Peer-reviewed by 2 reviewers with median rating of 15/20. Review process was triple-blinded.
Round 1 (14.5/20)
Round 2 (15/20)
Conceptual advance and Impact8.5
Recommended for publication.
Results & Discussion
Is there any dependence to the channel height, since the largest PS particles almost approach half of the channel height?
The authors should address the discrepancy with Park et al.
Show evidence of orifice crowding.
Conceptual advance and Impact6.5
The author has discovered an interesting phenomenon that the hydrodynamic focusing also depend on the concentration of particle and size of the orifice.
It is recommended that a simulation could be provided to demonstrate how the fluid dynamics change when the parameter of the experimental setup changes.