CAREER: Investigation of Mechanical Properties of Carbon Nanotube Macro-Films in Integrated Systems

摘要本学院早期职业发展（CAREER）项目的研究目标是从根本上了解碳纳米管宏观薄膜在集成系统中的力学性能。本课题的主要研究任务是：(1)研究独立碳纳米管宏观薄膜的力学性能；(2)确定碳纳米管宏观薄膜与衬底之间的界面强度；(3)在集成系统中实现碳纳米管宏观薄膜的可变形性。多尺度方法将被用来捕捉碳纳米管宏观薄膜固有的多尺度性质，即具有纳米尺度细节的宏观特征，如束间连接的形态。一种屈曲方法，包括弯曲薄膜在柔性衬底上的屈曲，将用于测量界面强度，并使碳纳米管宏观薄膜在变形时不牺牲其电性能而完全变形。以屈曲碳纳米管宏观薄膜和固体电解质为材料制备可变形储能器件，作为测试系统力学性能的测试平台。实验和理论结合的研究将在开发具有理想力学性能的宏观碳纳米管网络的设计指南方面具有重要的潜力，这将对纳米科学和纳米工程领域产生重大影响。综合研究和教育将侧重于增加入学人数和保留代表性不足的学生，并通过与亚利桑那科学中心和凤凰城小学区合作的独特外展项目吸引公众。在此基础上，将开设一门新的高级/研究生课程。

CAREER: Investigation of Mechanical Properties of Carbon Nanotube Macro-Films in Integrated SystemsAbstractThe research objective of this Faculty Early Career Development (CAREER) project is to fundamentally understand the mechanical properties of carbon nanotube macro-films in integrated systems. The primary research tasks of this project are (1) to investigate the mechanical properties of stand alone carbon nanotube macro-films; (2) to identify interfacial strength between carbon nanotube macro-films and substrates; and (3) to achieve deformability of carbon nanotube macro-films in integrated systems. A multiscale approach will be employed to capture the intrinsic multiscale nature of carbon nanotube macro-films, namely macroscopic features with nanoscale details, such as morphologies of inter-bundle junctions. A buckling method that involves buckled thin films on compliant substrates will be used to measure the interfacial strength, and to enable fully deformable carbon nanotube macro-films without sacrificing their electrical properties upon deformation. The deformable energy storage devices made from buckled carbon nanotube macro-films and solid electrolyte will be fabricated as a testing platform to examine the mechanical performance of the integrated system.The combined experimental and theoretical studies will carry significant potential in the development of a design guideline for the assembly of macroscopic carbon nanotube networks with desired mechanics properties that can significantly impact nanoscience and nanoengineering fields. Integrated research and education will focus on increasing enrollment and retention of underrepresented students and engaging the public through unique outreach programs in partnership with the Arizona Science Center, and Phoenix Elementary School District. A new senior/graduate level course will be developed based on this research.