A fast passive and planar liquid sample micromixer.
A novel microdevice for passively mixing liquid samples based on surface tension and a geometrical mixing chamber is presented. Due to the laminar flow regime on the microscale, mixing becomes difficult if not impossible. We present a micromixer where a constantly changing time dependent flow pattern inside a two sample liquid plug is created as the plug simply passes through the planar mixer chamber. The device requires no actuation during mixing and is fabricated using a single etch process. The effective mixing of two coloured liquid samples is demonstrated.
Melin
Jessica
J
Microsystem Technology, Department of Signals, Sensors and Systems, Royal Institute of Technology, SE 100 44, Stockholm, Sweden.
Gimenéz
Guillem
G
Roxhed
Niclas
N
van der Wijngaart
Wouter
W
Stemme
Göran
G