The integration of pillars serves various needs. Such structures can be used to maintain particles at a certain area, to allow for self-filling of devices via capillary forces, to increase surface area, to have a sieving effect, or to use these structures for surface functionalization with high surface area regions in a microfluidic device.

Complete Cavities Filled with Pillars

Schematic Drawing of Fluidic 261

Fluidic 261