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Reference type: Journal
Authors: Mujahid A, Dickert FL
Article Title: Surface Acoustic Wave (SAW) for Chemical Sensing Applications of Recognition Layers.
Publication date: 2017
Journal: Sensors
Volume: 17
Issue: (12)
Page numbers: ArticleNo2716.
DOI: 10.3390/s17122716
Alternative URL: http://www.mdpi.com/1424-8220/17/12/2716/htm

Abstract: Surface acoustic wave (SAW) resonators represent some of the most prominent acoustic devices for chemical sensing applications. As their frequency ranges from several hundred MHz to GHz, therefore they can record remarkably diminutive frequency shifts resulting from exceptionally small mass loadings. Their miniaturized design, high thermal stability and possibility of wireless integration make these devices highly competitive. Owing to these special characteristics, they are widely accepted as smart transducers that can be combined with a variety of recognition layers based on host-guest interactions, metal oxide coatings, carbon nanotubes, graphene sheets, functional polymers and biological receptors. As a result of this, there is a broad spectrum of SAW sensors, i.e., having sensing applications ranging from small gas molecules to large bio-analytes or even whole cell structures. This review shall cover from the fundamentals to modern design developments in SAW devices with respect to interfacial receptor coatings for exemplary sensor applications. The related problems and their possible solutions shall also be covered, with a focus on emerging trends and future opportunities for making SAW as established sensing technology
Template and target information: Review - surface acoustic wave sensors
Author keywords: surface acoustic wave (SAW), shear-horizontal surface acoustic wave (SH-SAW), shear transverse wave (STW), RFID-tags, piezoelectric, chemical sensors, recognition layers

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