Experimental and Theoretical Study of the Terahertz Absorption Spectra of Crystalline Saccharides
- Resource Type
- Conference
- Authors
- Zhang, Tongjun; Cai, Jinhui; Yan, Zhigang; Zhou, Zekui
- Source
- 2006 Joint 31st International Conference on Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006. IRMMW-THz 2006. Joint 31st International Conference on. :504-504 Sep, 2006
- Subject
- Fields, Waves and Electromagnetics
Components, Circuits, Devices and Systems
Crystallization
Frequency
Density functional theory
Sugar
Time domain analysis
Proteins
Spectroscopy
Electromagnetic wave absorption
Biology
Medical services
- Language
- ISSN
- 2162-2027
2162-2035
Terahertz time-domain spectroscopy has been used to measure the full dielectric function of polycrystalline D-glucose and D-mannose. A number of well-resolved absorption peaks were observed in the frequency range 0.2-3.0 THz, which are interpreted as originating from inter-and intra-molecular vibrational modes. In parallel with the experimental study, density functional theory was applied to obtain structure and vibrational frequencies of the saccharides. The calculated results are in reasonable agreement with the experimental data. The comparison between experimental and theoretical study shows that far-infrared absorption features are highly sensitive to the structure and spatial arrangement of molecules.