Love Wave acoustic sensors behavior in complex liquids. Multiparameter
sensing using acoustic and electrical signals
Abstract
Love wave (LW) acoustic sensors are promising devices for biochemical
detection in the liquid media. However, their application for in-situ
biochemical detection especially in the turbid liquid medium is not yet
explored. Turbid liquids are complex in nature with both mechanical and
electrical characteristics. These characteristics could be reliably
estimated with LW acoustic sensor response, where some of the dedicated
sensors based on electrochemistry or optical principle show limitations.
This paper presents experimental responses of LW acoustic sensor to
turbid liquids based on Formazin solutions and its comparison to the
spectrophotometer response. Analysis of sensorâ\euro™s
electro-acoustic response is used to better characterize the sensor
performance with turbid liquids. Further, this paper demonstrates the
feasibility of LW acoustic sensor as a multiparameter sensing unit by
estimating the influence of electro-mechanical parameters of the turbid
liquids on the overall response of the sensor.