The influence of acoustic power on multibubble sonoluminescence in aqueous solution containing organic solutes
The influence of acoustic power on multibubble sonoluminescence in aqueous solution containing organic solutes
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DOI：
10.1021/jp052747n
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发表时间：
2005-10-27
影响因子：
3.3
通讯作者：
Grieser, F
中科院分区：
文献类型：
--
作者：
Sunartio, D;Ashokkumar, M;Grieser, F
研究了外加声功率对多泡声致发光强度的影响。在大多数的实验条件下使用的，脂肪醇的水溶液中添加被发现抑制MBSL强度，虽然在某些条件下也观察到的MBSL强度的增强。相比之下，水溶液中阴离子表面活性剂十二烷基硫酸钠（SDS）的存在通常会增强观察到的MBSL强度。对于一系列脂肪醇和SDS，在358 kHz下观察到MBSL强度对所施加的声功率（在0.78-1.61 W/cm（2）的范围内）的强烈依赖性。相对SL淬灭显着较高的醇溶液在较高的声功率，而相对SL增强较低，在较高的声功率在SDS溶液。这些观察结果已被解释为材料蒸发成气泡，整流扩散，气泡集群和气泡气泡聚结的组合。
The effect of varying the applied acoustic power on the extent to which the addition of water-soluble solutes affect the intensity of aqueous multibubble sonoluminescence (MBSL) has been investigated. Under most of the experimental conditions used, the addition of aliphatic alcohols to aqueous solutions was found to suppress the MBSL intensity, although an enhancement of the MBSL intensity was also observed under certain conditions. In contrast, the presence of an anionic surfactant sodium dodecyl sulfate (SDS) in aqueous solutions generally enhanced the observed MBSL intensity. For a series of aliphatic alcohols and SDS, a strong dependence of the MBSL intensity on the applied acoustic power (in the range of 0.78-1.61 W/cm(2)) at 358 kHz was observed. The relative SL quenching was significantly higher at higher acoustic powers for the alcohol solutions, whereas the relative SL enhancement was lower at higher acoustic powers in SDS solutions. These observations have been interpreted in terms of a combination of material evaporation into the bubble, rectified diffusion, bubble clustering and bubble-bubble coalescence.