Drobe, H.H.DrobeHeidenreich, T.T.HeidenreichKößlinger, C.C.KößlingerMayer, A.A.MayerRuge, I.I.Ruge2022-03-082022-03-081991https://publica.fraunhofer.de/handle/publica/319083A considerable demand for precision liquid-sensors designed to detect a variety of substances is obvious in the supervision of physiological procedures, biotechnological processes and in environmental analytics. Microweighing with SAW-devices is a highly promising sensing principle with respect to the sensitivities that can be obtained. Mass loading of a few pg of a substance on the sensor surface can still be detected significantly using specially designed SAW-devices. Sensing system based on a HPSW-delay line is presented. It renders the on-line detection of mass loading even in liquid media. The successful use of HPSW-modes for SAW-sensors marks a major breakthrough in the application of SAW-sensors for measurements in liquids.dechemischer SensorFlüssigkeitssensorconference paper