首页|Design and simulation of an accelerometer based on NV center spin-strain coupling
Design and simulation of an accelerometer based on NV center spin-strain coupling
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The nitrogen-vacancy(NV)center quantum systems have emerged as versatile tools in the field of precision mea-surement because of their high sensitivity in spin state detection and miniaturization potential as solid-state platforms.In this paper,an acceleration sensing scheme based on NV spin-strain coupling is proposed,which can effectively eliminate the influence of the stray noise field introduced by traditional mechanical schemes.Through the finite element simula-tion,it is found that the measurement bandwidth of this ensemble NV spin system ranges from 3 kHz to hundreds of kHz with structure optimization.The required power is at the sub-μW level,corresponding to a noise-limited sensitivity of 6.7 × 10-5 g/√Hz.Compared with other types of accelerometers,this micro-sized diamond sensor proposed here has low power consumption,exquisite sensitivity,and integration potential.This research opens a fresh perspective to realize an accelerometer with appealing comprehensive performance applied in biomechanics and inertial measurement fields.
Key Laboratory of Micro-Inertial Instrument and Advanced Navigation Technology,Ministry of Education,Department of Instrument Science and Engineering,Southeast University,Nanjing 210096,China
National Natural Science Foundation of ChinaPrimary Research & Development Plan of Jiangsu Province
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