6D-5 Modeling the Rf Acoustic Behavior of Love-Wave Sensors Loaded with Organic Layers

Abstract

In order to exploit complicated combinations of measurements associated with acoustic devices, we present the results of finite element/boundary element analyses including visco-elastic losses on fluid-loaded love-wave based devices, used as microbalance for biochemical detection and sensing purposes. The P-matrix characteristics of the mode are extracted from these computations to simulate the implemented devices. The corresponding frequency dependent phase shift and acoustic losses are introduced in the P-matrix model, allowing for an accurate prediction of insertion losses and phase sensitivity of our love-wave delay lines. Comparison between theory and experiments shows that we are capable to accurately predict the influence of viscosity on the insertion losses of the love-wave microbalance.