Ultrasonically Induced Fluid-Particle Interactions as Nonometer Length Scales

早期关于水中低兆赫频率和低占空比的声学微空化的工作强烈地表明，流体携带的亚微米颗粒可以被声学诱骗以使人们知道它们的存在。确切的机制尚不完全清楚。这些测量将揭示纳米尺度上的流体/声学相互作用。将建立实验设备来调查这一现象，并寻找控制策略，使“声学哄骗”成为一种可行的技术。这将为检测、研究和了解超清洁液体中亚微米颗粒的存在提供一种新的方法。此外，与电子显微镜不同，该技术不需要特殊的样品制备，而且与激光方法不同，该技术在不透明环境中不会失明。应用范围从核电站清洁水中的腐蚀碎片检测到硅芯片工业的纳米级颗粒控制。

Earlier work on the acoustic microcavitation in the water at low megahertz frequencies and low duty cycles strongly suggests that the fluid-borne submicronic particles can be acoustically coaxed to make their presence known. The exact mechanism is not yet fully understood. The measurements will reveal fluid/acoustic interactions at nanometer length scales. Experimental facility will be set up to investigate the phenomenon and look for control strategies that will make "acoustic coaxing" a viable technique. This will offer a new way of detecting, studying and understanding submicronic particulate presence even in ultra- clean liquids. Further, unlike electron microscopy the technique will need no special sample preparation and unlike laser method the technique will not be blind in opaque environments. Applications range from the detection of corrosion debris in the clean water for nuclear power plants to the particulate control in the nanometer regime for silicon chip industry.