Inviscid wetting and spreading by capillarity: the 'walking' instability

通过毛细作用进行无粘润湿和扩散：“行走”不稳定性

• 批准号: 1236582
• 负责人: Paul Steen
• 金额: $ 36万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1236582&HistoricalAwards=false
• 关键词: Inviscid; wetting; spreading; capillarity; walking

1236582SteenA moving liquid spreads across a solid by displacing the surrounding gas. The recent discovery that, under certain circumstances, the energy stored in the liquid shape can be converted into the energy of liquid motion - as in the droplet "walking instability" - represents a heretofore unknown pathway of energy conversion of potentially vast significance. The objective of this study is to map out the circumstances where this new pathway is operative by developing theoretical stability predictions and by testing these predictions against experiment. The approach that enables achieving our objective is jointly based on fresh mathematical techniques (for prediction) and recent innovative methods to tailor solid surface properties in the lab (for testing). The intellectual merit of this study lies in the new techniques for prediction and those to bring to life the predicted behavior. Broader impacts of this study will accrue for both human resource development and technology. On the side of technology, in the manufacturing arena, immersion lithography for semiconductor processing and casting of wide-format silicon subtrates for solar panel applications stand to benefit while, in the agricultural sciences arena, new paradigms for droplet atomization will enable better localization of pesticide spray while, in the health-care arena, tunable droplet actuation stands to be of benefit to lab-on-chip diagnostic devices. On the side of human resources, female graduate students will be trained as technical leaders through the development of an outreach module that brings the excitement of liquid shape-change motions to high school students and their parents and thereby also works to broaden female participation in the science, technology, engineering and mathematics disciplines.

1236582 Steen移动的液体通过置换周围的气体而在固体上扩散。 最近发现，在某些情况下，储存在液体形状中的能量可以转化为液体运动的能量-如液滴“行走不稳定性”-代表了迄今为止未知的具有潜在巨大意义的能量转化途径。 本研究的目的是绘制出的情况下，这条新的途径是通过发展理论的稳定性预测，并通过测试这些预测对实验的操作。 实现我们目标的方法是基于新的数学技术（用于预测）和最近的创新方法，以在实验室中定制固体表面特性（用于测试）。 这项研究的智力价值在于预测的新技术和那些使预测的行为栩栩如生的技术。 这项研究将对人力资源开发和技术产生更广泛的影响。 在技术方面，在制造竞技场中，用于半导体处理的浸没光刻和用于太阳能电池板应用的宽幅硅衬底的铸造将受益，而在农业科学竞技场中，用于液滴雾化的新范例将使得能够更好地定位农药喷雾，而在卫生保健竞技场中，可调液滴致动将有益于芯片实验室诊断设备。 在人力资源方面，女研究生将通过开发一个推广模块，将液体变形运动带给高中生及其家长，从而努力扩大女性在科学、技术、工程和数学学科的参与，从而被培训为技术领导者。