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A low-frequency, high-amplitude, torsional oscillator for turbulence studies in quantum fluids

Research output: Contribution to Journal/MagazineJournal article

Article numberarXiv:2201.08503 [cond-mat.other]
<mark>Journal publication date</mark>21/01/2022
Number of pages6
Publication StatusPublished
<mark>Original language</mark>English


We describe a new type of torsional oscillator, suitable for studies of quantum fluids at frequencies of ∼ 100 Hz, but capable of reaching high velocities of up to several cm\,s−1. This requires the oscillator amplitude to exceed 100 μm, which is much too large for a conventional capacitor-driven device. We describe the new geometry for the oscillator, discuss its design, and report our initial tests of its performance.