Optical Functions of Methanol and Ethanol in Wide Spectral Range
The motivation of this paper is to determinate the precise complex refractive indices dispersion of ethanol, methanol, and their solutions in the wide spectral range from 8 to 40 000 cm−1 (wavelength range from 250 nm to 1.25 mm) in coupling to biosensors applications (body liquids analyses, tissue ethanol solutions testing, etc.) because a specification of the complex optical functions consistent with Kramers–Kronig dispersion relations in the whole mentioned spectral range was still missing. A general method combining UV/visible/near-infrared spectroscopy and Mueller matrix ellipsometry, Fourier transform infrared spectroscopy (FTIR), infrared attenuated total reflection (ATR) spectroscopy, and terahertz time-domain spectroscopy (THz-TDS) is proposed. The experimental data are modeled using a dielectric function parametrization based on the Brendel–Bormann oscillators.
KeywordsRefractive indices of liquids Terahertz spectroscopy ATR Infrared spectroscopy Ethanol Methanol
This work was partially supported by the Czech Science Foundation (grant #15-21547S), by the Ministry of Education, Youth and Sports: by the National Program of Sustainability (NPU II) project IT4Innovations excellence in science—LQ1602, and “Regional Materials Science and Technology Centre—Feasibility Program” (# LO1203).
- 2.Vance, S., Zeidan, E., Henrich, V.C., Sandros, M.G.: Comparative analysis of human growth hormone in serum using SPRi, nano-SPRi and ELISA assays. Jove-J. Vis. Exp. 107, e53508 (2016)Google Scholar
- 4.Klein, A.K., Pan, Y., Balocco, C., Zeze, D., Gallant, A.J.: Micro fabricated spoof surface plasmon polariton structures for THz applications. In: 2015 40th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz). IEEE, pp. 1–2 (2015)Google Scholar
- 14.Theiss, W.: http://www.mtheiss.com/docs/scout2/?brendel.htmSCOUT technical manual. http://www.mtheiss.com/docs/scout2/?brendel.htm
- 18.http://www.refractometer.pl/refraction-datasheet-basicRefractive index of some selected substances, refractometer.pl. http://www.refractometer.pl/refraction-datasheet-basic