Patent ID: 11879819
Assignee: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS
Field: Measurement (Instruments)
Classification: CPC G  B  F | IPC B  F  G

Claim 0:
1. A fractionator for a particulate matter (PM) monitor, comprising:
a body defining a vertical air inlet to receive a stream of air from outside the body, the stream of air comprising particles of varying sizes;
a plurality of microfluidic channels within the body, wherein inertial forces within the microfluidic channels are configured to separate the particles by size;
a horizontal air outlet in fluid communication with at least one of the plurality of microfluidic channels for particles having a size below a threshold size; and
a vertical air outlet in fluid communication with at least one of the plurality of microfluidic channels for particles having a size above a threshold size;, wherein the fractionator comprises a first wafer and a second wafer bonded together, wherein each wafer comprises a device layer, a buried oxide (BOX) layer, and a handle layer.