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. 2021 Jan 13;7(3):eabd9551. doi: 10.1126/sciadv.abd9551

Fig. 2. Transportation and manipulation of a single r-ND along a nanofiber using the GR laser.

Fig. 2

(A) Time-sequential images of the r-ND observed at 2-s intervals. The GR laser is incident from the left end (70 mW). A single r-ND is trapped and transported along the nanofiber at the velocity of 110 μm/s. (B) Time-sequential images of the r-ND observed at 4-s interval. The GR laser is incident from the left end of a nanofiber and the NIR laser from the opposite end. The power of the NIR laser is fixed at 250 mW, and the GR laser power is changed from 70 to 0 mW. At approximately 8 s, the optical forces exerted by the two lasers balance each other. The white bar indicates a scale of 100 μm. The dotted line represents the nanofiber position.