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Self Oscillations and Cooling of Carbon Based NEMS Devices


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Title: Self Oscillations and Cooling of Carbon Based NEMS Devices
Authors: Nordenfelt, Anders
E-mail: anders.nordenfelt@physics.gu.se
Issue Date: 10-Apr-2012
University: Göteborgs universitet. Naturvetenskapliga fakulteten
Institution: Department of Physics ; Institutionen för fysik
Parts of work: Magnetomotive Instability and Generation of Mechanical Vibrations in Suspended Semiconducting Carbon Nanotubes A. Nordenfelt, Y. Tarakanov, L. Y. Gorelik, R. I. Shekhter, M. Jonson New Journal of Physics 12 (2010) 123013
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Magnetomotive Cooling and Excitation of Carbon Nanotube Oscillations under Voltage Bias A. Nordenfelt Cent. Eur. J. Phys., 9(5), (2011), 1288-1293
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Spin-controlled nanomechanics induced by single-electron tunneling D. Radic, A. Nordenfelt, A.M. Kadigrobov, R. I. Shekhter, M. Jonson, L. Y. Gorelik PRL 107, 236802 (2011)
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Selective self-excitation of higher vibrational modes of graphene nano-ribbons and carbon nanotubes through magnetomotive instability A. Nordenfelt arXiv:1112.0921v1
Date of Defence: 2012-05-04
Disputation: Fredagen den 4e maj 2012, kl 13.00, FB-salen, Fysikgården 4
Degree: Doctor of Philosophy
Publication type: Doctoral thesis
Keywords: nano electro-mechanics
carbon nanotubes
Abstract: We investigate the electromechanical properties of a number of system geometries featuring a doubly clamped Carbon Nanotube or Graphene sheet with a deflection sensitive resistance and an electronic feedback in the form of a Lorentz force or an electrostatic attraction. The nanotube is subjected to a constant current- or voltage bias and it is shown that when the electro-mechanical coupling exceeds a certain critical value the system becomes unstable to self-excitations of the mechanical vibrati... more
ISBN: 978-91-628-8460-4
URI: http://hdl.handle.net/2077/28579
Appears in Collections:Doctoral Theses / Doktorsavhandlingar Institutionen för fysik
Doctoral Theses from University of Gothenburg / Doktorsavhandlingar från Göteborgs universitet

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