Probing and Manipulating Heat Transfer in Nanofluids and Nanoemulsion Fluids

由于观察到的上级热性质，在使用纳米流体和纳米乳液流体以满足各种技术中的新挑战方面存在巨大的兴趣。然而，这些流体中的热传递的基本机制目前还没有得到很好的理解。有一个巨大的研究需求，以调查在这些流体中的能量传输的基本物理现象。该研究旨在探索纳米流体和纳米乳液的宏观热性质与微观结构和动力学之间的基本关系。将开发具有受控微观结构和动力学的模型纳米流体系统。这些模型系统，结合多管齐下的实验表征，将被用来解决现有的争议，在理解纳米流体和纳米乳液流体的能量传输过程。对纳米流体和纳米乳液流体中热传输的物理现象的透彻理解可以开发和优化具有显着增强的热物理性质的至关重要的流体。拟议的研究还旨在通过让学生作为研究伙伴参与研究和教育，并通过参与当地高中教育工作者和学生的推广活动，将研究和教育结合起来。除了为本项目直接支持的学生提供教育和培训机会外，代表性不足的本科生将通过NIST夏季本科生研究奖学金计划（www.surf.nist.gov）参与本研究。此外，纳米流体和纳米乳液流体的实践演示将在本科课程（ENME 332）中提供给学生。拟议中的研究还将利用外展计划ESTEEM（www.eng.umd.edu/k12/k12_summer-programs.html），通过动手实验和真实的生活例子激励高中生成为科学家和工程师。

0730963 Probing and Manipulating Heat Transfer in Nanofluids and Nanoemulsion FluidsThere has been enormous interest in using nanofluids and nanoemulsion fluids to meet new challenges in various technologies because of the observed superior thermal properties. However, the fundamental mechanisms of heat transfer in these fluids are currently not well understood. There exists a great need for research to investigate the underlying physical phenomena of energy transport in these fluids. The proposed research aims to explore the fundamental relation between the macroscopic thermal properties and the microscopic structure and dynamics of nanofluids and nanoemulsions. Model nanofluid systems with controlled microstructure and dynamics will be developed. These model systems, combined with a multi-pronged experimental characterization, will be used to resolve the existing controversy in understanding the energy transport process in nanofluids and nanoemulsion fluids. A thorough understanding of physical phenomena of thermal transport in nanofluids and nanoemulsion fluids allows for the development and optimization of critically important fluids with significantly enhanced thermophysical properties.The proposed research also seeks to integrate research and education by involving students as research partners, and by participating in outreach activities for local high school educators and students. Apart from the education and training opportunities for the students directly supported in this project, underrepresented undergraduate students will be involved in this research through the NIST Summer Undergraduate Research Fellowship Program (www.surf.nist.gov). Additionally, hands-on demonstrations of nanofluids and nanoemulsion fluids will be given to students in an undergraduate course (ENME332). The proposed research will also utilize the outreach program ESTEEM (www.eng.umd.edu/k12/k12_summer-programs.html) to motivate high school students with hands-on experiments and real life examples, to become scientists and engineers.