The effect of surface active solutes on bubbles exposed to ultrasound
The effect of surface active solutes on bubbles exposed to ultrasound
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DOI：
10.1016/s0001-8686(00)00064-6
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发表时间：
2001-01-29
影响因子：
15.6
通讯作者：
Ashokkumar, M
中科院分区：
文献类型：
--
作者：
Grieser, F;Ashokkumar, M
综述了一系列表面活性溶质、脂肪醇、烷基胺、羧酸和表面活性剂对暴露于超声波的气泡的影响。研究表明，溶质可以通过多种不同方式影响声致发光 (SL) 现象。离子表面活性剂对气泡间相互作用有很大影响，低浓度 (1 mM) 会导致 SL 增强。醇以及中性形式的有机酸和胺会引起 SL 猝灭。 SL猝灭归因于由于吸附在气泡界面的挥发性溶质的蒸发而在振荡气泡的热核心中形成和积累分解产物。一些结果是关于低浓度酒精对单个气泡产生的 SL 的影响以及暴露于超声波时气泡动力学的影响。这些结果支持了对多气泡系统中观察到的溶质诱导效应的解释。研究还表明，SL 可以用作内部光源来激发芳香族溶质，随后发出荧光，这一过程称为声光致发光。 (C) 2001 Elsevier Science B.V. 保留所有权利。
A review of the effects of a range of surface active solutes, aliphatic alcohols, alkyl amines, carboxylic acids and surfactants on bubbles exposed to ultrasound is presented. The solutes are shown to affect the phenomenon of sonoluminescence (SL) in quite a number of different ways. Ionic surfactants have a strong influence on interbubble interactions which at low concentrations (1 mM) results in an enhancement in SL. Alcohols and the neutral forms of the organic acids and amines induce SL quenching. The SL quenching is attributed to the formation and accumulation of decomposition products in the hot core of an oscillating bubble resulting from the evaporation of volatile solute adsorbed at the bubble interface. Some results are presented on the influence of low concentrations of alcohol on the SL generated from a single bubble and on the bubble dynamics, when exposed to ultrasound. These results add support to the interpretation given for solute-induced effects observed in multibubble systems. It is also shown that SL can be used as an internal light source to excite aromatic solutes that subsequently fluoresce, a process referred to as sonophotoluminescence. (C) 2001 Elsevier Science B.V. All rights reserved.