Robustness evaluation.

ID	L bypass	w gap	Possible problems
1	3000 μm	15 μm	No robust flow rate ratio (violation of Objective 1 possible)
2	4000 μm	15 μm	—
3	5000 μm	15 μm	Bypass length decreases throughput
4	3000 μm	25 μm	Sensitive to high input pressures (violation of Objective 2 possible)
5	4000 μm	25 μm	Sensitive to high input pressures (violation of Objective 2 possible)
6	5000 μm	25 μm	Sensitive to high input pressures (violation of Objective 2 possible), bypass length decreases throughput