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. 2013 Feb 4;13(2):1965–1983. doi: 10.3390/s130201965

Figure 3.

Figure 3.

The concept of VTR as illustrated with DEP and ODEP electrodes. (a) For the DEP device, an applied voltage (V1) repels the droplet to X distance away (b) while it only repels the same droplet to Y distance (Y < X)) at the same applied voltage for the ODEP device since a significant voltage drop occurs on the photoconductive layer. (c) If the applied voltage is increased to V2 (>V1), this results in the same repelled distance (X). V1/V2 is defined in this manner for the VTR model in this study.