TY - GEN
T1 - Single Droplet Jetting Mechanism Based on Parallel Travelling Rayleigh Surface Acoustic Waves
AU - Lei, Yulin
AU - Hu, Hong
AU - Han, Junlong
AU - Huang, Qingyun
AU - Yang, Xiaoqing
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/11
Y1 - 2019/11
N2 - Single droplet jetting is investigated in this paper. Jetting was induced by parallel travelling surface acoustic wave (PTRSAW) devices with straight inter-digital transducers (SIDTs), which were fabricated on a double-sided polished, 0.5 mm-thick, 128° Y-X single-crystal LiNbO3 substrate. The PTRSAW device was mainly composed of two sets of symmetrically distributed SIDTs connected in parallel, which induced two columns of 29.1 MHz PTRSAWs simultaneously. A single droplet jetting phenomenon with 0.8 μL of deionised water was captured by a microscope with a high-speed camera. The experimental results show that this method has the advantages of strong driving ability, simple device structure, instant reaction and high ejection efficiency. A complete mathematical model of droplet jetting based on RSAW technology is established and realised by COMSOL finite element simulation software with a multi-physics interface of laminar two-phase flow and level set. The droplet jetting mechanism was analysed from the liquid volume fraction distribution, pressure and velocity evolution during the jetting process. The characteristics of the jetting droplets is strongly dependent on the SAW streaming force, which is well supported the experimental results.
AB - Single droplet jetting is investigated in this paper. Jetting was induced by parallel travelling surface acoustic wave (PTRSAW) devices with straight inter-digital transducers (SIDTs), which were fabricated on a double-sided polished, 0.5 mm-thick, 128° Y-X single-crystal LiNbO3 substrate. The PTRSAW device was mainly composed of two sets of symmetrically distributed SIDTs connected in parallel, which induced two columns of 29.1 MHz PTRSAWs simultaneously. A single droplet jetting phenomenon with 0.8 μL of deionised water was captured by a microscope with a high-speed camera. The experimental results show that this method has the advantages of strong driving ability, simple device structure, instant reaction and high ejection efficiency. A complete mathematical model of droplet jetting based on RSAW technology is established and realised by COMSOL finite element simulation software with a multi-physics interface of laminar two-phase flow and level set. The droplet jetting mechanism was analysed from the liquid volume fraction distribution, pressure and velocity evolution during the jetting process. The characteristics of the jetting droplets is strongly dependent on the SAW streaming force, which is well supported the experimental results.
KW - Laminar Two-Phase Flow
KW - Level Set
KW - Single droplet jetting
KW - parallel travelling surface acoustic wave (PTRSAW)
UR - https://www.scopus.com/pages/publications/85088322247
U2 - 10.1109/NANOMED49242.2019.9130611
DO - 10.1109/NANOMED49242.2019.9130611
M3 - 会议稿件
AN - SCOPUS:85088322247
T3 - IEEE International Conference on Nano/Molecular Medicine and Engineering, NANOMED
SP - 154
EP - 157
BT - 2019 IEEE 13th International Conference on Nano/Molecular Medicine and Engineering, NANOMED 2019
PB - IEEE Computer Society
T2 - 13th IEEE International Conference on Nano/Molecular Medicine and Engineering, NANOMED 2019
Y2 - 21 November 2019 through 24 November 2019
ER -