ULTRASOUND BEHAVIOR OF DIFFERENT CERAMIC PIEZOELEC-TRIC TRANSDUCERS APPLIED TO SONOLUMINESCENCE

Ana Lucia Ferreira de Barros, Gabriel Watanabe, Álvaro Luis Martins de Almeida Nogueira, Rafael Pereira Lopes

Resumo


Single-bubble sonoluminescence (SBSL) is a light-emission event from a stably oscillating bubble trapped at the pressure anti-node of a standing ultrasound wave, a phenomenon that has been studied intensively for a decade [1]. Using ceramic piezoelectric transducers PZT, we are able to irradiate a liquid inside a resonator flask by means of an ultrasound wave, and we eventually capture a bubble inside a restricted domain in the aqueous medium. The trapped bubble will expand and collapse at an accelerated rate, emitting light. To capture the bubble we perform some experiments using differently sized and shaped piezoelectric transducers, and we manage to verify their capacitance and impedance behavior in our sonoluminescence circuit. Our experiments were performed at Laboratory of Experimental and Applied Physics (LaFEA) at CEFET-RJ.


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DOI: https://doi.org/10.22409/engevista.v12i1.244

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