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Experimental setup showing the jet velocity control.
Jet bouncing obtained for various applied voltages (from top to bottom: 0 V, 110 V, and 150 V). Lines are parallel to the jet after bouncing (dashed line: 0 V, dotted line: 110 V, and plain line: 150 V).
Cosines of the wetting angle measured on a millimetric droplet versus rms voltage for an ac frequency of 500 Hz. Plain line is the classical parabolic fit. The saturation phenomenon can be observed above 150 V.
Jet reflection angle as function of the ac voltage (rms value) for a constant frequency of 1 kHz. Blue circles: increasing rms voltage, red squares: decreasing . Plain curves are averaged data as a guide to the eyes.
Jet reflection angle as function of the ac frequency, for a constant rms voltage of 127 V. Both colors are for increasing (green circles) and decreasing (magenta squares) frequencies. Plain curves are averaged data as a guide to the eyes.
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