Nonlinear bubble dynamics and light emission in single‐bubble sonoluminescence

1998 ◽  
Vol 103 (5) ◽  
pp. 3046-3046 ◽  
Author(s):  
Felipe Gaitan ◽  
Glynn Holt
Keyword(s):  
Bubble Dynamics ◽  
Light Emission ◽  
Single Bubble ◽  
Single Bubble Sonoluminescence

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

Engevista ◽  
2010 ◽  
Vol 12 (1) ◽  
Author(s):  
Ana Lucia Ferreira de Barros ◽  
Gabriel Watanabe ◽  
Álvaro Luis Martins de Almeida Nogueira ◽  
Rafael Pereira Lopes
Keyword(s):  
Aqueous Medium ◽  
Light Emission ◽  
Piezoelectric Transducers ◽  
Single Bubble ◽  
Ultrasound Wave ◽  
Restricted Domain ◽  
Applied Physics ◽  
Single Bubble Sonoluminescence

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.

INFLUENCE OF SONOCHEMISTRY ON SINGLE-BUBBLE SONOLUMINESCENCE

2005 ◽  
Vol 19 (28n29) ◽  
pp. 1711-1714 ◽  
Author(s):  
LI YUAN ◽  
PING HE
Keyword(s):  
Water Vapor ◽  
Chemical Reactions ◽  
Electrostatic Interactions ◽  
Light Emission ◽  
Single Bubble ◽  
Evaporation And Condensation ◽  
Light Spectra ◽  
Weakly Ionized ◽  
Single Bubble Sonoluminescence ◽  
Low Degrees

Spherical oscillation of an acoustically levitated gas bubble in water was simulated numerically to elucidate the phenomenon of single-bubble sonoluminescence (SBSL). A refined hydro-chemical model was used, which took into account the processes of water vapor evaporation and condensation, mass diffusion, and chemical reactions. The numerical results show significant water vapor dissociations but rather low degrees of ionizations. A widely accepted weakly ionized gas model is then used to compute the light emission. Contrary to earlier predictions without chemical reactions, the present calculated light spectra are generally too small and the pulses are too short to fit to recent experimental results within stable SBSL range. To solve this contradiction, the electrostatic interactions of the ionized gases are included, which is shown to lower the ionization potentials of gas species in the bubble significantly.

scholarly journals Including ionisation in a simple model of single-bubble sonoluminescence

2006 ◽  
Vol 47 (3) ◽  
pp. 333-358 ◽  
Author(s):  
Angus I. S. Munro ◽  
Larry K. Forbes
Keyword(s):  
Bubble Dynamics ◽  
Single Bubble ◽  
Interfacial Heat Transfer ◽  
Van Der Waals Equation ◽  
First Law Of Thermodynamics ◽  
Physical Conditions ◽  
Collapse Characteristics ◽  
Collapse Temperature ◽  
Single Bubble Sonoluminescence ◽  
Chaotic Parameter

AbstractA small gas bubble in a liquid, when driven by intense ultrasound, collapses and emits light in a process called Single-Bubble Sonoluminescence (SBSL). While the dynamics of driven bubbles are well studied, less is known of the physical conditions in the gas or whether it is necessary to include ionisation in simpler studies of bubble dynamics. In this study, a model was derived from Rayleigh-Plesset dynamics, a van der Waals equation of state and the first law of thermodynamics (including interfacial heat transfer and ionisation). Stronger model ionisation reduced the maximum collapse temperature, and altered other collapse characteristics. Chaotic parameter regions are proximal to, but not coincident with, known stable SL regions. Resonant behaviour was only markedly affected by ionisation close to these chaotic regions.

scholarly journals Some light emission features of single bubble sonoluminescence

1993 ◽  
Vol 94 (3) ◽  
pp. 1810-1810
Author(s):  
Sean M. Cordry ◽  
Lawrence A. Crum ◽  
Ronald A. Roy
Keyword(s):  
Light Emission ◽  
Single Bubble ◽  
Single Bubble Sonoluminescence

Bubble Dynamics for Single Bubble Sonoluminescence

2001 ◽  
Vol 70 (10) ◽  
pp. 2909-2917 ◽  
Author(s):  
Ho-Young Kwak ◽  
Joong-Yeob Lee ◽  
Sarng Woo Karng
Keyword(s):  
Bubble Dynamics ◽  
Single Bubble ◽  
Single Bubble Sonoluminescence

scholarly journals Bubble dynamics near the onset of single-bubble sonoluminescence

2004 ◽  
Vol 70 (6) ◽  
Author(s):  
Charles R. Thomas ◽  
Ronald A. Roy ◽  
R. Glynn Holt
Keyword(s):  
Bubble Dynamics ◽  
Single Bubble ◽  
Single Bubble Sonoluminescence
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