Adhesive Contact of Small-Volume Structure

小体积结构的粘合接触

• 批准号: 0508989
• 负责人: Fuqian Yang
• 金额: $ 15万
• 依托单位: University of Kentucky Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-01 至 2009-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0508989&HistoricalAwards=false
• 关键词: Adhesive; Contact; Small; Volume; Structure

AbstractNanoelectromechanical systems (NEMS) and microelectromechanical systems (MEMS) have promising applications in information and biotechnology, e.g., MEMS optical switches in telephone switching equipment and implantable MEMS drug delivery devices. Unique capabilities of MEMS and NEMS devices can also be developed for micro-fluidic chip technology used for biological detection, toxin identification, and DNA analysis. The challenging issues in the realization of NEMS and MEMS include the optimization and control of these devices for high performance and reliability. This requires a comprehensive understanding of the physical behavior of materials in the microscale and the incorporation of this information in the design of these devices.The investigator proposes to investigate the contact adhesion of small-volume structure by using surface force techniques, such as nanoindentation that is capable of directly testing small-volume structures. The goal of the proposed work is to achieve a fundamental understanding of the effect of the scaling-dependent material properties on the contact behavior of small-volume structure and to improve the design methodology for the rapid introduction of advanced nano- and micro- fabrication technologies. The principal research objectives of the project are: 1) to determine the effect of the scaling-dependence of material properties on the contact adhesion of small-volume structure, and 2) to establish a relation between material properties and contact deformation. The fundamental mechanism controlling the contact deformation in the microscale will be studied through physical modeling of the relationship between material properties and the contact deformation of small-volume structure. The proposed research work will add to the knowledge base of nanomanufacturing and nanomanipulation and provide valuable engineering data for the development of nanofabrication techniques.The proposed work will advance the field of micromechanics of advanced materials. It will also advance discovery and understanding in the nanoworld while promoting teaching, training and learning.

纳米机电系统(NEMS)和微电子机械系统(MEMS)在信息和生物技术领域有着广阔的应用前景，例如电话交换设备中的MEMS光开关和植入式MEMS药物输送装置。MEMS和NEMS设备的独特能力也可以开发用于生物检测、毒素识别和DNA分析的微流控芯片技术。实现NEMS和MEMS的挑战性问题包括对这些器件进行高性能和高可靠性的优化和控制。这就需要全面了解材料在微尺度上的物理行为，并将这些信息融入到这些器件的设计中。研究人员建议使用表面力技术来研究小体积结构的接触粘附性，例如能够直接测试小体积结构的纳米压痕。这项工作的目标是从根本上了解材料的尺度特性对小体积结构接触行为的影响，并改进设计方法，以便快速引入先进的纳米和微制造技术。该项目的主要研究目标是：1)确定材料性能的比例依赖关系对小体积结构接触附着力的影响，以及2)建立材料性能与接触变形之间的关系。通过对材料性能与小体积结构接触变形之间关系的物理模拟，研究在微观尺度上控制接触变形的基本机理。这项研究工作将丰富纳米制造和纳米操纵的知识库，为纳米制造技术的发展提供有价值的工程数据，将推动先进材料微观力学领域的发展。它还将促进纳米世界的发现和理解，同时促进教学、培训和学习。