CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Magnetomotive Instability and Generation of Mechanical Vibrations in Suspended Semiconducting Carbon Nanotubes

Anders Nordenfelt ; Yury A. Tarakanov (Institutionen för teknisk fysik, Kondenserade materiens teori) ; Leonid Y. Gorelik (Institutionen för teknisk fysik, Kondenserade materiens teori) ; Robert I. Shekhter ; Mats Jonson
New Journal of Physics (1367-2630). Vol. 12 (2010), 12, p. 123013 (9 pages).
[Artikel, refereegranskad vetenskaplig]

We investigate the electromechanics of a freely suspended semiconducting carbon nanotube subjected to a magnetic field H in the current-biased regime and show that self-excitation of mechanical nanotube vibrations can occur if H exceeds a critical value Hc of the order of 10–100 mT. The effect can be detected by measuring the magnetic field dependence of the time-averaged voltage drop across the nanotube, which has a singularity at H=Hc. We discuss the applications of the device as an active, tuneable radiofrequency oscillator.

Nyckelord: carbon nanotube, oscillator, self oscillation, magnetomotive instability

Denna post skapades 2011-01-13. Senast ändrad 2012-12-03.
CPL Pubid: 133458


Läs direkt!

Lokal fulltext (fritt tillgänglig)

Länk till annan sajt (kan kräva inloggning)

Institutioner (Chalmers)

Institutionen för fysik (GU) (GU)
Institutionen för teknisk fysik, Kondenserade materiens teori (1900-2015)



Chalmers infrastruktur