SUBSTITUTION CIRCUIT OF ELECTROKINETIC CONVERTER ON SHEAR FLOW WITH AN ALTERNATIVE MEASUREMENT SIGNAL

UDC 621.3.011.712

 

Hryniuk Dzmitry Anatol’yevich – PhD (Engineering), Associate Professor, Assistant Professor, the Department of Automation of Production Processes and Electrical Engineering. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: hryniuk@tut.by

Karpovich Dzmitry Anatol’yevich – PhD (Engineering), Associate Professor, Head the Department of Automation of Production Processes and Electrical Engineering. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: karpovich@tut.by

Oliferovich Nadezhda Mikhaylovna – Assistant Lecturer, the Department of Automation of Production Processes and Electrical Engineering. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: oliferovich@belstu.by

Suhorukova Irina Gennad’yevna – Senior Lecturer, the Department of Software Engineering. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: irina_x@rambler.ru

Orobei Igor Olegovich – PhD (Engineering), Associate Professor, Assistant Professor, the Department of Automation of Production Processes and Electrical Engineering. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: orobei@tut.by

Chepurko Matvey Vyacheslavovich – student. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). Е-mail: matvey.chepurko@gmail.com

DOI: https://doi.org/10.52065/2520-6141-2024-278-7.

 

Key words: substitution circuit, electrokinetic potential, alternating current flow. For citation: Hryniuk D. A., Karpovich D. S., Oliferovich N. M., Suhorukova I. G., Orobei I. O., Chepurko M. V. Substitution circuit of electrokinetic converter on shear flow with an alternative measurement signal. Proceedings of BSTU, issue 3, Physics and Mathematic. Informatics, 2024, no. 1 (278), pp. 43–51 (In Russian). DOI: 10.52065/2520-6141-2024-278-7

Abstract

In the article, using the results of previous work, the analysis of the substitution circuit of the electrokinetic potential measuring transducer is expanded to the range of variable values. Since the operation of measuring transducers is based on the contact method of measuring current and voltage in an aqueous solution using an electrode system, the electrochemical processes that occur in the electrode system should be taken into account. It is concluded that it is the electrode system that largely determines the dynamic characteristics of the measuring channel. To reflect the dynamic properties, a typical low-current substitution circuit of the electrode system is adopted. For the considered version of the measuring transducer, complex distributions of motion of charged particles can be observed due to the simultaneous presence of two energy sources. Leakage currents between them can contribute to distortion of the measuring potentials when converting the measuring potentials into electrokinetic potential. It is concluded that leakage currents can affect the limiting frequencies of the operating range of the measuring transducer. For a measuring transducer that will operate at low frequencies, an substitution circuit option for low and infra-low frequencies is proposed The laid structures of measuring transducers are characterized by the complex geometry of the area where leakage currents flow. For the version of the moving element of the converter in the form of a cylinder with a cross section parallel to the cylinder axis, a formula is obtained that relates the parameters of the measuring cell with the equivalent resistance in the equivalent circuit.

