Selected Publications
- Slippage and Boundary Layer Probed in an Almost Ideal Gas by a Nanomechanical Oscillator
M. Defoort et al., Phys. Rev. Lett. 113, 136101 (2014) - Evidence for the role of normal-state electrons in nanoelectromechanical damping mechanisms at very low temperatures
K.J. Lulla et al., Phys. Rev. Lett. 110, 177206 (2013) - Phase Diagram of the Topological Superfluid 3He Confined in a Nanoscale Slab Geometry
L.V. Levitin et al., Science 340, 841-844 (2013) - Energy and angular momentum balance in wall-bounded quantum turbulence at very low temperatures
J.J. Hosio et al., Nature Commun. 4, 1614 (2013) - Evidence for Helical Nuclear Spin Order in GaAs Quantum Wires
C.P. Scheller et al., Phys. Rev. Lett. 112, 066801 (2013) - Observation of a roton collective mode in a two-dimensional Fermi liquid
H. Godfrin et al., Nature 483, 576 (2012) - The Josephson heat interferometer
F. Giazotto, M.J. Martinez-Perez, Nature 492, 401 (2012)
Electrometric direct I/V converter with wide bandwidth
S. Holt, P. SkybaA principle of operation and electrical characteristics of a high frequency current-to-voltage (I/V) converter are presented. The I/V converter measures the electric current with selectable gains of 105, 104, and 103 V/A in the frequency range from DC to 500 kHz, 1.2 MHz, and 2.4 MHz, respectively. These properties make this I/V converter suitable for wide range of applications such as tuning forks, torsion oscillators, ultrasound transducers measurements, detection of the piezoelectric transducers used in STM techniques, etc., in low temperature physics. The influence of the input impedance of a I/V converter on the precision of alternating current measurements is also discussed.
Rev. Sci. Instr. 83, 064703 (2012)
doi: 10.1063/1.4725526