Ultrasonically Induced Fluid-Particle Interactions as Nonometer Length Scales

超声波诱导的流体-粒子相互作用作为纳米长度尺度

• 批准号: 9110920
• 负责人: Sameer Madanshetty
• 金额: $ 7万
• 依托单位: Trustees of Boston University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-06-01 至 1994-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9110920&HistoricalAwards=false
• 关键词: Ultrasonically; Induced; Fluid; Particle; Interactions

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.

早期关于水中声微空化的工作， 低兆赫频率和低占空比 这表明，流体携带的亚微米颗粒可以是 用声音来吸引他们的注意 的确切 机制尚未完全理解。 测量结果将 揭示了纳米尺度下的流体/声学相互作用。 将建立实验设施来研究 现象，并寻找控制策略， “声学哄骗”是一种可行的技术。 这将提供一种新的检测、研究和 了解亚微米颗粒的存在，即使在超 干净的液体 此外，与电子显微镜不同， 该技术不需要特殊样品制备， 激光法该技术将不会在不透明的盲目 环境. 应用范围从检测 核电站清水中的腐蚀碎片 到硅的纳米范围内的颗粒控制 芯片产业