Acoustic Laboratory for Nanomechanics
The acoustic lab has an acoustic shielding room designed to minimize noise from millihertz (vibration) to high megahertz (radio frequency) range. A three-level vibration isolation includes the acoustic shielding room, vibration-isolation pit and air-suspended optical table. A helium-3 cryostat hangs from the optical table, allowing a sensitive measurement environment down to 270 millikelvin in a field up to 9 tesla and frequencies up to 10 GHz.
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The figures above and to the right show the top flange of the helium-3 cryostat fitted with high-frequency coaxial lines for measurements up to gigahertz range down to a temperature of 270 mK. Because of vibration noise isolation it is possible to detect the motion of nanomechanical structures which produce a displacement in the sub-picometer range (1.0e-14 m or 0.0001 angstrom). The coaxial lines allow high-frequency and short timescale measurements of the nanomechanical motion down to 40 ps in the time domain. |
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