Vibrating Microwire Resonators Used as Local Probes of Quantum Turbulence in Superfluid He-4

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10467813" target="_blank" >RIV/00216208:11320/23:10467813 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=6-UCwfUEQw" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=6-UCwfUEQw</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10909-023-02983-1" target="_blank" >10.1007/s10909-023-02983-1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Vibrating Microwire Resonators Used as Local Probes of Quantum Turbulence in Superfluid He-4

Popis výsledku v původním jazyce

We report the use of a 60 mu m thick superconducting NbTi vibrating wire resonator as a local probe of quantum turbulence in superfluid He-4 (He II). Wire resonance is driven via magneto-motive force, exclusively in the laminar hydrodynamic regime. For the detection of quantized vortices, changes in the probe resonant frequency and peak amplitude are measured in reaction to the applied external counterflow. Calibration of the device response is obtained in thermal counterflow in the temperature range from 1.45 to 2.1 K against second sound attenuation data. The main motivation of this work is the development of local probes of quantum turbulence suitable for use in non-homogeneous systems such as flows with spherical or cylindrical symmetry. The frequency response of the devices is described with good accuracy at lower temperatures by considering the balance between viscosity and mutual friction and its effect on the boundary layer. Under the experimental conditions, the fluid-structure interaction cannot be modeled reliably by an effective turbulent viscosity and agrees better with a model of the boundary layer modified by mutual friction. The obtained results may be extended to the interaction of nanoscale devices with sufficiently dense vortex tangles.

Název v anglickém jazyce

Vibrating Microwire Resonators Used as Local Probes of Quantum Turbulence in Superfluid He-4

Popis výsledku anglicky

We report the use of a 60 mu m thick superconducting NbTi vibrating wire resonator as a local probe of quantum turbulence in superfluid He-4 (He II). Wire resonance is driven via magneto-motive force, exclusively in the laminar hydrodynamic regime. For the detection of quantized vortices, changes in the probe resonant frequency and peak amplitude are measured in reaction to the applied external counterflow. Calibration of the device response is obtained in thermal counterflow in the temperature range from 1.45 to 2.1 K against second sound attenuation data. The main motivation of this work is the development of local probes of quantum turbulence suitable for use in non-homogeneous systems such as flows with spherical or cylindrical symmetry. The frequency response of the devices is described with good accuracy at lower temperatures by considering the balance between viscosity and mutual friction and its effect on the boundary layer. Under the experimental conditions, the fluid-structure interaction cannot be modeled reliably by an effective turbulent viscosity and agrees better with a model of the boundary layer modified by mutual friction. The obtained results may be extended to the interaction of nanoscale devices with sufficiently dense vortex tangles.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GJ20-13001Y" target="_blank" >GJ20-13001Y: Kvantová turbulence s nanometrickým rozlišením</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Low Temperature Physics

ISSN

0022-2291

e-ISSN

1573-7357

Svazek periodika

212

Číslo periodika v rámci svazku

5-6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

17

Strana od-do

168-184

Kód UT WoS článku

001025027500001

EID výsledku v databázi Scopus

2-s2.0-85163880578