Abstract
A biomedical microfluidic chip for fast detection utilizes a magnetic bead to grip a certain substance in a specimen and to perform florescence labeling and detection on the substance; stacked in the order of bottom to top, the biomedical microfluidic chip comprises a substrate layer, a flow channel layer, and a pump layer. Covering on the substrate layer is an electromagnetic coil wound by metal wires which generates a magnetic force to attract magnetic bead when electricity is applied. In addition to the electromagnetic coil design of the substrate layer, this invention also has a valve mechanism and a pump mechanism on the pump layer, by which the biomedical microfluidic chip can utilize the magnetic bead to capture the substance under test and graft an antibody thereto; in addition, the flow channel layer and the structural design of micro flow passage of the pump layer can also be used for separation, purification, and concentration for performing the objective of optical detection.