The difference in terahertz dielectric properties of DNA solutions in water and ethanol

N. Nikolaev; A. Mamrashev; O. Cherkasova

doi:10.1117/12.2580012

17 November 2020 The difference in terahertz dielectric properties of DNA solutions in water and ethanol

N. Nikolaev, A. Mamrashev, O. Cherkasova

Proceedings Volume 11582, Fourth International Conference on Terahertz and Microwave Radiation: Generation, Detection, and Applications; 115820L (2020) https://doi.org/10.1117/12.2580012
Event: Fourth International Conference on Terahertz and Microwave Radiation: Generation, Detection, and Applications, 2020, Tomsk, Russian Federation

Abstract

The dielectric properties of calf thymus DNA solutions in water and ethanol were investigated by means of terahertz time-domain spectroscopy in the range of 0.1–1 THz. Complex dielectric permittivity of solutions was fitted by twocomponent relaxation Debye model with an overdamped oscillator and their parameters were estimated. The difference between the properties of the distilled water and all aqueous solutions is the most pronounced, while the ethanol-water mixture with and without DNA shows minimal changes of about 2%, which is comparable with the experimental accuracy.

Citation Download Citation

N. Nikolaev, A. Mamrashev, and O. Cherkasova "The difference in terahertz dielectric properties of DNA solutions in water and ethanol", Proc. SPIE 11582, Fourth International Conference on Terahertz and Microwave Radiation: Generation, Detection, and Applications, 115820L (17 November 2020); https://doi.org/10.1117/12.2580012

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