"Contact Drop Formation and Contact Line Flows"

“接触滴形成和接触线流动”

• 批准号: 1066141
• 负责人: Kenneth Breuer
• 金额: $ 30万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2016-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1066141&HistoricalAwards=false
• 关键词: Contact; Drop; Formation; Line; Flows

1066141BreuerA three year program conducted at Brown University, will study the structure and dynamics of a moving contact line, and the implications of that nanoscale flow to the very practical application of droplet deposition for manufacturing and biotechnology. The moving contact line represents a singularity in the continuum description of fluid mechanics, as the no-slip boundary condition cannot be satisfied at the moving junction between a liquid, solid and gas phases. The relaxation of that boundary condition remains unexplored experimentally, and the current program seeks to directly measure the flow with nanometer-scale resolution. A second component of the program will be to determine how the contact line behavior affects the macroscopic formation of small droplets through contact drop deposition, a process which has direct application in industry for packaging, dispensing, manufacturing and biotechnology. The results obtained during this research will help guide design and analysis for a wealth of scientific and industrial applications, including coating technologies, microfabrication packaging and manufacturing. The program will support a graduate research student, as well as an undergraduate student. In addition to training of graduate students, there will be substantial interactions between Brown and industrial partners, and active outreach to the broader community, including the recruitment of underrepresented minority students, participation of K-12 students and teachers and in publicizing of results to the popular scientific media.

1066141 Breuer在布朗大学进行的一项为期三年的计划，将研究移动接触线的结构和动力学，以及纳米级流动对制造业和生物技术中液滴沉积的实际应用的影响。移动接触线代表了流体力学连续描述中的奇异性，因为在液相、固相和气相之间的移动交界处无法满足无滑动边界条件。该边界条件的放松仍然未经实验探索，目前的计划旨在直接测量纳米级分辨率的流量。该计划的第二个组成部分将是确定接触线行为如何影响通过接触液滴沉积的小液滴的宏观形成，该过程在包装，点胶，制造和生物技术工业中具有直接应用。 在这项研究中获得的结果将有助于指导大量科学和工业应用的设计和分析，包括涂层技术，微加工包装和制造。该计划将支持一名研究生和一名本科生。除了研究生的培训，布朗和工业合作伙伴之间将有大量的互动，并积极推广到更广泛的社区，包括招聘代表性不足的少数民族学生，K-12学生和教师的参与，并在结果的宣传大众科学媒体。