Nanomechanics with Nanowires

纳米线的纳米力学

• 批准号: 26312951
• 负责人: Privatdozent Dr.-Ing. Volker Cimalla
• 金额: --
• 依托单位: Fraunhofer-Institut für Angewandte Festkörperphysik (IAF)
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/26312951?language=en
• 关键词: Nanomechanics; Nanowires

Our proposal is focused on part 3: ¿preparation and 4: ¿characterization of the priority program SPP 1165: ¿Nanowires and Nanotubes . Our main target is the investigation of mechamcal properties of nanowires, their coupling to electronic sensor structures äs transducers and the realization of a nanoelectromechanical biomimetic demonstrator. For that purpose, a universal applicable set of tools for the mechanical characterisation of nanowires shall be developed, independent on their fabrication, their geometry and the used materials. Technologies will be developed to align the nanowires and to couple them to an appropriate transducer. Initially the elastic properties of clamped nanowires will be analyzed. The main part of the investigations will be performed on resonant structures. Both well defined double clamped and randomly distributed single clamped nanowires will be investigated. The basic parameters of resonant structures resonant frequency and quality factors are used to extract Young s modulus, internal strain the influence of defects, adsorbates and the interaction with the environment. In addition, adsorption, stability and elastic properties will be investigated using nonresonant nanowires. With the extracted information a basic module for novel nanowire based nanoelectromechanical devices will be designed. This System will combine the piezo- and pyroelectric properties of group Ill-nitrides with the mechamcal specifics of nanowires. A demonstrator for the flow velocities in microfluidic Systems will be focused on. Perspectively, the proposed nanowirebased demonstrator is suitable for a variety of biocompatible biomimetic sensors, e.g. for acceleration and rotary motion.

我们的建议集中在优先计划SPP 1165：纳米线和纳米管的第3部分：准备和4：表征。我们的主要目标是研究纳米线的力学性质，研究纳米线与电子传感器结构的耦合？S换能器，并实现纳米机电仿生演示装置。为此，应开发一套通用的纳米线机械表征工具，独立于纳米线的制造、几何形状和使用的材料。将开发技术来对准纳米线，并将它们耦合到适当的换能器。首先分析被夹紧的纳米线的弹性性质。研究的主要部分将在共振结构上进行。我们将研究定义明确的双夹紧纳米线和随机分布的单夹紧纳米线。利用谐振结构的基本参数、谐振频率和品质因子来提取杨氏S模数、内部应变对缺陷、吸附物的影响以及与环境的相互作用。此外，还将使用非共振纳米线来研究其吸附、稳定性和弹性性质。利用所提取的信息，将设计出新型纳米线基纳机电器件的基本模块。这一系统将把病态氮化物的压电性和热释电性与纳米线的机械特性结合起来。将重点介绍微流控系统中的流速演示仪。从长远来看，所提出的基于纳米管的演示器适用于各种生物兼容的仿生传感器，例如用于加速和旋转运动。