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. 2017 Jan 8;17(1):114. doi: 10.3390/s17010114

Figure 7.

Figure 7

Figure 7

The variation of the fundamental frequency with the nondimensional voltage and the nondimensional velocity. (a) The effect of both applied voltage and fluid velocity on the resonant frequency; (b) The effect of voltage on the frequency for different fluid velocities; and (c) The effect of velocity on frequency for different applied voltages.