MICROFLUIDIC DEVICE FOR PARTICLE ENUMERATION

摘要

This invention relates to a microfluidic device for conducting automatic particle enumeration. The microfluidic device comprises an inlet, a microchannel, an outlet, multiple branched channels and a sensing channel. The microchannel has a plurality of loops. Each of the branched channels interconnects at least two adjacent loops. The particles in the fluid migrate toward an inner channel wall of the microchannel when the particles pass through the sensing channel. The sensing channel includes a staircase-shaped slit pattern for optical particle enumeration of the particles passing through the sensing channel.

主权项

1. A microfluidic device for rapid particle enumeration, comprising;
an inlet for receiving a fluid sample, wherein the fluid sample comprises a plurality of first particles; a microchannel having a plurality of loops to allow the fluid sample to travel from the inlet to the loops of the microchannel; multiple branched channels, each of the branched channels interconnecting at least two adjacent loops of the plurality of loops; and a sensing channel, the sensing channel including a slit pattern for optical particle enumeration of the first particles passing through the sensing channel from the microchannel; wherein when the first particles enter the sensing channel, the first particles migrate toward an inner channel wall of the sensing channel and are optically counted.