MULTIPLE MODES ACOUSTIC WAVE SENSOR

摘要

A multiple mode sensing system is described, which can be configured from an acoustic wave sensor that includes a plurality of sensing components for monitoring a chemical species. The plurality of sensing components can be disposed within a cavity formed from a plurality of walls of said acoustic wave sensor, such that each sensing component is coated with a differing sensing film. The multiple modes sensing system also includes a plurality of oscillators associated with sensing components, wherein each sensing component is generally located in a feedback loop with identical oscillators to thereby provide a multiple modes acoustic wave sensor that provides multiple modes frequency outputs for the detection and desorption of a chemical species.