Multiplexer
The multiplexer is the VLV-based microfluidic component used to connect a given input of liquid to a given output. It consists of two sets of parallel channels, located on opposite sides of the base, with the second set of channels running perpendicular to the first set. By operating the VLV, a series of connections is created between specific channels on opposite sides of the base, literally laying down a path for the liquid to follow.
The multiplexer can be thought of as a subway network on two levels, with trains on a first underground level running between east and west, and trains on a second underground level running between north and south. For example, passengers wanting to reach a station which is south-east of their current location would take a southbound train for an appropriate number of stops, get off, and then – one floor below – take an eastbound train to their destination.