Slippage and boundary layer probed in an almost-ideal gas by a nano-mechanical oscillator

M. Defoort, K. J. Lulla, T. Crozes +3

We have measured the interaction between ${}^4$He gas at 4.2 K and a high-quality nano-electro-mechanical string device for its first 3 symmetric modes (resonating at 2.2 MHz, 6.…