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Experimental and Theoretical Study of Carnosine in THz Range |
| YAN Hai-Tao;WANG Wei-Ning |
| Department of Physics, Capital Normal University, Beijing 100037 |
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| Cite this article: |
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YAN Hai-Tao, WANG Wei-Ning 2005 Chin. Phys. Lett. 22 3179-3181 |
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Abstract The characteristic fingerprints of carnosine from 0.2 to 2.6THz are first measured by terahertz time-domain spectroscopy at room temperature. For the pure carnosine, the refractive index varies between 1.79 and 1.85 with the average value 1.84, while for the carnosine-polyethylene mixture, four absorption peaks centred at 1.37, 1.56, 1.85 and 2.49THz are detected. A comparison of the theoretical predictions using the density functional theory with the experimental results shows satisfactory agreement except somewhat blue shift.
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| Keywords:
78.47.+p
78.20.Bh
42.62.Be
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Published: 01 December 2005
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