CAREER: Ferrohydrodynamic Pumping in Traveling Magnetic Fields: Theory and Fluidic Applications

职业：行进磁场中的铁流体动力泵送：理论和流体应用

• 批准号: 0449264
• 负责人: Hur Koser
• 金额: $ 40万
• 依托单位: Yale University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-02-15 至 2010-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0449264&HistoricalAwards=false
• 关键词: CAREER; Ferrohydrodynamic; Pumping; Traveling; Magnetic

This proposal presents a closed-loop magnetic fluid (ferrofluid) pumping scheme using traveling magnetic fields. Pumping ferrofluids with external magnetic fields alone opens the door to a wide range of applications at the macro, micro and nano-scales, resulting in reliable, scalable, simpler, cheaper, compact and energy efficient fluid actuation concepts. The insights and experience gained as part of this proposed work will inspire and lead to investigations of a wider range of applications for ferrofluids, including cooling, biomedical and manufacturing industries, both within the PI's research laboratory and elsewhere.Intellectual Merits: The proposed work involves a multi-disciplinary research program that incorporates colloidal chemistry, magnetism and fluid mechanics, combining fundamental modeling and analysis with a simple and effective testing methodology. The proposal offers to advance the physical understanding of fluid mechanics at multiple size scales, coupled with nano-scale magnetic phenomena and magnetization dynamics. The study will integrate physical, mathematical and numerical modeling with both macro- and micro-scale experiments. This approach results in testable theoretical predictions and develops a fundamental understanding of ferrohydrodynamics that allows effective device designs, enabling practical and useful applications.Broader Impacts: The results of this study will provide valuable opportunities for the interdisciplinary training of both undergraduate and graduate students, as well as ample prospects for outreach activities in the greater New Haven area around Yale University. One of the research tools that will be used as part of this project involves low cost microfluidic devices which lend themselves naturally to the creation of a design-based, hands-on bioengineering teaching laboratory for both undergraduate and graduate students. A teaching module already being developed by the PI includes an online, interactive tutorial software, a diffusion simulation package, cheap yet powerful laboratory components designed around microfluidic devices, and associated real-time analysis software. The goal of the teaching module is to help students understand key concepts of microfluidics via a hypothesis and testing-based methodology. The PI is currently working on adapting the module for use at Yale University and other institutions. This coursework development is aimed at ensuring an interdisciplinary approach to Engineering education, both at the graduate and undergraduate levels.The PI has chosen the Connecticut Pre-Engineering Program (CPEP) as his main collaborator for his planned outreach activities around the New Haven area, which has a significant population of socially and economically "at-risk" children, as well as a high concentration of traditionally underrepresented minority students. He has already volunteered to participate in their teacher development program and classroom enrichment activities. The PI will share the beautiful and magical world of ferrofluids with young students, bringing in demonstration kits (comprised of various oil and water based ferrofluids, small permanent magnets and videos detailing experiments they can conduct in the classroom) and artistic pictures and movies taken using ferrofluids. He is also getting ready to host open-house days in his laboratory for visits by secondary school students, as well as invite qualified high school minority students for summer internship programs. Finally, the PI has volunteered to act as a faculty judge in the upcoming New Haven Science Festival.

该方案提出了一种利用行波磁场的闭环式磁流体(磁流体)抽运方案。仅通过外磁场泵送磁流体就可以在宏观、微观和纳米尺度上实现广泛的应用，从而产生可靠、可扩展、更简单、更便宜、紧凑和节能的流体致动概念。作为这项拟议工作的一部分，所获得的见解和经验将启发并导致在PI的研究实验室和其他地方对磁流体的更广泛的应用进行调查，包括冷却、生物医学和制造行业。智力优势：拟议的工作涉及一项融合了胶体化学、磁学和流体力学的多学科研究计划，将基础建模和分析与简单有效的测试方法相结合。这项提议提供了在多个尺寸尺度上促进对流体力学的物理理解，并结合纳米尺度的磁现象和磁化动力学。这项研究将把物理、数学和数值模拟与宏观和微观实验结合起来。这种方法产生了可检验的理论预测，并发展了对铁水动力学的基本理解，从而可以进行有效的设备设计，使实际和有用的应用成为可能。广泛的影响：这项研究的结果将为本科生和研究生的跨学科培训提供宝贵的机会，并为耶鲁大学周围的纽黑文地区的推广活动提供充足的前景。作为该项目的一部分，将使用的研究工具之一涉及低成本的微流控设备，这些设备自然有助于为本科生和研究生创建基于设计的、动手操作的生物工程教学实验室。PI已经开发了一个教学模块，包括一个在线互动教学软件、一个扩散模拟包、围绕微流控设备设计的廉价但功能强大的实验室组件，以及相关的实时分析软件。该教学模块的目标是通过基于假设和测试的方法帮助学生理解微流体学的关键概念。PI目前正在努力调整该模块，以供耶鲁大学和其他机构使用。这门课程的开发旨在确保在研究生和本科水平上采用跨学科的工程教育方法。国际工程学院选择康涅狄格州工程预科项目(CPEP)作为他在纽黑文地区计划的外展活动的主要合作伙伴，纽黑文地区有大量社会和经济上处于危险中的儿童，以及高度集中的传统上代表不足的少数族裔学生。他已经自愿参加了他们的教师发展计划和课堂充实活动。PI将与年轻学生分享美丽而神奇的磁流体世界，带来演示工具包(包括各种油和水基磁流体、小型永久磁铁和详细介绍他们可以在课堂上进行的实验的视频)，以及使用磁流体拍摄的艺术照片和电影。他还准备在自己的实验室举办开放日，供中学生参观，并邀请符合条件的高中少数民族学生参加暑期实习项目。最后，PI自愿在即将到来的纽黑文科学节上担任教职员工评委。