Li, J;
Biroun, MH;
Tao, R;
Wang, Y;
Torun, H;
Xu, N;
Rahmati, M;
... Fu, Y; + view all
(2020)
Wide range of droplet jetting angles by thin-film based surface acoustic waves.
Journal of Physics D: Applied Physics
, 53
(35)
, Article 355402. 10.1088/1361-6463/ab8f50.
Preview |
Text
Biroun_Wide range of droplet jetting angles by thin-film based surface acoustic waves_VoR.pdf - Published Version Download (2MB) | Preview |
Abstract
Nozzleless jetting of droplets with different jetting angles is a crucial requirement for 2D and 3D printing/bioprinting applications, and Rayleigh mode surface acoustic waves (SAWs) could be a potential technique for achieving this purpose. Currently, it is critical to vary the jetting angles of liquid droplets induced by SAWs and control the liquid jet directions. Generally, the direction of the liquid jet induced by SAWs generated from a bulk piezoelectric substrate such as LiNbO_{3} is along the theoretical Rayleigh angle of ∼22°. In this study, we designed and manufactured thin-film SAW devices by depositing ZnO films on different substrates (including silicon and aluminium) to realize a wide range of jetting angles from ∼16° to 55° using propagating waves generated from one interdigital transducer. We then systematically investigated different factors affecting the jetting angles, including liquid properties, applied SAW power and SAW device resonant frequency. Finally, we proposed various methods using thin-film SAW devices together with different transducer designs for realizing a wide range of jetting angles within the 3D domain. A nozzleless jetting method is proposed using thin-film based surface acoustic wave devices to achieve a wide range of jetting angles for droplets.
| Type: | Article |
|---|---|
| Title: | Wide range of droplet jetting angles by thin-film based surface acoustic waves |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1361-6463/ab8f50 |
| Publisher version: | https://doi.org/10.1088/1361-6463/ab8f50 |
| Language: | English |
| Additional information: | © 2021 IOP Publishing. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 license (http://creativecommons.org/licenses/by/4.0/). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10137409 |
Archive Staff Only
 |
View Item |
