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Science Newsletter of the Faculty fo Physics
This is a new bulletin, which, as we hope, will bring fresh, updated information on scientific news, research activities, and related events in the life of our department to our staff members, undegraduate and graduate students, postdocs, collaborators and partners. We greatly hope that this Science Newsletter will help us to find new partners in research and shorten the way from fundamental research to applications and innovations, from our fundamental discoveries to their successful implementations in not too distant future.
XIV National School-Seminar "Wave phenomena in inhomogeneous media"
The conference papers from the School-Seminar «Waves-2014» will be submitted for publishing in the Memoirs of the Faculty of Physics journal.
| Journals » Memoirs of the Faculty of Physics » Issues » 2014 » # 5 |
Practical applications of piezoelectric resonators with lateral electric field
B.D. Zaitsev, A.M. Shikhabudinov, A.A. Teplykh, I.A. Borodina, I.E. Kuznetsova
B.D. Zaitsev,a.m. Shikhabudinov, A.A. Teplykh, I.A. Borodina - 410019, Russia, Saratov, Zelyonaya str., 38, SB IRE by n. Kotel'nikov RASThe paper is devoted to the possibilities of the applications of piezoelectric resonators with lateral electric field for analysis of liquid properties and measurement of microdisplacements. It has been shown that the sensitivity of liquid sensors may be significantly increased by using the module of electrical impedance or admittance on the fixed frequency near the resonance as informative parameter. The change of pointed parameters may achieved 30% and 70% for the change in viscosity from 1 to 1000 mPa×s and for the change in conductivity in range 100 -10000 μS/cm. The second application is based on the fact that electric field of the resonator penetrates outside of piezoelectric plate. The experiments concerning with influence of the gap between free side of resonator and conductive and dielectric plate on the frequencies of series and parallel resonances were carried out. Obtained results have shown the possibility of development of meters of microdisplacements which may be used for permanent monitoring of deformations and crack opening of various constructions, elements of bridges and building, and also for measuring small displacements of two objects respectively each other. It has been demonstrated that the frequency of parallel resonance is unambiguously determined by the width gap in ranges 0 – 0.3 mm and 0 – 2.5 mm for conducting plate and plate of corundum, respectively. The frequency of series resonance does not depend on width of gap but is defined by the temperature. So the frequency of series resonance allows to determine the temperature and to perform the needed corrections.
| URL: | http://uzmu.phys.sunmarket.com/abstract/2014/5/145330 |
| PACS: | 43.20.+g General linear acoustics |
| UDC: | 534.231.3 |
| Цитата: | Б.Д. Зайцев, А.М. Шихабудинов, А.А. Теплых, И.А. Бородина,И.Е. Кузнецова. Практические применения пьезоэлектрических резонаторов с поперечным электрическим полем // Учен. зап. физ. фак-та Моск. ун-та. 2014. № 5. 145330 |