Experimental and Theoretical Study of Strong Low-Terahertz Absorption of Thymine

  • W.-D. Zhang
  • A. Bykhovski
  • J. A. Deibel
  • E. R. Brown


The absorption coefficient of a nucleobase-thymine-in powder form was measured with terahertz spectroscopy in both frequency- and time-domain experiments. For frequencies below 3 THz, a strong signature was observed at 1.27 THz. Furthermore, molecular-dynamic simulations were conducted to reveal that the 1.27 THz absorption signature is related to a transverse optical phonon mode. The simulations also indicated that bound water molecules are vital to the vibrational mode.


Nucleobases Spectroscopy Optical phonon Molecular simulation Bound water molecules 


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© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  1. 1.Terahertz Sensors Laboratory, Department of Physics and Electrical EngineeringWright State UniversityDaytonUSA
  2. 2.Department of Electrical and Computer EngineeringNorth Carolina State UniversityRaleighUSA
  3. 3.Department of PhysicsWright State UniversityDaytonUSA

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