- 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)
Modal Decomposition in Goalpost Micro/nano Electro-mechanical Devices
E. Collin · M. Defoort, K.J. Lulla, J. Guidi, S. Dufresnes, H. GodfrinWe have studied the three first symmetric out-of-plane flexural reso- nance modes of a goalpost silicon micro-mechanical device. Measurements have been performed at 4.2 K in vacuum, demonstrating high Qs and good linear prop- erties. Numerical simulations have been realized to fit the resonance frequencies and produce the mode shapes. These mode shapes are complex, since they involve distortions of two coupled orthogonal bars. Nonetheless, analytic expressions have been developed to reproduce these numerical results, with no free parameters. Owing to their generality they are extremely helpful, in particular to identify the pa- rameters which may limit the performances of the device. The overall agreement is very good, and has been verified on our nano-mechanical version of the device.
J. Low Temp. Phys. 175, 424 (2014)
doi: 10.1007/s10909-013-0919-1