595646.fig.001a
(a)
595646.fig.001b
(b)
595646.fig.001c
(c)
595646.fig.001d
(d)
595646.fig.001e
(e)
Figure 1: (Color online) Optical guiding with a symmetric slitgroove along a linear trajectory. (a) Schematic of the silver slitgroove. 𝑊 = 8 0  nm, 𝐺 = 𝑔 = 4 1 5  nm, 𝑑 = 4 0  nm, and 𝐻 = 3 0 0  nm. The film is immersed in water ( 𝑛 = 1 . 3 3 ). The structure is extended in the 𝑍 -direction. The optimal geometry for beaming was determined by numerical simulations. (b) Electric field intensity obtained from a numerical simulation. (c) Optical force for a dielectric particle ( 𝐷 = 1 μm, 𝑛 = 1 . 5 9 ) located at 𝑋 = 1 2 μm. The force magnitude is normalized to the transmitted power (through the slit) of 10 mW/μm in the 𝑍 -direction. (d) Optical force 𝐹 𝑋 as a function of the particle diameter. The particle is located at 𝑋 = 1 2 μm, 𝑌 = 0 μm. (e) Optical force vector map.