A novel ultrasound generator-receiver built on a single-mode optical fiber using a layer of gold nanoparticles has been
designed. The generator takes advantage of the optical and photo-acoustic properties of gold nanoparticles. Thermal and
pressure waves are generated in the nano-particle layer when it is exposed to high intensity, short duration laser
radiation. The laser radiation is applied in an intensity range that creates an instantaneous surface heating of the layer
material that, in turn, drives a pressure wave into the layer. The pressure wave interacts with the layer-substrate interface
to create stress distributions of varying strengths and qualities, depending on the intensity and duration of the initial laser
pulse. The radiation due to laser-induced heating on the nano-particles was investigated using FEA analyses. The
maximum principal stress distribution was investigated by the FEA. Results indicate that the ultrasound generation
elements have almost zero effect on the diaphragm.
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