: 34-46
Received: August 22, 2023
Revised: September 28, 2023
Accepted: October 10, 2023
Lviv Polytechnic National University

The article presents the development and analysis of the models of various IDT designs and for the acoustophoretic control of microparticles in of lab chip microchannels. The novelty of the work consists in the development of mathematical models for new configurations of IDT, suitable for focusing, sorting and concentrating of heterogeneous microparticles. The developed models are implemented in the COMSOL environment, which allows the designer to use them for the calculation of the specified IDT structures for real acoustofluidic lab-chips. It is shown that increasing the performance and stability of the SAW can be achieved by choosing the material of the piezoelectric substrate with a high coefficient of electromechanical coupling, as well as optimizing the structural and technological parameters of both IDT and microchannel. Various variants of constructions of the IDT were considered and their comparative analysis was carried out.

1.Yuan Gao, Mengren Wu, Yang Lin, Jie Xu, Acoustic Microfluidic Separation Techniques and Bioapplications: A Review, Micromachines 2020, 11, 921; doi:10.3390/mi11100921,

2.Mazalan M.B., Noor A.M., Wahab Y., Yahud S., Zaman W.S.W.K. Current Development in Interdigital Transducer (IDT) Surface Acoustic Wave Devices for Live Cell In Vitro Studies: A Review. Micromachines 2022, 13, 30.

3.Aleksandrova M., Badarov D. Recent Progress in the Topologies of the Surface Acoustic Wave Sensors and the Corresponding Electronic Processing Circuits. Sensors 2022, 22, 4917.

4.Peiran Zhang, Hunter Bachman, Adem Ozcelik, Tony Jun Huang. Acoustic Microfluidics, Annual Review of Analytical Chemistry, Annu. Rev. Anal. Chem. 2020. 13:17–43, 102205

5.Mandal D., Banerjee S. Surface AcousticWave (SAW) Sensors: Physics, Materials, and Applications. Sensors 2022, 22, 820.