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A wide variety of applications exist in science and industry for BAT^® transducers. Most remain largely unexplored since the field is relatively new. The examples assembled here serve to show the general capabilities of BAT^® technologies in actual measurements so that you might better judge what is possible for any particular application of interest.  

Index A: In-Air & Reflection Measurements (in these measurements ultrasound does not cross any gas/solid or gas/liquid interfaces)

1. pulse-echo surface imaging of solids
   1. using a focussed reflecting lens
   2. using a micromachined Fresnel zone-plate
2. tomographic imaging in gases
   1. of flow fields
   2. of temperature fields
3. communication with animals & insects
   1. recording the songs of katydids
   2. recording and mimicking the cries of bats

Index B: Non-contact NDT Measurements (in these measurements, ultrasound is generated and received in solid or liquid materials through an intervening air- or gas-layer)

1. thru-transmission C-scans of solid material
   1. 16-ply CFRP plate
   2. 50-ply CFRP plate
   3. bond-line thickness measurement in aluminum lap-joints
   4. thermoplastic composite plate
   5. carbon-fibre composite patch on aluminum
   6. Kevlar-fibre composite panel
   7. Nomex-CFRP panel
2. single-sided C-scans of solid material
   1. bonded riveted aluminum lap-joint

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