Experimental Demonstration of Sorting of Chiral Particles (IMAGE)
Caption
a, b Chiral particles with right hand (κ > 0) (a) and left hand (κ < 0) (b) experience lateral forces to the left (R1, R2 and R3) and right (L1 and L2), respectively. Particles with weak chiralities (labelled F1, F2 and F3) could be affected by the background flow and move with almost the same velocities. Different particles have different velocities due to the different sizes and slightly different chiralities. The laser power used was 1.4 W. The scale bars in a and b equal 100 μm. c Measured velocities of particles with different chiralities under different laser powers. d Measured maximum optical lateral force in each video sequence with varying particle size and polarization of light. The lateral forces have opposite signs under s- and p-polarized beams when the chirality is the same.
Credit
by Cheng-Wei Qiu
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