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Title: Determination of effective mechanical properties of a double-layer beam by means of a nano-electromechanical transducer

We investigate the mechanical properties of a doubly clamped, double-layer nanobeam embedded into an electromechanical system. The nanobeam consists of a highly pre-stressed silicon nitride and a superconducting niobium layer. By measuring the mechanical displacement spectral density both in the linear and the nonlinear Duffing regime, we determine the pre-stress and the effective Young's modulus of the nanobeam. An analytical double-layer model quantitatively corroborates the measured values. This suggests that this model can be used to design mechanical multilayer systems for electro- and optomechanical devices, including materials controllable by external parameters such as piezoelectric, magnetostrictive, or in more general multiferroic materials.
Authors:
; ;  [1] ;  [2] ;  [2] ; ;  [3] ;  [3] ;  [4] ;  [1] ;  [2]
  1. Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, D-85748 Garching (Germany)
  2. (Germany)
  3. École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne (Switzerland)
  4. (Denmark)
Publication Date:
OSTI Identifier:
22350813
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 13; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; BEAMS; EQUIPMENT; LAYERS; MAGNETOSTRICTION; NANOSTRUCTURES; NANOTECHNOLOGY; NIOBIUM; NONLINEAR PROBLEMS; PIEZOELECTRICITY; SILICON NITRIDES; SPECTRAL DENSITY; STRESSES; TRANSDUCERS; YOUNG MODULUS