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Dresden 2014 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 101: Transport - Poster Session

TT 101.24: Poster

Thursday, April 3, 2014, 15:00–19:00, P2

Exploring mechanical material parameters from spectroscopy of nano-electromechanical systems — •Anh Tu Bohn1, F. Hocke1, M. Pernpeintner1, X. Zhou3,5, A. Schliesser4, T. J. Kippenberg3,5, R. Gross1,2, and H. Huebl11Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, Germany — 2Physik-Department, TU München, Germany — 3École Polytechnique Fédérale de Lausanne, Switzerland — 4Niels Bohr Institute, University of Copenhagen, Denmark — 5Max-Planck-Institut für Quantenoptik, Germany

The field of nano-electromechanics combines nanomechanical resonators with electrical circuits. In our nano-electromechanics experiments, we investigate a double layer nanomechanical beam consisting of Si3N4 and Niobium coupled to a superconducting microwave resonator. Using microwave noise spectroscopy, we determine the electromechanical coupling. Furthermore, the investigation of the nonlinear Duffing regime gives access to the Young’s modulus of the nano-beam. We compare our results with finite element modelling corroborating our experimental data. Additionally, we show that our experimental results can be well modelled by standard beam theory. Our technique provides a new way to explore the mechanical parameters of nanomechanical beams and could be extended to other hybrid structures. Financial support via the Nanosystems Initiative Munich is gratefully acknowledged.

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