Project Details
Projekt
Nanomechanics with Nanowires
Applicant
Privatdozent Dr.-Ing. Volker Cimalla
Subject Area
Experimental Condensed Matter Physics
Term
from 2006 to 2010
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 26312951
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.
DFG Programme
Priority Programmes
Participating Person
Professor Dr. Oliver Ambacher
