Microfluidics control the ballistic energy of thermocavitation liquid jets for needle-free injections
Name
2003.00934.pdf
Description
Accepted version
Size
5.23 MB
Format
Adobe PDF
Checksum (MD5)
d92ecd9c05e62097da7d11468b556e3f
Author(s)
Oyarte Gálvez, Loreto
Fraters, Arjan
Offerhaus, Herman L
Versluis, Michel
Hunter, Ian W
Fernández Rivas, David
Date Issued
2020
Journal
Journal of Applied Physics
Publisher
AIP Publishing
Version
Author's final manuscript
Abstract
Illuminating a water solution with a focused continuous wave laser produces a strong local heating of the liquid that leads to the nucleation of bubbles, also known as thermocavitation. During the growth of the bubble, the surrounding liquid is expelled from the constraining microfluidic channel through a nozzle, creating a jet. The characteristics of the resulting liquid jet were imaged using ultra-fast imaging techniques. Here, we provide a phenomenological description of the jet shapes and velocities and compare them with a boundary integral numerical model. We define the parameter regime, varying jet speed, taper geometry, and liquid volume for optimal printing, injection, and spray applications. These results are important for the design of energy-efficient needle-free jet injectors based on microfluidic thermocavitation.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1063/1.5140264
