silber
Affiliation:
Polytechnic University, Brooklyn, N.Y. 11201.
Frank Boccuzzi
Affiliation:
Polytechnic University, Brooklyn, N.Y. 11201.
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Abstract

Glass Capillary Arrays (GCA) are low density columnar monolithic structures made of soda-lime glass. This structure, in which 76% of volume between the columns, the channels, is void, also has a greatly reduced dielectric constant in comparison with bulk glass. We have measured the index of refraction and absorption of samples of GCA's in the X-band, 8 × 109 Hz to 1.2×1010 Hz, for various orientations of the channels with respect to the polarization. For channels perpendicular to the polarization direction we have measured an index of refraction of 1.15. In comparison the index of refraction of (bulk) soda-lime glass is 2.6. We also examined the absorption in the far-infrared (FIR) frequency range between 6×1011 Hz and 6×1012 Hz. In this frequency range we obtain a k2 dependence due to losses in the glass matrix at higher frequencies. The results of the X-band and FIR results are interpreted in terms of an effective medium theory of the real and imaginary part of the dielectric constant of the composite.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 511: Symposium E – Low Dielectric Constant Materials IV , 1998 , 117
Copyright
Copyright © Materials Research Society 1998

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References

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