Abstract

Terahertz (THz) properties of seventeen types of wood typically growing within the European area are investigated. The samples include both coniferous and deciduous timbers. The determined properties can be useful for further THz studies on samples consisting completely or partially of wood, for example, art objects. Especially in the field of art conservation, THz spectroscopy is an excellent non-destructive evaluation method, which shows considerable analysis potential.

Highlights

  • Terahertz (THz) properties of seventeen types of wood typically growing within the European area are investigated

  • Damage or moisture has been examined on lumber [1, 2], and the possibility of tree ring and wood density analysis has already been demonstrated [3,4,5,6]

  • The samples selected are typical timber materials of trees growing within the European area

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Summary

Introduction

Terahertz (THz) properties of seventeen types of wood typically growing within the European area are investigated. Germany Journal of Infrared, Millimeter, and Terahertz Waves (2019) 40:770–774 of the refractive index and the absorption coefficient in the THz range of the involved materials is important. We study the THz properties of different wood specimens in the THz range using THz time-domain spectroscopy in transmission geometry.

Results
Conclusion
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