A CNC Machine for Stationary Drop Deposition and Coalescence in Liquid–Liquid Systems
The controlled deposition of a dispensed liquid drop onto the surface layer of another liquid is a process that is widely applied in the industry. In most applications, the deposition of stationary drops requires a micrometric translational approach to the surface. Here we describe a computer controlled apparatus that has been constructed to perform precision translation of pendant drops and deposition at liquid and solid surfaces. Different settings of the experimental setup can be easily implemented in the laboratory for use in a variety of other applications, including surface tension measurements and wire bonding in microelectronics. Some experimental tests of partial drop coalescence with a miscible liquid are presented which validate the reliability of the apparatus.
KeywordsVortex Ring Computer Numerical Control Stepper Motor Front Panel Computer Numerical Control Machine
F. P.-P. acknowledges the organizer of the XVII Annual Meeting of the Fluid Dynamics Division (XVII-DDF) of the Mexican Physical Society, with special mention to Anne Cros. This work has been partially supported by CONACyT-EDOMEX-2011-C01-165873 project.
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