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References

  1. Ajdari A. Steady flows in networks of microfluidic channels: building on the analogy with electrical circuits. C. R. Phys, 2004, vol. 5, pp. 539–546.
  2. Wu J. Interactions of electrical fields with fluids: laboratory-on-a-chip applications. IET Nanobiotechnol, 2008, vol. 2 (1), pp. 14–27.
  3. Green N. G., Ramos A., González A., Morgan H., Castellanos A. Fluid flow induced by nonuniform ac electric fields in electrolytes on microelectrodes. I. Experimental measurements. Phys. Rev. E., 2000. vol. 61, issue 4, pp. 4011–4018. 4. Osterle J. F. Electrokinetic Energy Conversion. Journal of Applied Mechanics, 1964, vol. 31 (2), pp. 161–164.
  4. Morrison F. A., Osterle J. F. Electrokinetic Energy Conversion in Ultrafine Capillaries. The Journal of Chemical Physics, 1965, vol. 43, issue 6, pp. 2111–2115.
  5. Chang C.-C., Yang R.-J. Electrokinetic energy conversion in micrometer-length nanofluidic channels. Microfluid. Nanofluidics, 2010, vol. 9, pp. 225–241.
  6. Olthuis W., Schippers B., Eijkel J., van den Berg A. Energy from streaming current and potential. Sensors and Actuators B: Chemical, 2005, vol. 111–112, pp. 385–389.
  7. Morikawa K., Mawatari K., Kato M., Tsukahara T., Kitamori T. Streaming potential/current measurement system for investigation of liquids confined in extended-nanospace. Lab Chip 10, 2010, pp. 871–875.
  8. Saha P., Zenyuk I. V. Electrokinetic Streaming Current Method to Probe Polycrystalline Gold ElectrodeElectrolyte Interface Under Applied Potentials. J. Phys. Chem., 2021, vol. 168, issue 4, pp. 19493–19505.
  9. Gong L., Wu J., Wang L., Cao K. Streaming potential. Streaming potential and electroviscous effects inperiodical pressure-driven microchannel flow. Physics of Fluids, 2008, vol. 20, issue 46, pp. 063603-1–063603-7
  10. Khademi M., Barz D. Structure of the Electrical Double Layer Revisited: Electrode Capacitance in Aqueous Solutions. Langmuir, 2020, vol. 36, issue 16, pp. 4250–4260.
  11. Delgado A., González-Caballero F., Hunter R., Koopal L., Lyklema J. Measurement and interpretation of electrokinetic phenomena. Journal of Colloid and Interface Science, 2007, vol. 309, issue 2, pp. 194–224.
  12. Reppert P. M., Morgan F. D., Lesmes D. P. and Jouniaux L.. Frequency dependent streaming potentials. Journal of Colloid and Interface Science, 2001, vol. 234, issue 1, pp. 194–203.
  13. Hryniuk D. A., Oliferovich N. M., Suhorukova I. G., Egorova A. L., A., Orobei I. O. Karpuk P. O. Substitution circuit of electrokinetic converter on shear flow. Trudy BGTU [Proceedings of BSTU], issue 3, Physics and Mathematic. Informatics, 2023, no. 1 (266), pp. 46–53 (In Russian).
  14. Hryniuk D. A., Kuzmitsky I. F., Orobei I. O. Primary transducer for measuring electrokinetic characteristics. Pribory i tekhnika eksperimenta [Instruments and Experimental Techniques], 1998, no. 3, pp. 124–127 (In Russian).
  15. Hryniuk D. A., Bogoslav N. M., Suhorukova I. G., Orobei I. O., Orobei O. I. Converters of the electrokinetic potential of hydrodispersed systems. Izvestiya TulGU [Izvestiya TulGU], 2011, no. 3, pp. 106–110 (In Russian).
  16. Hryniuk D., Orobei I., Oliferovich N., Suhorukova I. Electrokinetic Converter using AN Unsteady Shift: A Quantitative Model. Electrical, Electronic and Information Sciences (eStream): Open Conference. Vilnius, 2019, pp. 1–4. DOI: 10.1109/eStream.2019.8732159.
  17. Hryniuk D. A., Oliferovich N. M., Orobei I. O., Suhorukova I. G. Mathematical model of formation of measuring signal in electrokinetic converter of variable shift. Trudy BGTU [Proceedings of BSTU], issue 3, Physics and Mathematics. Informatics, 2019, no. 2 (224), pp. 58–65 (In Russian).
  18. Lidorenko N. S., Il'in B. I, Zajdenman I. A. Vvedeniye v molekulyarnuyu elektroniku [Introduction to Molecular Electronics]. Moscow, Vysshaya shkola Publ., 1978. 448 p. (In Russian).
  19. Damaskin B. B. Petriy O. A. Vvedeniye v elektrokhimicheskuyu elektrokinetiku [Introduction to electrochemical electrokinetics]. Ed. by A. N. Frunkin. Moscow, Vysshaya shkola Publ., 1975. 416 p. (In Russian).

15.11.2023