Optical Functions of Methanol and Ethanol in Wide Spectral Range

  • Michal LesňákEmail author
  • Kamil Postava
  • František Staněk
  • Jaromír Pištora
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 526)


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.


Refractive 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).


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© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Michal Lesňák
    • 1
    • 2
    Email author
  • Kamil Postava
    • 2
  • František Staněk
    • 1
  • Jaromír Pištora
    • 2
  1. 1.Institute of PhysicsVSB-Technical University of OstravaOstrava-PorubaCzech Republic
  2. 2.Nanotechnology Centre, VSB-Technical University of OstravaOstrava-PorubaCzech Republic

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