Silicon Vibrating Wires at Low Temperatures

Details Silicon Vibrating Wires at Low Temperatures Silicon Vibrating Wires at Low Temperatures

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jltp..150..739c&link_type=abstract

Journal of Low Temperature Physics, Volume 150, Issue 5-6, pp. 739-790

Physics

9

Scientific paper

Nowadays microfabrication techniques originating from micro-electro nics enable to create mechanical objects of micron-size. The field of Micro-Electro-Mechanical devices (MEMs) is continuously expanding, with an amazingly broad range of applications at room temperature. Vibrating objects (torsional oscillators, vibrating wires) widely used at low temperatures to study quantum fluids, can be replaced advantageously by Silicon MEMs. In this letter we report on the study of Silicon vibrating wire devices. A goal-post structure covered with a metal layer is driven at resonance by the Laplace force acting on a current in a magnetic field, while the induced voltage arising from the cut magnetic flux allows to detect the motion. The characteristics of the resonance have been studied from 10 mK to 30 K, in vacuum and in 4He gas. In this article, we focus on the results obtained above 1.5 K, in vacuum and gas, and introduce some features observed at lower temperatures. The resonant properties can be quantitatively understood by means of simple models, from the linear regime to a highly non-linear response at strong drives. We demonstrate that the non-linearity is mostly due to the geometry of the vibrators. We also show that in our device the friction mechanisms originate in the metallic layers, and can be fully characterized. The interaction with 4He gas is fit to theory without adjustable parameters.

Affiliated with

Also associated with

No associations

Rating

Silicon Vibrating Wires at Low Temperatures does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Silicon Vibrating Wires at Low Temperatures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Silicon Vibrating Wires at Low Temperatures will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-767687