In the paper, the results of production of Ag inkjet printed interdigital transducers to the acoustic delay line based on Y-cut X-propagation direction of lithium niobate plate for the frequency range from 1 to 14 MHz are presented. conventional transfer matrix method . ? and are the phase velocities of the acoustic waves in electrically free and electrically shorted plates, respectively. Table 3 Calculated and (m/s) /th th align=”center” valign=”middle” style=”border-top:solid thin;border-bottom:solid thin” rowspan=”1″ colspan=”1″ em k /em 2 (%) /th /thead 1A024676.02SH0450627.03S064731.24SH1903410.85A111,4232.26SH216,3271.2 Open in a separate windowpane The geometry of the IDT under study and a online used in the simulation are shown in Number 10. On Kynurenic acid both surfaces of the plate, perfectly matched layers (PMLs) are located to prevent the reflections of excited waves. It was assumed that these absorbing layers were characterized by a quadratic rate of recurrence dependence of the attenuation. It was also Kynurenic acid assumed the plate regions outside of the IDT were mechanically free, i.e., the mechanical stresses were equal to zero. In the area of the contact of the IDT fingers with the plate, the mechanical continuities of the mechanical displacements and tensions between the finger and the plate were used as the mechanical boundary conditions. The excitation of an acoustic wave was modeled by applying a variable electrical potential difference to the IDT fingers (Number 10a). In the model, the IDT was displayed by a set of equipotential rectangles, and the region under the electrodes was divided into the smaller elements. The linear size of these elements was equal to /50 (Number 10b). Open in a separate window Number 10 (a) Schematic model of a delay collection, (b) enlarged mesh fragment. A comparison of the theoretically determined rate of recurrence dependence of parameter S21 for the produced delay line with the experimentally acquired dependence is offered in Number 11. It is possible to see the good coincide between theory and experimental results. Open in a separate window Number 11 Assessment of simulation results with experimental data for produced delay line based on YX LiNbO3 plate. 4. Kynurenic acid Conclusions The electrode structure of the delay line based on YX LiNbO3 for excitation of the plate acoustic waves was created by inkjet printing using metallic nano ink. The thickness of the produced electrodes was equal to 4 m. The lowest electrical resistivity of Ag pieces was found DAP6 to be 0.31 ?m for a sample obtained at a sintering temp of 500 C. This is only about three times the value of the bulk silver. Contact wetting angle was shown to depend on the surface quality of the substrate. Based on acquired results, a rough surface of LiNbO3 wafer was recommended to use for production of electrode structure by means of inkjet printing. The FEM modeling of the excitation of acoustic waves by imprinted electrode structures showed a qualitative and a quantitative agreement with the experimental data. Therefore, standard inkjet printing can replace the complex photolithographic method for generating IDTs. The producing electrode constructions make it Kynurenic acid possible to efficiently excite piezoactive plate acoustic waves with large electromechanical coupling coefficients. Acknowledgments The authors gratefully acknowledge support by Sergey Tkachev and Vitaly P. Kim for help at inkjet printing and LLC AkKo Lab (www.akkolab.com) for providing Ag nanoink. Author Contributions Formal analysis, I.K.; funding acquisition, I.K.; investigation, A.S. and V.A.; strategy, A.S., S.G., L.F., and V.K.; supervision, I.K. and V.K.; validation, V.A., M.A.S., and V.K.; writingOriginal draft, A.S.; writingReview and editing, I.K. and J.K. All authors possess read and agreed to the published version of the manuscript. Funding The work was carried out within the framework of the state job from Ministry of Technology and ADVANCED SCHOOLING #0030-2019-0016 and was partly backed by Russian Basis of PRELIMINARY RESEARCH, tasks #19-07-00145 and #18-57-7802. Andrey Smirnov thanks for monetary support Council of Grants or loans from the elected chief executive from the Russian Federation. (Task # MK-1503.2020.8). Issues appealing The writers declare no turmoil of interest..