AGS-PRF: Building a Microfluidic Platform to Study Atmospheric Aerosol

AGS-PRF：构建研究大气气溶胶的微流体平台

基本信息

批准号：
1433514
负责人：
Andrew Metcalf
金额：
$ 8.6万
依托单位：
Metcalf Andrew R
依托单位国家：
美国
项目类别：
Fellowship Award
财政年份：
2014
资助国家：
美国
起止时间：
2014-09-01 至 2016-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1433514&HistoricalAwards=false
关键词：
AGS PRF Building Microfluidic Platform

项目摘要

Microfluidics is a multidisciplinary technique with applications in several science and engineering disciplines that yields practical design of systems in which small volumes (microliters or less) of fluids can be handled. Typically, gas bubbles or liquid droplets can be moved, mixed, separated or otherwise processed at a micro domain, and in ways that bulk processing simply cannot attain. [Common examples are ink-jet printers, or 'lab-on-chip' analysis systems]. There are several applications to the study of the physics and chemistry of individual, or group aerosol particles or droplets to which microfluidic approaches may be well tasked. Microfluidics allows precise control over droplet size and shape. The chemical composition of generated droplets will be chosen in order to replicate ambient atmospheric aerosol particles. When trapped in a hydrodynamic trap, a holding device, these aerosol mimics will be further examined by microscopy with an attached high-speed camera. Experiments with changing fluid flow rates, and, thus, extensional strain rate on the droplets, along with temperature, will change the environmental conditions experienced by the droplets. Direct educational benefits include the mentoring of graduate and undergraduate students in a multi-disciplinary research group. The project has the potential to foster increased partnerships between academia and industry because the methods used in this project have general applicability.

微流体是一种多学科技术，可应用于多个科学和工程学科，可产生可处理小体积（微升或更少）流体的系统的实用设计。通常，气泡或液滴可以在微域中移动、混合、分离或以其他方式进行处理，而这些方式是批量处理根本无法实现的。 [常见的例子是喷墨打印机或“芯片实验室”分析系统]。微流体方法可以很好地应用于个体或群体气溶胶颗粒或液滴的物理和化学研究。微流体可以精确控制液滴的尺寸和形状。将选择生成的液滴的化学成分，以复制周围大气气溶胶颗粒。当这些气溶胶模拟物被困在流体动力陷阱（一种固定装置）中时，将通过带有高速摄像机的显微镜进一步检查。改变流体流速以及液滴上的拉伸应变率和温度的实验将改变液滴所经历的环境条件。直接的教育效益包括在多学科研究小组中对研究生和本科生进行指导。该项目有潜力促进学术界和工业界之间加强伙伴关系，因为该项目中使用的方法具有普遍适用性。