We present measurements of the drag forces on quartz tuning forks oscillating at low
velocities in normal and superfluid 4 He. We have investigated the dissipative drag over a …

Piezoelectric material-based devices have garnered considerable attention from scientists
and engineers due to their unique physical characteristics, resulting in numerous intriguing …

We report on experimental investigations of acoustic emission by quartz tuning forks
resonating at frequencies 32 kHz, 38 kHz, 77 kHz and 100 kHz immersed in cold gaseous 4 …

Since we still lack a theory of classical turbulence, attention has focused on the conceptually
simpler turbulence in quantum fluids. Reaching a better understanding of the quantum case …

Transition from laminar to turbulent states of classical viscous fluids is complex and
incompletely understood. Transition to quantum turbulence (QT), by which we mean the …

We have measured the damping on a quartz tuning fork in the B-phase of superfluid 3 He at
low temperatures, below 0.3 T c. We present extensive measurements of the velocity …

We report measurements of the dissipation in the Superfluid helium high REynold number
von Kármán flow experiment for different forcing conditions. Statistically steady flows are …

We report recent investigations into the transition to turbulence in superfluid He 4, realized
experimentally by measuring the drag forces acting on two custom-made quartz tuning forks …

The paper summarizes important aspects of quantum turbulence that have been studied
successfully with oscillating structures. It describes why some aspects are proving hard to …

We present a unified analysis of the drag forces acting on oscillating bodies submerged in
superfluid helium such as a vibrating wire resonator, tuning forks, a double-paddle oscillator …