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

• 批准号: 0928297
• 负责人: Jun Lou
• 金额: $ 17.7万
• 依托单位: William Marsh Rice University
• 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 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0928297&HistoricalAwards=false
• 关键词: Collaborative; Research; Deciphering; Reliability; Nano

Abstract 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.

摘要本合作研究的目的是探讨聚合物基底上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膜正在成为实现有前途的技术的关键构件，例如柔性电子和下一代生物活性植入物。聚合物基陶瓷薄膜的巨大机械失配和大的机械载荷导致了其复杂而丰富的断裂行为，目前对这些行为的认识还很不够。特别是，最近的实验表明，在循环载荷下的聚合物基板上的氧化铟锡膜的疲劳损伤，不能用传统的疲劳机制解释的现象。上述有前途的技术的未来成功取决于对聚合物基底上的纳米陶瓷膜的断裂和疲劳的机理理解。在这个项目中，将建立一个合作研究框架（从分析建模，模拟到原位实验），以调查尚未探索的机制，管理聚合物基板上的纳米陶瓷薄膜的机械可靠性。在柔性电子和生物活性植入物中，聚合物基底上的功能纳米陶瓷膜失效的潜在后果是显著的。拟议的研究将为尚未探索的机制提供基本见解，这些机制管理柔性设备和生物活性植入物的可靠性，并使这些新兴技术的纳米制造策略更加强大。通过利用网络基础设施，该项目的新知识将传播到更广泛的受众，新一代学生将具备跨学科的视角。