| 摘要 |
The invention relates to a device for detecting at least one substance. The device for detecting at least one substance (81) comprises a resonator (1) provided with a chemically sensitive layer (8), on the side thereof facing away from the carrier (10), for the selective binding of a substance (81) to be detected. An acoustic mirror (4, 41, 42) is arranged between the carrier (10) and the resonator (1). The acoustic mirror (4) represents a band elimination filter having two narrowly adjacent blocking frequencies (fRS1, fRS2; fRS3, fRS4), such that the device can oscillate in two resonance frequencies (fR1, fR2). The mass connection of the substance (81) and the temperature change can be determined by calculation from the measured resonance frequencies (fR1, fR2). |
