The Development of Love Wave-Based Humidity Sensors Incorporating Multiple Layers
Open Access
- 14 April 2015
- Vol. 15 (4), 8615-8623
- https://doi.org/10.3390/s150408615
Abstract
A Love wave humidity sensor is developed by using a multilayer structure consisting of PVA/SiO2 layers on an ST-90°X quartz substrate. The theoretical result shows that the sensor with such a two-layer structure can achieve a higher sensitivity and a smaller loss than the structures with a single polymer layer. Comparative experiments are performed for the sensor incorporating PVA/SiO2 layers and the sensor incorporating a PVA layer. The experimental results agree well with the theoretical predication.Keywords
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