The application of acoustic wave microsensors for mass sensing will be reviewed with focus on the quartz crystal microbalance
(QCM) and surface acoustic wave (SAW) devices. The use of QCM and SAW devices in chemical sensing as well as in the determination
of solid and liquid properties will be described. In chemical sensing, it is unlikely that a single sensor with a single coating
will display a selective and reversible response to a given analyte in a mixture. Alternative strategies such as the use of
sensor arrays and the use of sampling devices can be used to improve performance. QCM sensors (QCMs) will oscillate under
liquids; their use in under-liquid sensing will be discussed.
Authors:László Hajdu, Balázs Dávid, and Miklós Krész
1 Introduction The relevance of the Internet of Things (IoT) and sensors is becoming increasingly important in real-world applications nowadays, as the information they provide can be analyzed and used in several different areas. For this reason, it
Authors:M. Radecka, A. Kusior, A. Lacz, A. Trenczek-Zajac, B. Lyson-Sypien, and K. Zakrzewska
morphology and aggregation as well as nanomaterial agglomeration [ 2 ] that play an important role in decreasing operating temperature and improving sensor selectivity.
Detection of ammonia (NH 3 ), gas, extremely dangerous to human health
, multiple data sources are required. The currently available solutions use various sensors. Certain measurement methods apply visual markers attached to the body or use wearable pressure-sensitive sensors or measure the muscle work [ 3 ], [ 4 ]. The recorded
topography, and collision avoidance for modern vehicle navigations systems. Ultrasonic sensors, in general, are used as cheap and accurate sensors for non-contact measurements of distance in many fields of research and applications. Due to their low price
Authors:Boubekeur Djail, Walid Khaled Hidouci, and Malik Loudini
1 Introduction A wireless sensors network is a network with nodes consisting of sensors devices, which communicate with wireless interfaces [ 1 ]. Sensors are characterized by limited capacities of memorization and computing, and are alimented by