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. 2018 Apr 13;8:5945. doi: 10.1038/s41598-018-24343-w

Figure 2.

Figure 2

The relation between angular velocity and frequency of electric fields at field voltage of 2 Vpp with (red line) and without (blue line) a laser irradiation (Positive velocity means counter-field; negative velocity means co-field). Insets: (top left) Images of circular active motion in the counter-field direction. The images are accumulated for 10 frames and the time interval is 0.1 s. (bottom left) Images of circular active motion in the co-field direction. The images are accumulated for 6 frames and the time interval is 0.2 s. (top right) Image of EROT of a Janus particle which is facing with gold side up (up-down orientation).