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Title: Effect of grain direction on transmittance of 100-GHz millimeter wave for hinoki (Chamaecyparis obtusa)
Authors: Tanaka, Soichi  kyouindb  KAKEN_id
Fujiwara, Yuko
Fujii, Yoshihisa
Okumura, Shogo
Togo, Hiroyoshi
Kukutsu, Naoya
Nagatsuma, Tadao
Author's alias: 田中, 聡一
Keywords: Millimeter wave
Fiber direction
Issue Date: Jun-2011
Publisher: Springer, Part of Springer Science+Business Media
Journal title: Journal of Wood Science
Volume: 57
Issue: 3
Start page: 189
End page: 194
Abstract: The attenuation coefficients of 100-GHz millimeter waves polarized linearly were measured for cross-cut, quarter-sawn, and flat-sawn boards of hinoki (Chamaecyparis obtusa) that were 0.2–2.0 cm thick. This was done to examine the applicability of free-wave propagation theory for applying electromagnetic waves to wood. It was found that the transmittance of a millimeter wave through the specimen boards was lower when the fiber direction of a board was parallel to the direction of the electric field of the incident wave than when the fiber direction was perpendicular to the electric field, and there was little difference in the transmittance between the tangential and radial directions for the former case. These findings can be quantitatively explained by using propagation theory and the dielectric properties of wood.
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This is not the published version. Please cite only the published version.
DOI(Published Version): 10.1007/s10086-010-1160-z
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