Terahertz and infrared spectroscopy of bacterial nanofilaments

0486564 - FZÚ 2018 RIV US eng C - Conference Paper (international conference)
Motovilov, K.A. - Gagkaeva, Z.V. - Kadyrov, L.S. - Zhukova, E.S. - Tobokhova, A.S. - Torgashev, V. I. - Savinov, Maxim - Grinenko, V. - Belyanchikov, M. A. - Sidoruk, K.V. - Dressel, M. - Gorshunov, B. P.
Terahertz and infrared spectroscopy of bacterial nanofilaments.
40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz). New York: IEEE Inc., 2015, s. 1-2, č. článku 7327875. ISBN 978-147998272-1. ISSN 2162-2027.
[40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz 2015). Hong Kong (CN), 23.08.2015-28.08.2015]
Institutional support: RVO:68378271
Keywords : terahertz * infrared * spectroscopy * measurements
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)

By means of terahertz and infrared (THz, 1R) spectroscopies we have measured the dielectric response of nano filaments of electrogenic bacteria Shewanella oneidensis MR-1 in a wide frequency and temperature ranges. THz-far-TR spectra are dominated by absorption due to bound water. At helium temperatures and at sub-THz frequencies a boson-peak-like excitation is detected that is typical for disordered materials. The observation is in agreement with the heat capacity measurements.

Permanent Link: http://hdl.handle.net/11104/0281331