Fig. 1. Schematic diagram of the APPP setup.

Fig. 2. Effects of the He flow rate on the influence function.

Fig. 3. Profile of the influence function in the position dwell mode: (a) a three-dimensional graph, (b) the cross-section plot.

Fig. 4. Profile of the influence function in the velocity mode.

Fig. 5. Removal rate versus velocity.

Fig. 6. Schematic of the optimal calculation condition.

Fig. 7. Designed surface shape of the CPP.

Fig. 8. Cumulative probability of velocity: (a) the velocity mode, (b) the position dwell mode.

Fig. 9. Schematic diagram of fabricating the CPP.

Fig. 10. Photograph of the APPP setup during processing the CPP.

Fig. 11. Actual surface shape with the position dwell mode.

Fig. 12. Actual surface shape with the velocity mode.