Design and Creation of Nanomechanical Architectures from Folding of Ultrathin Bi-layer Films

未来的纳米技术要求开发具有新的设计原理和更高程度控制的纳米纤维技术。拟议的研究计划将探索一种新颖的和通用的方法，通过应变双层膜的纳米机械架构的范例制造纳米结构。该研究计划将应用多尺度理论和计算方法，研究由机械弯曲应变双层膜形成各种三维纳米结构的基本原理。该研究计划将理论和计算工作与强大的实验合作相结合，将涵盖三个互补的研究领域：al工艺实验合作包括使用Si/SiGe应变双层薄膜制造和表征新型纳米结构。科学的目标是获得基本的理解复合层状薄，膜结构并建立用于纳米织物的新颖和通用方法的设计原理，即，纳米机械结构。该计划还将增加我们对表面重建和化学键合方面原子水平应力/应变的理解。更广泛的影响：这项研究计划的目标和自然结果是学生的教育。它将丰富犹他州大学PI最近开发的纳米材料和纳米力学新课程。在这个项目中开发的一些计算技术将作为开放和共享的资源提供给广大的研究和教育。通过我们与犹他州科学中心合作的教育和推广活动，将有意识地努力宣传拟议的工作。这些努力将对教育公众了解纳米科学和纳米技术产生重大影响，纳米科学和纳米技术被认为是21世纪世纪的主要经济刺激因素之一。

The nanotechnology of the future demands the development of nanofabrication techniques with new principles of design and higher degrees of control. The proposed research program will explore a novel and versatile approach for fabricating nanostructures via a paradigm of nanomechanical architecture of strained bi-layer films. It will apply multi-scale theoretical and computational methods to investigate the fundamental principles governing the formation of a variety of three-dimensional nanostructures resulting from mechanical bending of ultrathin strained bi-layer films.The reseach program, combining synergistically theoretical and computational efforts with strong experimental collaboration, will cover three complementary research areas: al process Experimental collaboration includes fabrication and characterization of novel nanoarchitectures using Si/SiGe strained bi-layer thin films.Swill be used Intellectual Merit: The scientific objective is to obtain fundamental understanding of the nanomechanical properties of composite layered thin-film structures and to establish design principles for a novel and versatile approach for nanofabrication, i.e., the nanomechanical architecture. The proposed program will also increase our understanding of stress/strain at the atomic level in terms of surface reconstruction and chemical bonding. Broader Impacts: A goal and natural outcome of this research program is the education of students. It will enrich a new course on nanomaterials and nanomechanics, developed recently by the PI at University of Utah. Some computational techniques developed in this program will be made available as open and shared resources for research and education at large. Conscious efforts will be made to publicize the proposed work, by our educational and outreach activity collaborating with Utah Science Center. These efforts will make significant impact on educating the general public about nanoscience and nanotechnology, which is considered as one major economic stimulus of the 21st century.