37 citations · 94 across the 8 of their papers we have counts for
8 papers
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)…
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…
Comb-drive MEMS Oscillators for Low Temperature Experiments
M. Gonzalez, P. Zheng, E. Garcell +2
We have designed and characterized micro-electro-mechanical systems (MEMS) for applications at low temperatures. The mechanical resonators were fabricated using a surface micromach…
Knudsen-to-Hydrodynamic Crossover in Liquid 3He in a High-Porosity Aerogel
H. Takeuchi, S. Higashitani, K. Nagai +6
We present a combined experimental and theoretical study of the drag force acting on a high porosity aerogel immersed in liquid He and its effect on sound propagation. The dr…
Ultrasound attenuation and a P-B-T phase diagram of superfluid 3He in 98% aerogel
B. H. Moon, N. Masuhara, P. Bhupathi +4
Longitudinal sound attenuation measurements in superfluid 3He in 98% aerogel were conducted at pressures between 14 and 33 bar and in magnetic fields up to 4.44 kG. The temperature…
Magnetic field induced quantum phase transition of the antiferromagnet
S. Nellutla, M. Pati, Y. -J. Jo +11
The magnetic properties of alkali-metal peroxychromate KNaCrO are governed by the pentavalent chromium cation, Cr. Specific heat, magnetocalorimetry, ac ma…
Ultrasound attenuation of superfluid He in aerogel
H. C. Choi, N. Masuhara, B. H. Moon +7
We have performed longitudinal ultrasound (9.5 MHz) attenuation measurements in the B-phase of superfluid He in 98% porosity aerogel down to the zero temperature limit for a wi…
The A-B Transition of Superfluid Helium-3 in Aerogel and the Effect of Anisotropic Scattering
C. L. Vicente, H. C. Choi, J. S. Xia +3
We report the results of high frequency acoustic shear impedance measurement on superfluid helium-3 confined in 98% porosity silica aerogel. Using 8.69 MHz continuous wave excitati…