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Microwave-induced water flows in microsystems
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View: Figures


Image of FIG. 1.
FIG. 1.

Scheme of the experimental setup for the observation of microwave induced flows. Fluid flow is generated on top of two coplanar microelectrodes. The device is connected to a microwave generator through a transmission line.

Image of FIG. 2.
FIG. 2.

(a) Velocity measured at a given point (, ) as a function of frequency for two water solutions (incident microwave power is 0.16 W). (b) Estimated voltages at electrodes as functions of frequency for generation of the observed fluid velocities by buoyancy and expected voltage at the electrodes from the circuit analysis [, , and ] and are computed with COMSOLMULTIPHYSICS for the actual device. is estimated from analytical solution of the induction per unit length for two infinitely long strips.

Image of FIG. 3.
FIG. 3.

Velocity as a function of estimated dissipated power in the device for different frequencies and water solutions: (a) channel with height equal to and (b) to . Continuous lines: computed velocity as a function of dissipated power for .

Image of FIG. 4.
FIG. 4.

Particle paths and computed velocities at a plane high from electrode level. Channel with heights of (up) and with (down).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Microwave-induced water flows in microsystems