CAREER: Nanowire Interfaces for Increased Strength and Multifunctionality

这项职业研究和教育计划的目标是研究PI最近确定的一种新型陶瓷氧化锌纳米线界面，以研究纳米线界面对纤维增强复合材料的力学和多功能性能的影响。这一基础性研究将发展一种理论，定义从纳米线界面到宏观响应的性质的转换，并表征界面的失效机制。采用实验和理论分析相结合的方法，研究界面的结构-性能关系及其对材料S力学和功能响应的影响。这项研究的智力价值超越了碳纤维复合材料，具有潜在的科学发现，可应用于连续和不连续的纤维增强金属和陶瓷基复合材料。这项努力还可能导致对其他界面进行功能分级的新方法，例如在假肢和生物植入物中发现的界面，从而产生新的生物灵感界面，这些界面很少在两种机械性能截然不同的材料之间表现出离散的边界。在界面含有活性纳米夹杂物的复合系统的建模方面将取得根本性进展，从而导致这项技术的未来应用，范围从自我监测的生物植入到能量收集结构。这一职业计划的教育部分旨在将最先进的研究转移到课堂上，并通过面向从中学到研究生的学生来提高工程招聘和留存。亚利桑那州立大学计划举办家庭工程之夜(FEN)，包括来自四个少数民族学生团体的亚利桑那州立大学本科生，纳米和多尺度复合材料的研究驱动课程，以及继续进行强大的本科生研究计划。其目的是加强招聘和留住工程师，包括少数族裔和代表性不足的群体，并激励学生致力于终身学习和持续参与科学和工程领域。

The objective of this CAREER research and education plan is to study a novel ceramic ZnO nanowire interface recently identified by the PI to study the role of a nanowire interphase on the mechanical and multifunctional properties of a fiber reinforced composite. This fundamental study will develop a theory defining the translation of the properties from the nanowire interface to the macroscopic response and characterize the failure mechanism of the interface. Both experimental and theoretical analyses will be employed to study the structure-property relationships of the interface and their influence on the material?s mechanical and functional response. The intellectual merit of this research extends beyond carbon fiber composites with potential scientific findings that can be applied to continuous and discontinuous fiber reinforced metal and ceramic matrix composites. The effort may also lead to new methods for functionally grading other interfaces such as those found in prosthetics and biological implants leading to new biologically inspired interfaces which rarely exhibit discrete boundaries between two materials of vastly different mechanical properties. Fundamental advances in the modeling of composite systems with active nanoscale inclusions in the interphase will be accomplished, resulting in future applications of this technology, ranging from self-monitoring biological implants to energy harvesting structures.The educational component of this CAREER plan is designed to transfer state-of-the-art research to the classroom and enhance engineering recruitment and retention by targeting students from middle school to graduate level. A Family Engineering Night (FEN) has been planned which will incorporate ASU undergraduates from four minority student groups, a research-driven course in nano and multi-scale composites, and the continuation of a strong undergraduate research program. The purpose is to enhance recruitment and retention of engineers, including minorities and underrepresented groups, and motivate students to commit to a life-long process of learning and sustained involvement in science and engineering fields.