Figure 3.

A typical NR of r = 25 nm with an aspect ratio of 3.1 irradiated by a Gaussian beam of 446 nm in air for Stage III. (a) ${\parallel E\parallel }^2$ distribution in the x–z cross section of NR at y = 0. (b) The optical traction distribution (vector: traction) on the surface of NR, and the morphology of the elastically deformed NR (color: magnitude of normalized displacement), where the inward arrows (blue): pressing traction (pressure) and the outward arrows (red): stretching traction. A dent is caused by the optical traction at the upper central zone of the elongated NR.