Pelleti Tharun Kumar Reddy

Main Article Content


The main of this research is to solve the problems of the mixing of fluids in microchannels. The aim is to improve the mixing efficiency of the microchannel by employing the piezoelectric actuator. The objectives of the project are to, producing ZnO (Zinc Oxide) thin films, preparing the microchannel with desired dimensions and examining the mixing efficiency of the microchannel by employing the piezoelectric actuator. The ZnO nanoparticles were produced by the coprecipitation method, and the purity and phase were checked by using the XRD method, the ZnO thin films were produced by the Ultrasonic Spray pyrolysis, the thickness of the thin films was determined by using the Eddy current method, the mixing efficiency was measured by powering the piezoelectric actuator by AC source. The size of the nanoparticles is 53.88 nm, The thickness of the ZnO-coated copper thin films is 102 µm, the mixing efficiency can be increased up to 93.47% with the help of an active source of energy Piezoelectric actuator. The mixing efficiency is further increased by increasing the length of the microchannel, increasing the cross-sectional area of the microchannel, in the maximum voltage kept at 5 V because of the limitation of the piezoelectric actuator.

Keywords: Microfluidic Mixer, Piezoelectric Actuator, Piezoelectric Effect, ZnO nanoparticles, ZnO thin-films.


[1] S. Sagadevan, Recent Trends on Nanostructures Based Solar Energy Applications: A Review, Rev. Adv. Mater. Sci, Vol. 34, 2013, pp. 44-61.
[2] Y. Zhang, J. Lu, M. R. Hoffmann, Q. Wang, Y. Cong, Q. Wang, H. Jin, Synthesis of g-C3N4/Bi2O3/TiO2 Composite Nanotubes: Enhanced Activity Under Visible Light Irradiation and Improved Photoelectrochemical Activity, RSC Adv, Vol. 5, 2015, pp. 48983-48991.
[3] S. Hernandez, D. Hidalgo, A. Sacco, A. Chiodoni, A. Lamberti, V. Cauda, E. Tresso, G. Saracco, Comparison of Photocatalytic and Transport Properties of TiO2 and ZnO Nanostructures for Solar-driven Water Splitting, Phys. Chem, Vol. 17, pp. 2015, pp. 7775-7786.
[4] W. Wang, G. Li, D. Xia, T. An, H. Zhao, P. K. Wong, Photocatalytic Nanomaterials for Solar-driven Bacterial Inactivation: Recent Progress and Challenges, Sci.Nano, Vol. 4, 2017, pp. 782-799.
[5] K. M. Lee, C.W. Lai, K. S. Ngai, J. C. Juan, Recent Developments of Zinc Oxide Based Photocatalyist in Water Treatment Technology: A Review, Water Res, Vol. 88, 2016, pp. 428-448, https//
[6] S. G. Kumar, K. S. R. Koteswara Rao, Zinc Oxide Based Photocatalyist: Tailoring Surface Bulk Structure and Related Interfacial Charge Carrier Dynamics for Better Environmental Applications, RSC Adv, Vol. 5, 2015,
pp. 3306-3351.
[7] A. Sadollahkhani, I. Kazeminezhad, J. Lu, O. Nur, L. Hultman, M. Willander, Synthesis, Structural Characterization and Photocatalytic Application of ZnO@ZnS Core Shell Nanoparticles, RSC Adv, Vol. 4, 2014, pp. 36940-36950.
[8] M. Willander, M. Q. Israr, J. R. Sadaf, O. Nur, Progress on One-dimensional Zinc Oxide Nanomaterials Based Photonic Devices, Nanophononics, Vol. 1, No. 1, 2012, pp. 99-115, https//
[9] M. Willander, O. Nur, J. R. Sadaf, M. I. Gadir, S. Zaman, A. Zainelabdin, N. Bano, I. Hussain, Luminescence from Zinc Oxide Nanostructures and Polymers and Their Hybrid Devices, Materials, Vol. 3, No. 4, 2010,
pp. 2643-2667, https//