Acoustic fields 1 Acoustic sources 1 Acoustic waveguides 1 Acoustics 1 Coupling efficiency 1 Current sensing Equipment Design 1 Fully integrated 1 High sensitivity 1 Materials Testing 1 Non destructive 1 Quartz 1 Signal to noise ratio 1 Structural health monitoring 1 Structural sensing 1 Transducers 1 Waveguides 1 acoustics 1 devices 1 equipment design 1 materials testing 1 silicon dioxide 1 transducer 1