| 摘要 |
An apparatus for detecting at least one substance present in a fluid flow includes at least one field effect transistor which acts as a measuring sensor, and at least one field effect transistor which acts as a reference element, the field effect transistors each having at least one source electrode, one drain electrode, and one gate electrode. The gate electrode of the field effect transistor which acts as the measuring sensor is sensitive to the at least one substance to be detected, and the gate electrode of the field effect transistor which acts as the reference element is essentially insensitive to the at least one substance to be detected. The source electrode of one of the field effect transistors and the drain electrode of the other of the field effect transistors are connected to one another and to a signal line. A method for detecting at least one substance present in a fluid flow by using the apparatus is also described, a potential of 0 volt being applied to the signal line and the current flowing on the signal line being measured. |
