A collapsing bubble-induced microinjector: an experimental study

In this study, a new drop-on-demand actuation mechanism, which uses an oscillating bubble as actuator is proposed and its feasibility is investigated via the consideration of two important design parameters, namely, bubble distance to free surface and nozzle dimension. The droplet ejection process c...

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Bibliographic Details
Published in:Experiments in fluids 2009-03, Vol.46 (3), p.419-434
Main Authors: Dadvand, Abdolrahman, Khoo, Boo Cheong, Shervani-Tabar, Mohammad T.
Format: Article
Language:English
Subjects:
Actuation
Actuators
Applied sciences
Bubbles
Collapsing
Droplets
Ejection
Electronics
Engineering
Engineering Fluid Dynamics
Engineering Thermodynamics
Exact sciences and technology
Fluid dynamics
Fluid flow
Fluid- and Aerodynamics
Hardware
Heat and Mass Transfer
Input-output equipment
Research Article
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Description
Summary:In this study, a new drop-on-demand actuation mechanism, which uses an oscillating bubble as actuator is proposed and its feasibility is investigated via the consideration of two important design parameters, namely, bubble distance to free surface and nozzle dimension. The droplet ejection process captured using high-speed photography technique shows that such an actuation mechanism has interesting features and perhaps some advantages over the conventional ones (thermal bubble, piezoelectric, etc.) employed in inkjet printers such as the ejection of a droplet free of satellite droplets and others.
ISSN:0723-4864
1432-1114
DOI:10.1007/s00348-008-0568-3