Sonically Induced Microstreaming Applied to a Surface Reaction
Sonically Induced Microstreaming Applied to a Surface Reaction
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声波诱导微流应用于表面反应
DOI：
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发表时间：
1959
期刊：
影响因子：
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通讯作者：
C. E. Adams
中科院分区：
文献类型：
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作者：
W. Nyborg;R. Gould;F. J. Jackson;C. E. Adams
特殊的布置用于在发生反应的表面附近产生小规模涡流。涉及显影剂作用于照相乳剂的实验表明，在近地表流集中的小区域中，显影过程显着加速。共振气泡似乎是迄今为止最有效的声波诱发微涡流来源。当这样的气泡停留在乳液表面上时，其附近的发育反应会受到显着影响，显然是由于局部“微搅拌”，环境压力幅度远小于声波和超声波应用中通常使用的压力幅度。声波微流，尤其是在边界处的共振气泡附近引起的声波微流，似乎是解释某些众所周知的超声波效应的重要机制。持续的发展可能会导致以受控和可指定的方式将微流应用于表面过程的方法。
Special arrangements are used to produce small‐scale eddying near surfaces at which reactions are taking place. Experiments in which the reaction involves a photographic emulsion acted upon by developer show that the development process is considerably accelerated in small areas where the near‐surface flow is concentrated. Resonant gas bubbles appear to be by far the most efficient sources of sonically induced micro‐eddying. When such a bubble rests on an emulsion surface the development reaction in its neighborhood is significantly affected, evidently because of the local “microstirring,” at ambient pressure amplitudes much less than are typically used in sonic and ultrasonic applications. Sonic microstreaming, especially as induced near resonant bubbles at boundaries, appears to be an important mechanism in accounting for certain well‐known effects of ultrasound. Continued development may lead to means for applying microstreaming to surface processes in a controlled and specifiable manner.