Fig. 1. Schematic of the experimental setup.

Fig. 2. RDE signal of scattered light under different conditions.

Fig. 3. Experimental spiral harmonic distribution of clover, four-leaf clover, and six-leaf clover.

Fig. 4. Experimental results of patterns with same symmetry but different shape: (a) clover and equilateral triangle; (b) four-leaf clover and square.

Fig. 5. Experimental results of triangles with different angles.

Fig. 6. (a) Experimental results of binary clover with different sizes and clover with grayscale; (b) experimental results of clover at different rotating speeds.