Nanomechanical Resonators for Cryogenic Research

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2018-12-17
Major/Subject
Mcode
Degree programme
Language
en
Pages
10
Series
Journal of Low Temperature Physics
Abstract
Suspended aluminum nanoelectromechanical resonators have been fabricated, and the manufacturing process is described in this work. Device motion is driven and detected with a magnetomotive method. The resonance response has been measured at 4.2 K temperature in vacuum and low-pressure 4He gas. At low oscillation amplitudes, the resonance response is linear, producing Lorentzian line shapes, and Q values up to 4400 have been achieved. At higher oscillation amplitudes, the devices show nonlinear Duffing-like behavior. The devices are found to be extremely sensitive to pressure in 4He gas. Such device is a promising tool for studying properties of superfluid helium.
Description
Keywords
He, NEMS, Quantized vortices, Sensors
Other note
Citation
Kamppinen , T & Eltsov , V B 2018 , ' Nanomechanical Resonators for Cryogenic Research ' , Journal of Low Temperature Physics . https://doi.org/10.1007/s10909-018-02124-z