28 citations · 82 across the 6 of their papers we have counts for
6 papers
Superfluid He-B Surface States in a Confined Geometry Probed by a Microelectromechanical Oscillator
W. G. Jiang, C. S. Barquist, K. Gunther +2
A microelectromechanical oscillator with a 0.73 m gap structure is employed to probe the surface Andreev bound states in superfluid He-B. The surface specularity of the osci…
Determining the source of phase noise: Response of a driven Duffing oscillator to low-frequency damping and resonance frequency fluctuations
C. S. Barquist, W. G. Jiang, K. Gunther +1
We present an analytical calculation of the response of a driven Duffing oscillator to low-frequency fluctuations in the resonance frequency and damping. We find that fluctuations…
Damping of a micro-electromechanical oscillator in turbulent superfluid He: A novel probe of quantized vorticity in the ultra-low temperature regime
C. S. Barquist, W. G. Jiang, K. Gunther +3
We report a comprehensive investigation of the effects of quantum turbulence and quantized vorticity in superfluid He on the motion of a micro-electromechanical systems (MEMS)…
Critical Velocity in the Presence of Surface Bound States in Superfluid He-B
P. Zheng, W. G. Jiang, C. S. Barquist +2
A microelectromechanical oscillator with a gap of 1.25 m was immersed in superfluid He-B and cooled below 250 K at various pressures. Mechanical resonances of its shear m…
Anomalous Damping of a Micro-electro-mechanical Oscillator in Superfluid He-B
P. Zheng, W. G. Jiang, C. S. Barquist +2
The mechanical resonance properties of a micro-electro-mechanical oscillator with a gap of 1.25 m was studied in superfluid He-B at various pressures. The oscillator was dri…
Temperature Dependence of Viscosity in Normal Fluid He Below 800mK Determined by a Micro-electro-mechanical Oscillator
M. Gonzalez, W. G. Jiang, P. Zheng +3
A micro-electro-mechanical system vibrating in its shear mode was used to study the viscosity of normal liquid He from 20mK to 770mK at 3bar, 21bar, and 29bar. The damping coef…