The Effect of Remnant Vortices in He II on Multiple Modesof a Micro-electromechanical Resonator

A micro-electromechanical plate resonator suspended 2  μ m above a substrate was immersed in 4 He at 14 mK at saturated vapor pressure. At these temperatures, four vibrational modes of the device are observed. The corresponding motion of these modes is identified by comparing the observed modes with...

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Bibliographic Details
Published inJournal of low temperature physics Vol. 196; no. 1-2; pp. 177 - 183
Main Authors Barquist, C. S., Jiang, W. G., Zheng, P., Lee, Y., Chan, H. B.
Format Journal Article
LanguageEnglish
Published New York Springer US 15.07.2019
Springer Nature B.V
Subjects
Characterization and Evaluation of Materials
Computer simulation
Condensed Matter Physics
Low temperature physics
Magnetic Materials
Magnetism
Physics
Physics and Astronomy
Resonators
Substrates
Vapor pressure
Vortices
Quantum turbulence
MEMS
Vortex
He
He II
Superfluid
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Summary:A micro-electromechanical plate resonator suspended 2  μ m above a substrate was immersed in 4 He at 14 mK at saturated vapor pressure. At these temperatures, four vibrational modes of the device are observed. The corresponding motion of these modes is identified by comparing the observed modes with computer simulations. Owing to its large surface area and small mass, the resonator is sensitive to remnant vortices. The behavior of the modes is studied in the presence of remnant vortices and also in the presence of fully developed turbulence generated by a quartz tuning fork.
ISSN:0022-2291
1573-7357
DOI:10.1007/s10909-018-02113-2