glass micro beads to favor turbulent regimes, and simultaneously
the ULOC design helps to introduce the beads from
the device backside, thus avoiding problematic bead spillover
that can compromise the front side sealing. In this case, the
device was first sealed from the front side and then loaded with
beads from the backside, and finally taped from the backside.
To assess the mixing performance, the devices were flowed
with fluorescein and rhodamine B aqueous solutions, delivered
with two syringe pumps at 30 μl min−1
.