Fig. 1. (a) Geometric scheme of a single metallic rod and plate, (b) the reflectivity with x- or y-polarized incidence, (c) the PCR and phase difference between the x and y component of the reflecting wave when incident on a single 45° rotated metallic rod and plate structure, and (d) the PCRs with different parameters of the rod.

Fig. 2. (a) Geometric scheme of the reflection manipulation; the reflections with different frequencies, (b) 24, (c) 28.3, (d) and 32 THz.

Fig. 3. Negative reflection with the incident angle being 5.7° at 28.3 THz. The incident wave is marked by the red arrow.

Fig. 4. (a) Geometric scheme; the focusing with different frequencies (b) 24, (c) 28.3, and (d) 32 THz. (e) The amplitude of Ex at 28.3 THz.

Fig. 5. (a) Geometric scheme; collimations with different frequencies (b) 24, (c) 28.3, and (d) 32 THz.