Flow-type particle detection method

• Main Authors: SHUAI YU, LI HUIJUAN, WU XUDONG, DONG JIAN, ZHANG YU, JIANG JIRUI, WAN MENGZHOU, YAN YUCHUAN, YAO QIN
• Format: Patent
• Language: Chinese; English
• Published: 20.04.2016
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The present invention discloses a flow-type particle detection method, a microfluidic chip is used, a sample adding hole is arranged on the microfluidic chip; a liquid in the sample adding hole flows out from a liquid storage tank and is at least divided into two branches, one branch is used as a sample solution channel, other branches are used as sheath liquid channels for a sheath liquid to flow through; the sample solution channel and the sheath liquid channels come together at a focus point; both ends of a detection channel are provided with at least two electrodes, output terminals of the two electrodes are connected with a differential amplifier circuit; the chip is obliquely or vertically placed, the horizontal position of the sample adding hole is higher than a waste reservoir on the chip; a to-be-tested sample particle suspension is injected form the sample adding hole, a fluid in the chip and a to-be-tested sample start from the sample adding hole under the effect of gravity and an electric field to