Integrated Studies of Interfaces in Nanocomposites and Nanoimprinting

该项目的目的是研究基本的界面摩擦机制，并为纳米复合材料和纳米印迹开发新的设计概念。本文将开发一种独特的方法来定量测量纳米纤维增强金属/陶瓷纳米复合材料和金属纳米压印中的界面摩擦。目的是演示控制界面的原理，以实现强、坚韧的纳米复合材料和非润滑纳米印迹技术。此外，在原子和微观力学尺度上的多尺度模型将被开发来解释实验结果，并解决纳米复合材料和纳米印迹界面的重要问题。模拟和实验工作将结合起来，以确定纳米尺度下的界面摩擦机制。研究结果将为纳米尺度界面摩擦测量提供一种通用方法，为材料开发提供设计指南，并为材料和工艺优化策略提供新概念。这项研究结合了两个高影响力的主题，纳米复合材料和纳米印迹，通过一种创新的方法来研究纳米级界面，这两个主题都至关重要。将界面的实验测量与理论分析相结合，将有助于深入了解界面现象，揭示新的界面机理。我们的成功还将带来一系列积极的应用进展，包括但不限于：用于航空航天下一代发动机的坚固、坚韧和轻质结构材料系统；MEMS元件和器件的多功能纳米材料，以及环保制造。在开展基础研究的同时，还将开展配套教育项目，为研究生、本科生和高中生提供基础研究培训和教育机会。将作出特别努力，鼓励妇女和代表性不足的少数民族学生参与研究。

The objective of this project is to study the fundamental interfacial friction mechanisms and to develop new design concepts for both nanocomposites and nanoimprinting. A unique approach will be developed to quantitatively measure the interfacial friction in nanofiber reinforced metal/ceramic nanocomposites and in metal nanoimprinting. The aim is to demonstrate the principles of controlling the interfaces to achieve strong, tough nanocomposites, and non-lubricated nanoimprinting technology. In addition, a multiscale modeling at atomistic and micromechanics scales will be developed to interpret experimental results and address important questions on the interfaces in nanocomposites and nanoimprinting. The modeling and experimental work will be integrated to determine the interfacial friction mechanisms at nanoscale. The research results will provide a generic methodology for measuring the interfacial friction at the nanoscale, design guidelines for material development, and new concepts for material and process optimization strategies. This research unifies two high-impact themes, nanocomposites and nanoimprinting, by an innovative methodology created for studying nanoscale interfaces critical to both themes. The integration of experimental measurement and theoretical analysis on the interfaces will offer insight into the interfacial phenomena and uncover new interfacial mechanisms. Our success will also generate a series of positive advances on applications, including but not limited to: strong, tough and light-weight structural material systems for next-generation engines in the aerospace; multifunctional nanomaterials for MEMS components and devices, and environmentally-friendly manufacturing. Together with the proposed basic research, a matching education program will be carried out, which will provide basic research training and education opportunities to graduate students, undergraduate students and high school students. Special effort will be made to encourage women and under-represented minority students to participate in the research.