中国物理B ›› 2024, Vol. 33 ›› Issue (1): 17301-17301.doi: 10.1088/1674-1056/ad09ab

所属专题: Featured Column — INSTRUMENTATION AND MEASUREMENT

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Design and simulation of an accelerometer based on NV center spin—strain coupling

Lu-Min Ji(季鲁敏), Li-Ye Zhao(赵立业), and Yu-Hai Wang(王裕海)   

  1. Key Laboratory of Micro-Inertial Instrument and Advanced Navigation Technology, Ministry of Education, Department of Instrument Science and Engineering, Southeast University, Nanjing 210096, China
  • 收稿日期:2023-09-13 修回日期:2023-10-18 接受日期:2023-11-04 出版日期:2023-12-13 发布日期:2023-12-13
  • 通讯作者: Li-Ye Zhao E-mail:liyezhao@seu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 62071118) and the Primary Research & Development Plan of Jiangsu Province (Grant No. BE2021004-3).

Design and simulation of an accelerometer based on NV center spin—strain coupling

Lu-Min Ji(季鲁敏), Li-Ye Zhao(赵立业), and Yu-Hai Wang(王裕海)   

  1. Key Laboratory of Micro-Inertial Instrument and Advanced Navigation Technology, Ministry of Education, Department of Instrument Science and Engineering, Southeast University, Nanjing 210096, China
  • Received:2023-09-13 Revised:2023-10-18 Accepted:2023-11-04 Online:2023-12-13 Published:2023-12-13
  • Contact: Li-Ye Zhao E-mail:liyezhao@seu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 62071118) and the Primary Research & Development Plan of Jiangsu Province (Grant No. BE2021004-3).

摘要: The nitrogen-vacancy (NV) center quantum systems have emerged as versatile tools in the field of precision measurement 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 simulation, 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\times }{{10}}^{{-5}}~{\rm g}/\sqrt {\rm 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.

关键词: nitrogen-vacancy (NV) accelerometer, spin—strain, diamond

Abstract: The nitrogen-vacancy (NV) center quantum systems have emerged as versatile tools in the field of precision measurement 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 simulation, 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\times }{{10}}^{{-5}}~{\rm g}/\sqrt {\rm 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 words: nitrogen-vacancy (NV) accelerometer, spin—strain, diamond

中图分类号:  (Electronic structure of nanoscale materials and related systems)

  • 73.22.-f
87.80.Ek (Mechanical and micromechanical techniques) 07.10.Cm (Micromechanical devices and systems) 85.85.+j (Micro- and nano-electromechanical systems (MEMS/NEMS) and devices)