Microfluid chips that comprise one or more microscale and/or mesoscale condenser arrays, which can facilitate particle purification and/or fractionation, are described herein. In one embodiment, an apparatus can comprise a layer of a microfluidic chip. The layer can comprise an inlet that can receive fluid,an outlet that can output a purified version of the fluid, and a condenser array coupled between and in fluid communication with the inlet and the outlet. The condenser array can comprise a plurality of pillars arranged in a plurality of columns. Also, a pillar gap sized to facilitate a throughput rate of the fluid of greater than or equal to about 1.0 nanoliter per hour can be located between a first pillar of the plurality of pillars in a first column of the plurality of columns and a second pillar of the plurality of pillars in the first column.
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