SENSOR FOR DETECTING SUBSTANCE IN LIQUID AND DEVICE FOR DETECTING SUBSTANCE IN LIQUID EMPLOYING SAME

摘要

There is provided a sensor for detecting an analyte in liquid utilizing a surface acoustic wave element, which enables to highly accurately measure the analyte in a small amount of a liquid. There is also provided a device for detecting an analyte in liquid using the sensor. A sensor for detecting an analyte in liquid (1) includes a base substrate (2) provided with openings (2a and 2b) and electrode lands on one surface thereof and SAW elements (6 and 7) each provided with a sensing portion having at least one IDT electrode on one side. The SAW elements (6 and 7) are mounted on the base substrate (2) with bump electrodes by a flip-chip bonding method so that the sensing portions of the SAW elements (6 and 7) face the openings (2a and 2b) of the base substrate (2). At least one of the sensing portions is coated with a reaction membrane (13) which binds to an analyte.