Nanoscale detection of faint machinery vibration using the NV center in diamond |
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Institution: | 1. Key Laboratory of Instrumentation Science and Dynamic Measurement, School of Instrument and Electronics, North University of China, Taiyuan 030051, China;2. Osaka Univ., Dept. Appl. Phys., 2-1 Yamadaoka, Suita, Osaka 5650871, Japan |
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Abstract: | We propose a novel method for detection of the faint machinery vibration at the nanometer resolution based on the spin magnetic resonant effect. A suspension magnet acts as a vibration sensor to transfer the vibration signals as the magnetic field fluctuation to excite the spin magnetic resonance. Due to the high sensitivity of the magnetic field of the nitrogen-vacancy center in diamond, the theoretical detection limit of mechanical vibration is as high as 5.7 nm, and the actual measurement resolution reached 12.8 nm, and proved the potential for further improvement to ∼pm resolution. The feasibility of this method is verified by dynamic tests. This method provides a novel approach for the detection of micro-mechanical vibrations. |
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Keywords: | NV center Nanoscale detection Faint machinery vibration Magnetic levitation |
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