Nanomechanics with Nanowires

我们的提案集中在第3部分：制备和第4部分：优先项目SPP 1165的表征：纳米线和纳米管。我们的主要目标是研究纳米线的机械性能，它们与电子传感器结构äs换能器的耦合以及纳米机电仿生演示器的实现。为此，应开发一套通用的适用于纳米线机械特性的工具，独立于纳米线的制造、几何形状和使用的材料。技术将被开发来排列纳米线并将它们耦合到一个合适的换能器上。首先分析夹紧纳米线的弹性特性。研究的主要部分将在共振结构上进行。明确的双夹紧和随机分布的单夹紧纳米线将被研究。利用谐振结构的基本参数、谐振频率和质量因子提取杨氏模量、内部应变、缺陷、吸附物的影响以及与环境的相互作用。此外，还将研究非谐振纳米线的吸附、稳定性和弹性性能。利用提取的信息，设计基于纳米线的新型纳米机电器件的基本模块。该系统将结合不良氮化物族的压电和热释电特性与纳米线的机械特性。本文将重点介绍微流体系统中流速的演示器。从角度来看，所提出的基于纳米线的演示器适用于各种生物相容性仿生传感器，例如加速和旋转运动。

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.