Search for dissertations about: "nano electro-mechanics"

Found 1 swedish dissertation containing the words nano electro-mechanics.

2. 1. Self Oscillations and Cooling of Carbon Based NEMS Devices

   Author : Anders Nordenfelt; Göteborgs universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; 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 vibrations accompanied by oscillations in the voltage drop and current through the nanotube. READ MORE