Marangoni instability – TechConnect Briefs

Modeling Drop Generation at the Microscale

Hanchak M.S., Furlani E.P., Eastman Kodak Company, US

In this presentation a numerical model is described for predicting drop generation from microscale liquid jets of Newtonian fluid. The model uses a one-dimensional slender-jet approximation to obtain the equations of motion for the free-surface [...]

Integrated Thermal Modulation and Deflection of Viscous Microjets with Applications to Continuous Inkjet Printing

Furlani E.P., Ng K.C., Lopez A.G., Anagnostopoulos C., Eastman Kodak, US

We present a novel CMOS/MEMS microfluidic device that enables the controlled production and redirection of streams of picoliter-sized droplets at frequency rates in the hundreds of kilohertz range. This device consists of a pressurized reservoir [...]

Thermally Induced Marangoni Instability of Liquid Microjets with Application to Continuous Inkjet Printing

Furlani E.P., Price B.G., Hawkins G., Lopez A.G., Eastman Kodak Co., US

Liquid microjets are inherently unstable and can be broken into droplets in a controllable fashion via thermal modulation of surface tension. Such modulation can be achieved using CMOS/MEMS technology by integrating resistive heating elements around [...]