Measurements of the transient response of single‐bubble sonoluminescence subject to an abrupt change in the drive pressure amplitude

1997 ◽  
Vol 102 (5) ◽  
pp. 3185-3185
Author(s):  
Thomas J. Matula ◽  
Lawrence A. Crum
Keyword(s):  
Transient Response ◽  
Abrupt Change ◽  
Single Bubble ◽  
Pressure Amplitude ◽  
Single Bubble Sonoluminescence

A Glycerol Drop in Water Boosts Single-Bubble Sonoluminescence

2003 ◽  
Vol 42 (Part 1, No. 2A) ◽  
pp. 716-720 ◽  
Author(s):  
Naser Harba ◽  
Shigeo Hayashi
Keyword(s):  
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.

Dependence of single-bubble sonoluminescence on ambient pressure

Ultrasonics ◽  
2000 ◽  
Vol 38 (1-8) ◽  
pp. 566-569 ◽  
Author(s):  
M. Dan ◽  
J.D.N. Cheeke ◽  
L. Kondic
Keyword(s):  
Ambient Pressure ◽  
Single Bubble ◽  
Single Bubble Sonoluminescence

scholarly journals Tropic Responses of Phycomyces Sporangiophores to Gravitational and Centrifugal Stimuli

1961 ◽  
Vol 45 (1) ◽  
pp. 23-38 ◽  
Author(s):  
David S. Dennison
Keyword(s):  
Centrifugal Force ◽  
Transient Response ◽  
Abrupt Change ◽  
Active Phase ◽  
Light Sensitivity ◽  
Centrifugal Forces ◽  
Low Speed ◽  
Dense Fluid ◽  
Sensory Mechanism

A low-speed centrifuge was used to study the tropic responses of Phycomyces sporangiophores in darkness to the stimulus of combined gravitational and centrifugal forces. If this stimulus is constant the response is a relatively slow tropic reaction, which persists for up to 12 hours. The response is accelerated by increasing the magnitude of the gravitational-centrifugal force. A wholly different tropic response, the transient response, is elicited by an abrupt change in the gravitational-centrifugal stimulus. The transient response has a duration of only about 6 min. but is characterized by a high bending speed (about 5°/min.). An analysis of the distribution of the transient response along the growing zone shows that the active phase of the response has a distribution similar to that of the light sensitivity for the light-growth and phototropic responses. Experiments in which sporangiophores are centrifuged in an inert dense fluid indicate that the sensory mechanism of the transient response is closely related to the physical deformation of the growing zone caused by the action of the gravitational-centrifugal force on the sporangiophore as a whole. However, the response to a steady gravitational-centrifugal force is most likely not connected with this deformation, but is probably triggered by the shifting of regions or particles of differing density relative to one another inside the cell.

Plasma conditions during single bubble sonoluminescence.

2009 ◽  
Vol 126 (4) ◽  
pp. 2240
Author(s):  
Kenneth S. Suslick ◽  
David J. Flannigan
Keyword(s):  
Single Bubble ◽  
Single Bubble Sonoluminescence
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