Figure 4
From: Negative Optical Torque
The contribution (in absolute value) to the torque by individual partial wave azimuthal channels versus kR.
(a)–(b) three-fold and (c)–(d) six-fold rotationally symmetric dielectric structures (εr = 2.4649, a = 0.49 μm). The incident field is a left circularly polarized plane wave (intensity is 1 mW/μm2). R = 0.58 μm for (a) and R = 1 μm for (b)–(d). The oscillations are due to spatial retardation.
