**Author details**

László Fábián1 and László Nánai2 \*

1 Institute of Biophysics, Biological Research Centre of the HAS, Szeged, Hungary

2 Department of Experimental Physics, University of Szeged, Szeged, Hungary

\*Address all correspondence to: nanai@physx.u-szeged.hu

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
