Collaborative Research: Deciphering the Reliability of Nano Ceramic Films on Polymer Substrates: A Mechanistic Study

合作研究：破译聚合物基底上纳米陶瓷薄膜的可靠性：机理研究

基本信息

批准号：
0928278
负责人：
Teng Li
金额：
$ 20.3万
依托单位：
University of Maryland, College Park
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2009
资助国家：
美国
起止时间：
2009-08-15 至 2012-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0928278&HistoricalAwards=false
关键词：
Collaborative Research Deciphering Reliability Nano

项目摘要

The objective of this collaborative research is to explore the fracture and fatigue mechanisms of nano ceramic films on polymer substrates under monotonic and cyclic loadings. Functional nano ceramic films on polymer substrates are emerging as key building blocks to enable promising technologies, such as flexible electronics and next generation bioactive implants. The huge mechanical mismatch and large mechanical loads lead to complex and rich fracture behaviors of thin ceramic films on polymer substrates, which are far from well understood. In particular, recent experiments showed fatigue damage of indium tin oxide films on polymer substrates under cyclic loads, a phenomenon that cannot be explained by conventional fatigue mechanisms. The future success of abovementioned promising technologies is contingent to the mechanistic understanding of the fracture and fatigue of nano ceramic films on polymer substrates. In this project, a collaborative research framework (from analytic modeling, simulations to in situ experiments) will be built to investigate the yet-unexplored mechanisms that govern the mechanical reliability of nano ceramic films on polymer substrates. The potential consequence of failure in functional nano ceramic films on polymer substrates is significant in flexible electronics and bioactive implants. The proposed research will offer fundamental insights into the yet-unexplored mechanisms that govern the reliability of flexible devices and bioactive implants, and enable more robust nanomanufacturing strategies of these emerging technologies. By leveraging cyberinfrastructure, the new knowledge from the project will be disseminated to reach much broader audience, and a new generation of students will be equipped with interdisciplinary perspectives.

这项合作研究的目的是探索聚合物基底上的纳米陶瓷薄膜在单调和循环载荷下的断裂和疲劳机制。聚合物基底上的功能性纳米陶瓷薄膜正在成为实现柔性电子和下一代生物活性植入物等有前景技术的关键构建模块。巨大的机械失配和大的机械载荷导致聚合物基底上的陶瓷薄膜发生复杂而丰富的断裂行为，而这些行为还远未得到很好的理解。特别是，最近的实验表明，聚合物基底上的氧化铟锡薄膜在循环载荷下会发生疲劳损伤，这种现象无法用传统的疲劳机制来解释。上述有前景的技术未来的成功取决于对聚合物基底上纳米陶瓷薄膜断裂和疲劳的机理理解。在该项目中，将建立一个协作研究框架（从分析建模、模拟到原位实验），以研究尚未探索的控制聚合物基材上纳米陶瓷薄膜机械可靠性的机制。聚合物基底上的功能性纳米陶瓷薄膜失效的潜在后果对于柔性电子产品和生物活性植入物来说非常重要。拟议的研究将为尚未探索的控制柔性设备和生物活性植入物可靠性的机制提供基本见解，并为这些新兴技术提供更稳健的纳米制造策略。通过利用网络基础设施，该项目的新知识将被传播到更广泛的受众，新一代学生将具备跨学科的视角。