A technique for measuring the permittivity coefficient of liquids based on the dependence of a piezoelectric resonator on ambient conditions is suggested. A model of a resonator, which allowed calculating its resonance frequency with the permittivity of the ambient liquid, is presented. Theoretical calculations are in good agreement with the experimental data. The dependence of the permittivity coefficient of an “ethyl alcohol-water” system on the concentration of components is determined with the given technique.
Chair of Radiophysics, Moscow State University, Moscow, 119991, Russia
Science News of the Faculty of Physics, Lomonosov Moscow State University
This new information publication, which is intended to convey to the staff, students and graduate students, faculty colleagues and partners of the main achievements of scientists and scientific information on the events in the life of university physicists.